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I Built a Split wheel Motorcycle, But will it work?

  • Published on Feb 3, 2023 veröffentlicht
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Comments • 6 840

  • Thomas Pryde
    Thomas Pryde Month ago +1420

    Hey guys, just wanted to say that the reason for the bouncing up and down is due to the change in leverage. Since one of the wheels is further back it has more mechanical advantage over the suspension due to the increased distance of the swingarm

    • weegaz22
      weegaz22 2 days ago

      its also down to the fact the tyre is compressing too much cos there's no air in it, so when the rear most tyre hits the ground it with no weight on it the tyre is a normal shape so theres at least an inch of difference in height as the front most wheel is flat cos its carrying the weight of the rider, hence the bobbing up and down

    • KingCrack
      KingCrack 2 days ago

      no, it"s because the rearest one is higher off the ground, because the arm is not leveled! you need to make the arm levelen, and block the suspension, and VOILA! no bumping!

    • I am Man Hear me Roar
      I am Man Hear me Roar 5 days ago

      Its not the change in leverage since the swingarm isnt straight. The wheels are parallel to each other to the ground. Its because at the point where the tires end the tire compresses. Both tires compress more at the ends of the tire/wheel which brings the whole bike down. You could improve this by only removing 1/4 of each wheel is 1/2 the wheel.

    • Opz
      Opz 9 days ago


    • uonadtehrrocks
      uonadtehrrocks 12 days ago +1

      @Rivit That would probably help higher speeds but thats not what their immediate problem is. The farther back wheel has more leverage on the suspension so the bike sags more than on the front wheels.
      The bicycle that did this was a hard tail

  • Aby Abraham
    Aby Abraham Month ago +120

    In order to completely reduce that bumpiness. Instead of a suspension use a stiff metal. what its doing is that, when the bike runs on the wheel closer to it, the stress the suspension endure is less, but when it runs on the further wheel, the stress or the weight the suspension carries increases. So, the suspension compresses at different rate when each wheel touches the ground, similar to that torque factor that your learned in 8th grade.

    • Josue Aguilar
      Josue Aguilar 7 days ago

      Clip-Share engineers 🤓

    • Alex Gerrits
      Alex Gerrits 11 days ago +1

      Ya know? I wonder if a single complete wheel would stop the bumpiness.

    • uonadtehrrocks
      uonadtehrrocks 22 days ago

      Little suspension for each wheel

    • Soggy Biscotti
      Soggy Biscotti 25 days ago

      @Heratiki its always fun with a bit of a mental exercise in trying to simulate something in your mind to identify the potential problems before they arise

    • Heratiki
      Heratiki 25 days ago

      @Soggy Biscotti Awesome. I love theorizing on stuff like this. Just wish a channel would put that much time into solving a complicated weird issues like this instead of “this didn’t work, let’s just send it”.

  • Angel Santana
    Angel Santana Month ago +193

    The nervous laughs as he was testing it out 😂😂😂

  • Radko Bachvaroff
    Radko Bachvaroff Month ago +43

    Instead of cutting the tires where you want them leave a bit more rubber on each end then bend that piece back so the loss of contact with the ground is more gradual. Also suspension to the end would keep it in contact better. Excellent video

  • Mad Pistol
    Mad Pistol Month ago +15

    Yep, you need to change the suspension geometry so that it has a strut on the back wheel at a minimum. Otherwise, the weight will always be balanced towards the middle wheel, which means there will be a weight shift each time the wheel changes. Cool concept, though!

    • Soggy Biscotti
      Soggy Biscotti 24 days ago +1

      @Hell_Pike at higher speeds the rubber is expanding and flying off.

    • Hell_Pike
      Hell_Pike 24 days ago

      Exactly this, and I'm thinking at higher speeds the centurial forces are going to put different leverage on the swing arm, that problem would also be fixed by strutting the back wheel

    • Soggy Biscotti
      Soggy Biscotti 27 days ago

      needs to be placed between both rear wheels otherwise the center of mass will still primarily be on the front of the rear wheels, causing the middle wheel to compress and leading to the same leveraging issue, albeit to a slightly lesser extent. You got the closest out of anyone in the comments i've seen so far though so gw.
      You actually could make an independent rear suspension version but it would require redistributing the weight and altering the frame and completely changing the suspension geometry etc.

  • Bobmac90
    Bobmac90 Month ago +8

    Just my thoughts are the tire would need to be slightly more than half way in circumference to create a smoother transition from tire to tire. Right now there is a slight gap from the amount removed from the cutting in half portion , you need consider the amount removed from each (even as little as I might be. There still a gap, as well as there is no angle of entrance to help create a smooth transition from tire to tire.
    I think you would need to cut 2 tires part the 180deg point for a better blend. Like maybe 190-200 degs. 🤔
    And maybe some counter weights???

  • ZipKickGo
    ZipKickGo Month ago +3949

    Hey guys, self appointed B&B R&D Engineer here: I think part of the issue is the transition of one tire to the other. Perhaps in the example videos, their design wasn't a precisely half of a wheel but instead 60% (or something) so that both tires would have larger contact with pavement during transition. Right now with tires being 50% there's only the ends of the tire touching pavement and essentially squishing because there isn't the same distribution of weight as say the centre of the half tire compared to the end of a half tire. So perhaps the solution is to make the tire completely solid somehow so it doesn't squish and create a hop; that or a combination of cutting the wheel at 60%. BUT WAIT, there's more, MAYBE the suspension itself is an added obstacle and simply making it a hard tail like a road bicycle would remove the need to work around the suspension.

    • Dennis Becraft
      Dennis Becraft 27 days ago

      I stopped watching at 1:33, came here & read 76 comments to see if anyone mentioned the problem of the constantly alternating effective wheelbase causing trouble during a tight turn. Time to watch it try.

    • Bulelani Nkosi
      Bulelani Nkosi Month ago

      I think you're overcomplicating this. It's just the suspension and the constantly changing leverage point

    • Justin Kerr
      Justin Kerr Month ago

      Yeah, too bad they literally didn't bother to try to figure it out

    • Alexander Torres
      Alexander Torres Month ago

      What your saying and silicone inside the tires! 😅

    • Aquin Manners
      Aquin Manners Month ago

      @Kevin stoneburner incorrect because the idea is to always have only one half facing directly downward

  • Don
    Don Month ago +30

    You guys must be fun 😊 to work with. I like how you come up with your ideas on this bike, it's so freaking outside the box 🎁. I hope you don't change, this world needs more people like you guys. Your like the Nickolai Tesla of the

    • The Nasty Patty
      The Nasty Patty Month ago

      They got to him 😞

    • I'm Still Jay
      I'm Still Jay Month ago +6

      Don't you dare compare these to the genius that IS Nikola Tesla !
      You should be ashamed of yourself.

  • Simple & Clean
    Simple & Clean Month ago +8

    The design looks like it would be applicable on off road and snow sections if it can switch itself from the street mode. Can't wait to see what future technology we can come up with.

  • the wolf studio
    the wolf studio Month ago +7

    19:20 Note for why it's bouncing: Due to one wheel being further back and there only being two wheels it has a sorta situation like a lever, especially noteworthy due to the curvature of the earth making it more notable because the closer tire will be higher up, pushing up against the ground.

    • ZNineBiggs
      ZNineBiggs 21 day ago

      The earths flat bro, "Curvature" What an amateur

    • Egerit
      Egerit 29 days ago

      I don't think the curvature of the Earth really matters here

  • Giovanni Pacheco
    Giovanni Pacheco Month ago +1

    The bumpiness is definitely due to the suspension, and if you gonna strengthen it to make the Wheels more stable on the bike's frame so it doesn't bumb that much, you should keep in mind that the 3 wheels HAVE to be aligned in a perfect line, otherwise the half wheels will rotate with different heights from the floor, hammering it every transition between the halfs

    • Giovanni Pacheco
      Giovanni Pacheco Month ago

      I don't actually know much about motorcycle, but i think some, or most have suspension on the front wheel as well, the distortion of the springs can be missaligning the wheels considering that both front and back wheel's height impacts on the tilt of the barr that hold the two half wheels

  • diskartihan natin2
    diskartihan natin2 Month ago +4

    Now that is called reinventing the wheel, of course half circle is unstable when turning high speed, you should put a weight balancer to those half wheels to avoid or even minimize the bumpy ride, don't give up, good luck to you guys, hope one day you might perfect those wheel concept.

  • Bruno Herrera
    Bruno Herrera Month ago +411

    the suspension is engineered for a specific swing arm length, when you transition to the half wheel in the farthest back the swing arm is basically longer and the lever effect on the suspension is greater, so it compresses more and so on.

    • Hell_Pike
      Hell_Pike 24 days ago

      @Curtis Johnson or maybe anchor the back of the swing arm and leave it anchored at the front too

    • Justin Schmidt
      Justin Schmidt Month ago

      And that my friends... is Science.

    • brad collins
      brad collins Month ago

      Swingarm extension needs to be able to move independently from swingarm

    • Pete Uncle
      Pete Uncle Month ago +1

      Well said, came here to say this, but probably would not have been as well said 😁

    • Allurade
      Allurade Month ago +1

      Thank you for putting my thoughts into words that made sense. I was also thinking the lack of tire under the back of the bike means more weight is supported by the suspension rather than the wheel, enhancing the lever effect.

  • Alex Bruski
    Alex Bruski Month ago +1

    Instead of strapping the suspension down in the back, you need to install a solid strut to keep all three tires running on a flat plane. With the change in wheel base length, you are changing the leverage that your weight has on the shock, so it changes height with each half rotation of the tires. If you remove the shock motion, you will also remove the up down motion. Just weld in a solid vertical riser on both sides where you had the ratchet straps before. If your riser is too short or too long, you will still have a bumpy ride. If you get it the right length, the ride should smooth out.

  • Laz Reyes
    Laz Reyes Month ago +4

    The pivot point of the arm puts a load on the closer to pivot point wheel. Try lifting the rear about an inch so when you sit on the bike the weight distributes a bit more even on the tires but bumps will still be causing this hop problem
    Maybe like a dual axle trailer. An equalizer arm in between the wheels would balance out even through bumps
    I’m sure that’ll be another cool idea for another video
    Looking forward to more 💪🏼

  • Zach Welch
    Zach Welch Month ago +2

    I don't think the bumpiness is due to the weight change. You have square cuts on each end. Taper the cuts back at an angle and see if that helps. It'll be a smoother transition to the next tire

  • Paing Htoo
    Paing Htoo Month ago +2

    For bouncing issue, I think the first shortcut is to try adjusting tire pressures of each half to be different where the combo absorb most bouncing components until certain satisfactory level 😀
    May be the front-half should have lesser pressure than the rear-half.

    • Paing Htoo
      Paing Htoo Month ago

      ​​Dahmar ohh yeah, I missed the huge point.. ha hahh..
      May be different hardness materials for each will do, but that's not the good shortcut.
      Now I look closely again. I think the worst bouncing happen is not on either individual half. The highest point is where the transition; while edges of both half together touch the road. Not sure why it actually happen 🤔

  • Coach Luke
    Coach Luke 27 days ago +4

    Think about leverage and lever length. As others have suggested, you'll need to change the suspension geometry, otherwise every time the weight transfers to the wheel with greater lever length, greater force is applied to the suspension and the swingarm will compress due to the shift in leverage.

  • Bob Eyes
    Bob Eyes Month ago +553

    The suspension will compress more when the weight is being suspended on the different axles. It's like holding a weight close to your body and then trying to hold the same weight at arm's length.
    The only fix that springs to my mind is to in some way have the 2 rear wheels have independent suspension. That way, you can adjust each to compensate for the differing load.

    • Pierson Sherley
      Pierson Sherley Month ago

      Yup, hence why it was bouncing up and down

    • Ziedmac
      Ziedmac Month ago

      honestly just having a hardtail and making it suspension less makes a lot more sense

      MAGGOT VOMIT Month ago +1

      The only way to fix it is.........to never ever try this again.

    • LPL_fanboy
      LPL_fanboy Month ago

      @Daniel Klopp thanks professor. I’ve always pronounced it wrong … thus the source of the spelling error. But you found the flaw!

    • Daniel Klopp
      Daniel Klopp Month ago

      @LPL_fanboy how is getting the rear of the bike wet going to help??? 😉 The correct term is "damping", NOT "dampening" (dampening is getting something moist; damping is slowing spring compression or rebound). Also, damping has nothing to do with spring rate (i.e. the real source of the problem is a change in the effective rear spring rate as the wheelbase changes).

  • Mark O Matic D
    Mark O Matic D Month ago +1

    If you actually wanted that to work, you could mount the drive sprocket between the 2 wheel halves. Would require a lot more framing, of course. That would greatly reduce the leverage arm offset.

  • PHNX256
    PHNX256 29 days ago +1

    I wanna see what would happen if you made it have three wheels beside one another, the outer two being in sync, the others the other way around.
    I think it'd be a weird mindfuck to see how the brain would treat something that rapidly swaps between a trike and a bike

  • the1darkcorner
    the1darkcorner Month ago +1

    A simple fix would be to angle the new bar attaching the second tire slightly towards the ground. Thus the increase force created by the longer swing arm when the second tire hits is counter acted with reduced height from the pavement. Would need to be angled differently for each people of differing weights.
    Great video. Hope my explanation made sense. Though I'm sure someone has already mentioned it and better, in the 6k plus comments!

    DEADALREADY Month ago +1

    The bump looks to be happening when the wheels swap contact, I’ll bet the bump is from the 2 end cuts being different heights. If you could make the ends of the tires more of a tapered entry instead of a blunt cut that may help with the bumping.

  • J G
    J G Month ago +1

    The suspension is designed to work with the first tire so when it switches to the second one the pressure is further out thus dropping its weight and center off gravity is different

  • Joshua LaTour
    Joshua LaTour Month ago +444

    This was amazing! The bumpiness is due to the two wheels exert different leverages on the swingarm due to different distances from the fulcrum (point of rotation). Thus the spring compresses more when the weight of the bike is on the wheel that is farther away from the fulcrum, and less when the weight is on the closer wheel.

    • John F
      John F Month ago

      It also looked like the angle of the extension arm wasn't parallel to the original section.. it sort of angled down then made a slight turn to become level with the ground. I believe that would mitigate a bit of the springs compression as the extra travel would be compensated by having the arm further down away from the bike..

    • Mike Smith
      Mike Smith Month ago

      ​@AwesomeMcAwesome no, that didn't solve the fulcrum problem it only made the springs absorb and react less. If the wheels were on the same axis; it would fix part of the issue. If they stayed level with each other and used a different suspentsion then 1 wheel wouldn't be lifting the bike as it takes the load.

    • MJPilote
      MJPilote Month ago

      @Fritsified True that, was late when i was typing. But anyway the forces acting on the swing arm needs to be balanced equal from the both tires. Too early to do kinematics simulation I have not had my coffee yeat.

    • Repent and believe in Jesus Christ
      Repent and believe in Jesus Christ Month ago

      Repent to Jesus Christ “For the Spirit God gave us does not make us timid, but gives us power, love and self-discipline.”
      ‭‭2 Timothy‬ ‭1‬:‭7‬ ‭NIV‬‬

    • AwesomeMcAwesome
      AwesomeMcAwesome Month ago

      They used tank straps to bypass the suspension, so its not that.

  • Brad Obert
    Brad Obert Month ago +1

    I believe this would have been better to have a hard tail suspension on the rear. The leverage the second wheel has is much greater, therefore the bike wants to squat a little more while the second tire is touching ground. Then of course pops back up with the original tire touching the ground. I bet it's a ton better with rigid rear suspension. Let me know when you throw another 5-10 grand of your time at my suggestion. lol

  • Gerry Lewis
    Gerry Lewis Month ago +5

    Lots of fun watching you guys! Got my laughs in. Like other's commented, I think 60% tires would be better and maybe some way to make them solid rubber tires.

  • Pillbox Gaming
    Pillbox Gaming Month ago +1

    I think you need to raise the center wheel up a bit and extend the front wheel some to get rid of the bounce motion. The person's weight in the middle is affecting the center tire hitting the ground from the suspension.

  • Dominic Dymond
    Dominic Dymond Month ago +2

    I feel like it needs extra heavy suspension on the rear tire and the ability to pivot. Also maybe fold the inner tube in half or thirds and inflate it? Also what if you slightly oversize each tire/rim to a bit more than half then rivet the ends of the tread to the rim so they aren't wide open and they taper down then if you inflate something inside it won't burst out the ends

  • Dave J Barnett
    Dave J Barnett Month ago +5

    Have you considered adding weight on the other side of each tire to balance it? Right now you have two off-set wheels throwing torque all around and definitely adding to your shake issue.

    • xX_6h05t_Xx
      xX_6h05t_Xx Month ago

      nah i don't think it works like that. my guess would be because of the suspensions, was reading some comments and saw someone says there were 2 different leverages, i think it's because of the further wheel not being close made the bike and rider heavier rather than the wheel closer thus makes the bike bounce when moving ( does that makes sense? ), it didn't make some bounce action on the bicycle video because it had none.

  • BSB.521
    BSB.521 Month ago +32

    I think you guys achieved making a motorcycle feel like you're riding a horse again.

  • mehmet baki
    mehmet baki Month ago +1

    here is an idea about how to solve bumping issue. There are two issues that I noticed. Leverage diffrence between both parts of the wheel and no overlapping.
    First you need to extend the swing arm furher but do not change distance between both parts of the back wheel, move the front part of the back wheel further back instead that way leverage diffrence between two parts of the wheel relative to front one will be significantly less.
    Then instead of cutting the wheels in half and having 1 whole wheel in total you'll need to cut out only 45% of the wheel so you can have two 55% wheel and one 110% of a wheel in total. That way having something extra on each half of the wheel you'll elimininate the possibility of that back wheel losing ground contact ever. even a split second loss of ground contact will result in significant bumping issue.

  • FattyMateo
    FattyMateo Month ago +2

    There is 🅾️ reason this should have worked so well. Looked super cool

  • Jomy
    Jomy 19 days ago +1

    Wow! What amazed me the most was how you guys stayed kool and had fun through all the innovation!

  • Paul Eaton
    Paul Eaton Month ago

    It's bouncing due to the back back wheel being a little lower than the back wheel. The middle wheel needed to be slightly higher then the very back wheel to compensate for the dip (missing piece) of the wheel.

  • Matthew Szymborski
    Matthew Szymborski Month ago +5

    You mentioned wheelbase will constantly be changing, well there's the problem when you consider leverage. The swingarm is essentially a lever on the shock, so when you increase the length of the lever you change the amount of force on the spring. I bet if it was rigid (no shock) then it would ride "smooth" at least on a nice surface.

  • Joseph Manalo
    Joseph Manalo Month ago +169

    Not a physics major, but I think the added length of the arm going to the backmost tire is increasing the overall torque applied to the suspension. So as it switches it compresses more

    • supersportimpalass
      supersportimpalass Month ago


    • J Drizzle
      J Drizzle Month ago

      Agree! Combo of factors but what’s going to fix it? Wonder what lowering straps on the front would do?

    • Michigan Woodsman
      Michigan Woodsman Month ago

      @Anthony Rowell 100% agree.
      Some taper on the ends of the tread would be helpful as well.

    • Michigan Woodsman
      Michigan Woodsman Month ago

      @J Drizzle was it right, or wrong? It's not working, so something is off. I'm thinking it's multiple issues working together rather than a single point issue. I'm not a physics major, but I am a mechanical engineer.
      And I'm not claiming that I know everything or anything here, I can only speculate on what the footage shows and an educated guess. Just like everyone else.
      The purpose is to find a solution through all of us having a discussion about what we think. Arguing is fun, but non productive.
      Let's see what happens.

    • Anthony Rowell
      Anthony Rowell Month ago

      The weight sitting on the trailing edge of the front drive tire is deforming it. When the leading edge of the rear drive wheel comes in contact with the ground there is no weight(load) on it, making it taller the the trailing edge of the front drive wheel. The tires have to be stiffer or more than 1/2 the circumference so you have overlap where both tires are on the ground at the same time(momentarily)

  • Brett Hale
    Brett Hale Month ago

    I would say the rough ride is due to the increase in leverage every Time the wheel base increases. So you need to lock the suspension out.

  • Brian Wright
    Brian Wright Month ago +3

    I love this stuff, thanks for making all of this content. I don't have a bike but I really really want one. Keep up all the things you are doing and ignore the critics! Thank you.

  • Julius Fučík
    Julius Fučík Month ago

    To counter the bumpiness you want the torque from both halves to be the same. But that would require differently sized halves.

  • Grey
    Grey Month ago +2

    My father asked me what I'm watching and after showing him the thumbnail he said "Why in the hell would they do that to a functioning bike?" I laughed and replied because they are making entertaining content?😂.... that's the honestly best and only answer I could come up with.

  • Shavey
    Shavey 20 days ago

    Love these types of videos. Would the ride be more comfortable if the second chain was under more tension?

  • Victer Christensen
    Victer Christensen Month ago +88

    You get more leverage to compress the spring when it's riding on the rear wheel, kinda like when you're closing pliers, then it's easier to do when you're clamping on the end of the handle.
    You could get rid of most of it by simply just riding without a spring and welding the whole thing so it doesn't have any suspension travel, or you could stiffen the spring.
    Also, as another commenter said, you should have 55-60% of the tire left, so you get a smoother transition.

    • Jon Bear
      Jon Bear Month ago +1

      That's exactly what I am thinking too.

    • Victer Christensen
      Victer Christensen Month ago

      @DeepCarrot 6859 The 55% was just to get a smoother transition in general and not for the spring compression thing

    • DeepCarrot 6859
      DeepCarrot 6859 Month ago +1

      100% correct, torque is a matter of force multiplied by distance, the further away the centre of the wheel is from the spring (rear-rear wheel is further than rear-front wheel) it will increase the amount of torque the being applying to the shock mount, therefor compressing the spring more on the rear wheel causing that bump effect.
      the only way to completely eliminate this effect is by not cutting the wheels in half (no point in the video), welding/removing the shock (resulting in a bad ride) or have a hydraulic spring, changing the compression force to suit the torque each wheel is producing to the spring (extremely complicated - if its even possible)
      if you were to have 55-60% of the wheel, it will make the torque transition smoother (correct again) but it will still have the same peak applied torque when there is just 1 wheel on the ground, which will only be noticeable at low speeds. at higher speeds, the slight extra length in circumference will become negligible

    • Matthew Hynes
      Matthew Hynes Month ago +2

      spot on man. I was thinking you put it on a chopper since they don't have suspension usually anyways. I didn't think of the 55-60% of the tire left, but that would probably help a lot too

    BAD IDEAS Month ago

    I like the galloping! Try using 60-75% tires and mount the rear tire lower on the swing arm to fight the leverage on the suspension

  • NJ MXJunkie
    NJ MXJunkie Month ago +35

    I think we made
    The perfect motorcycle”….. Craig-“yeah it’s almost
    Riding a shake weight” I laughed so hard I woke my wife up and got yelled at

    • Jay Hill
      Jay Hill Month ago +1

      I’m here in the comments to distract myself from the exact same situation happening at the same comment!

  • Diego Romero
    Diego Romero Month ago

    It looks like a pretty fool idea, time to watch it haha, if you don't want your motorcycle to bounce you should move the suspension so leverage keeps to be the same for any of the half wheels

  • Case Cooper
    Case Cooper Month ago +1

    Keep the shenanigans coming! Love y’all!! Never disappoint

  • Ayylien Slav
    Ayylien Slav 6 days ago

    Would cut the tires at 190 degress instead of 180 so you are not left with a end that pancakes every time weight is distributed and the overlap might help transition the wheels better so you don't have a bumpy ride. I think also reinforcing the wheel with a metal bar across the open end would help with forces.

  • Jonathan Anderson
    Jonathan Anderson Month ago +75

    You should be able to fix the bouncing by welding a support trust the the frame under the seat. The back wheel is twice the distance from the shock so it has twice the leverage and need half the force to compress your suspension

    • Jonathon Robinson
      Jonathon Robinson Month ago

      they also need to add a chain tensioner

    • Two Tone
      Two Tone Month ago

      @ShroomiestShroom Going hardtail is the fix. Yup!

    • adrian balint
      adrian balint Month ago

      i was thinking the same thing. i could not understand how they could not figure it out. it took me just couple of seconds.

    • Mayo
      Mayo Month ago

      Everyone here sounds so smart 😂

    • rich nickelson
      rich nickelson Month ago +2

      That's what I was thinking when the suspension compresses it lightens the load on the farthest wheel! Putting that long arm up in the air sort of? All-in-all at least it was! LOL
      Kind of surprising?

  • Qui9
    Qui9 Month ago

    Since the bicycle, I've been thinking that each wheel half looks like a long foot...
    You know where I'm going with this. Let's have 8-12 wheels each with a shoe, synchronized to either step from front to rear, or from rear to front, tried both ways 😁

  • Dizzlaeus
    Dizzlaeus Month ago +2

    Love the video. Really appreciate the moment of Faith, we need more of this in America, and on Clip-Share.

  • segfault
    segfault Month ago

    Absolutely incredible. Outstanding work.

  • Triveni Baviskar
    Triveni Baviskar Month ago

    I think Each wheel arc can be extended or elongated to overcome the bouncing effect.

  • Eduard Dvorecký
    Eduard Dvorecký Month ago

    I think if you replaced rear suspension with solid rod and moved rear rear tire lower few degrees it would improve the ride

  • Leon Caples
    Leon Caples Month ago +178

    This man's actually going for a world record first!
    Without Guinness!

    • Synikal
      Synikal Month ago

      @Mark holroyde They'll certify anything if you're the first to do it, and you pay them enough money

    • Angel  Adramelech
      Angel Adramelech  Month ago +1

      Need more than Guinness to get me on that for real...

  • thecrowrains
    thecrowrains Month ago

    You folks are awesome! Amazing craftsmanship

  • Lucas Pehkonen
    Lucas Pehkonen Month ago

    The suspention is in a leverage changing alot between the tiers. Would need to be in the middle of the wheels to cancel it out. So if you don't redesign it a stiff suspension would be preferable to a not working one.

  • lloydieization
    lloydieization Month ago

    Apart from the levering issues that others have mentioned, each part (half) of the wheel would need to have a "circumference" of more than an 50% if you want phase alignment/overlap (if you look at it like a sine wave) ... basically due to the abrupt wheel cut and the added friction (ploughing in to the tarmac on each half rotation) their is a now dead spot in the "wave" (I guess a loss of angular momentum etc...).... even if these issues could be resolved, you've now got the issues of a massive table saw on the road and any rock big enough that it can fit in between "wave trough" is probably going to wreak havoc...

  • Falsto Rosa
    Falsto Rosa Month ago +1

    I wonder how would the ride be with the two rear tires intact? It would look pretty cool.

  • Hildert Groenenberg
    Hildert Groenenberg 29 days ago

    Up-n-down is because the most-rear wheel has more leverage on the suspension. And above on that it influences the weight on the front too, it's further away from the centre-of-gravity.

  • Akladdsel
    Akladdsel Month ago +140

    I think the reason for the bumpyness is that because of the leverage from the extended controll arm. So if you move the suspension to in between the rear tires it should get a little better, but i think the best solution is just to remove the rear suspension, it would be a harsh ride but

    • Philip Smi-Le Nguyen
      Philip Smi-Le Nguyen Month ago

      To make both the halves of the back wheel atleast 60-70% of a circle, so that when 1 transitions to the other it'll be smooth n won't make it go up n down.

    • TheRich
      TheRich Month ago

      Agree 100 percent. The change in leverage when transitioning between the two tires is causing the suspension load to oscillate. A hardtail would be the easiest fix.

    • Ad McPrice
      Ad McPrice Month ago

      I agree, I see it like lever, the back wheel is further away from the pivot (fulcrum) point than the front tire. The weight of the bike and rider would cause different moment of torque that would oscillate between the two tires.
      Think of it like a cheater bar on an wrench to get even more toque.
      I think both the front and rear suspension would have to be taken out

    • Midnight
      Midnight Month ago

      This is exactly the problem. Either re mounting the suspension to the center between the rear wheels... or use a strut that is designed to handle the weight of an extended swing arm... like what drag racing bikes use.

    • Sebastian Erasmus
      Sebastian Erasmus Month ago

      That is exactly what I was thinking, he's essentially Constantly driving up stairs with only the rear wheel

  • Deuce Deuce
    Deuce Deuce Month ago

    It's bumping because the distance between the rear tire keeps changing, because it switches from the rear tire to the rear rear tire, which causes the suspension to adjust over and over again. If you got rid of the suspension and made the rear solid, then I think it would go away. (The leverage against the rear suspension).

  • Grant Ellis
    Grant Ellis Month ago

    I think if you had 2 separate cut in half wheels that are cut the exact same way it would be great

  • Cafe Racer Honda 70

    Waiting for part 2 😍🔥🔥🔥

  • Mojo Neko
    Mojo Neko Month ago

    Fill the inner tubes/tires with Flex Seal or a mix of Flex Seal and the rubber mulch. Stick them in the hot sun for a couple of days to cure. This should give you an old school solid rubber tire. I also think the rim/tire "halves" need to be greater than 50% of the tires circumference as well for a smoother transition. Thanks for the video!

  • Potta Coola
    Potta Coola Month ago

    The bumping is because of the length of the swing arm, the inner wheel is putting on a small load or normal load on the suspension but because the outer wheel is further away it will put more load on because it has more leverage. If the outer wheel was further away it will sag even more.

  • J J
    J J Month ago +39

    i think the bouncing in the suspension is from the difference in leverage on the back tire from the axel from that of the front half tire

    • Anthony Rowell
      Anthony Rowell Month ago +1

      The trailing edge of the front drive tire is collapsing, while the rear tire comes around with no weight on it making it taller than the other tire when it contacts the ground. They need stiffer tires or possibly there has to be a time of overlap where both tires are in contact with the ground, to get rid of the weird weight transfer

    • Michael Miller
      Michael Miller Month ago

      I believe your right the rear axle needs lowered a little

  • Nathan Carrier
    Nathan Carrier 28 days ago

    The third wheel has more leverage on the suspension, which is why it goes up and down.

  • killabee422
    killabee422 Month ago

    Thats awesome, try to put the back wheel at a slight down angle to help even the weight transfer more evenly

  • Mango Bango
    Mango Bango Month ago

    hey im no physics major myself but the bumping seemed to be coming from how much weight was on the 1st rear wheel then transferring the weight to the (furthest)2nd rear wheel. You needed a better shock system or move the whole seat and handlebars back so the weight is more centered.

  • Andy Schrack
    Andy Schrack Month ago

    The Bicycle guy ended up using three wheels. I agree that you should use at least 60% of the total wheel circumference as well, maybe more. The tires need to stay as rigid as they would when normally inflated. How do you do that?

  • Ravi Ranjan
    Ravi Ranjan Month ago

    Hey, i was knowing that the bouncing problem is going to be happen but i thought you will fix until the end. according to my view, you guys need to put the last tyre axle slightly up to the starting rear tyre. i can't actually tell the measurement but you can test it my keeping the last tyre axle upward by testing the rod connecting both rear axles, as i can see there is a connection between both the axles, so you can fix it...

  • dave122288
    dave122288 Month ago +102

    2 possible fixes. 1) Hard tail. 2) Need to move the spring. There will be a spot on the swing arm where the weight of the unloaded tire will balance the leverage difference of the loaded tire which is where the spring needs to be attached. You may have to also counter balance the wheels too but they balance each other out. It's too early for me to work that physics out lol

    • Invincibletro
      Invincibletro Month ago

      @dave122288 ...but counterweights would have to move back and forth at the same rate the leverage changes... If I was the lead engineer, and was told to make this tire combination work, keeping cost and weight in mind, I would; 1) 4 link the two tires on the same plane. 2) Figure out the angle of attack for that plane based on terrain intended. 3) Provide appropriate suspension... The oscillating force is equivalent to the rotation speed of the rear tires, vs speed, vs load, forever changing. This is where infinite (∞) is used in math calculations.

    • Invincibletro
      Invincibletro Month ago

      @Benny Rest I think I see where you are going. I like your thought process. Think of handles on a wheelbarrow. You can bend the handles any way you want but if you are still the same distance from the fulcrum, nothing changes. In the bike scenario, it would be like holding the wheelbarrow handles at their ends then moving to the rear of the tub. Switching back and forth instantly without a smooth transition in between. Significant weight changes.

    • dave122288
      dave122288 Month ago

      @Invincibletro Yes. The oscillating force is much smaller than the force from the difference in leverage the 2 tires apply at the moment though. It may be small enough to just live with for what it is or tune down enough with a damper. If not counterweights would not be difficult and would solve that problem

    • Benny Rest
      Benny Rest Month ago

      I thought changing the angle of the rear wheel might help

    • Invincibletro
      Invincibletro Month ago +1

      @Benny Rest When the wheels are like this ( ) this is the exact moment the length of the lever changes, When they are ( ) the lever is the distance between the closest axel and the pivot. What you might be seeing is the A arm angle does change immediately when this transfer happens, lowering the closest axel, or raising it instantly between the transfer between the two levers.

  • Grass Roots
    Grass Roots Month ago

    Nicely done. This was a fun video to watch. Nice quote out of James and a nice touch. The "KTM" vacuum comment was the funniest thing I've heard this year. I'm totally gonna steal that...make some stencils and spray my shop vacs with the Dodge logo: if they work, they suck. God bless.

  • JJ Dees
    JJ Dees 26 days ago

    The tires should be cut 2" off center of 2 different tires using the longer pieces not 1 tire cut in half for starters then swing arm adjusted to perfectly level tires with both tires on the ground before offsetting them away from each other. That will take the bounce away and feel like one tire. Myself and a friend tried this 35+ yrs ago and made the same mistake with a 10spd bike before getting it right. We also removed the valve stem to solid fill the tires ( forget what the stuff was called but used in tractor tires and cured like solid rubber) before cutting them. Worked great felt normal like 1 tire!!!


    It's bouncing, because the split tires are of two different ( EXPANDED LEVELS ) With a normal one piece tire and rim combo... The air pressure is the same all the way around, being two separate 60 / 60 or however you split it ... One tire is compressed more then the other 👍🏼... So... That's why the bike was bouncing 👍🏼... Pretty much the same as a tire separating and getting a blister on the tire, it bounces 😀


      @Bikes and Beards And I WILL tune in 😍... You guys are awesome... I grew up in body shops... Worked for a few VERY ELITE high-end car collectors as well... On the level of J- Leno and Jerry Seinfeld 👍🏼... One collection had 6 1926 Franklyn's alone... And one of the only fully restored 1920s Big red Cadillacs ... He had a total of 200 plus cars,trucks and bikes

    • Bikes and Beards
      Bikes and Beards  Month ago

      We will rebuild

  • CDR.DarthDraculitus

    Another problem you will run into at higher speeds is the individual wheels are no longer balanced and will vibrate the bike into basically exploding if you go too fast

  • Mikey Ritz
    Mikey Ritz Month ago +117

    I absolutely love these guys. Not only are they entertaining as hell, but they truly are good people and always send positive energy through their videos. I’m a Hugeee fan, and I just have to meet these guys someday. 💯👍🏼👍🏼🔥

    • Fitz
      Fitz Month ago

      @Bigballmagrawl09 lol ok sarcasm I like

    • Bigballmagrawl09
      Bigballmagrawl09 Month ago

      @mlongstudio lol I was just being silly I don't think they'd really care

    • Fitz
      Fitz Month ago

      @Mikey Ritz Satans temple aren’t devil worshippers, and I don’t have anything to do with them anyway. But since people were going to bring stupid beliefs into the conversation as a requirement for being a better person, and apparently better at mechanical skills… well why not invite everyone.?

    • Mikey Ritz
      Mikey Ritz Month ago

      @Fitz so what are you some kind of devil worshiper ?

    • Fitz
      Fitz Month ago

      @Mikey Ritz satans temple mechanics are also really talented.

  • John Worthington
    John Worthington Month ago

    I would like to mention that the structural integrity of the tires are more compromised at every end of the half cut wheels. I think that even though they share the same load the way to to solve that would be to add a hard rubber like block or seal as a cap to each end of the half wheels. (Can be two inches can be 3-4 inches solid. Just something help take on the tire walls structural compression.) To allow as overcompensation for higher tire compression at the edge of each cut.

  • Estevão Costa
    Estevão Costa Month ago +1

    I am 23 years old, have been on the internet since i was 8 - 10, throughout this time there have been very few occasions where i watched a full video.. Watching more than one video of the same channel ? Even fewer, this is the first channel in ages that i can't help but watch more of its content, THATS HOW FUCKIN GOOD YOU GUYS ARE

  • Tota Tona
    Tota Tona Month ago +1

    You can simply place a tube tyre in that tyre. Cover both side of half cut tyre opening with strong rubber pieces. From valve in rim you can fill air in tube tyre.

  • Xavier Ramos
    Xavier Ramos Month ago

    I'm pretty sure it's bumpy because of the edges of the tires are not reinforced, when all the weight is on one edge of the tire it squishes, I would recommend like a steel ring inside of all of the open ends of the tires. also maybe fill the tires with some high density liquid setting foam vs rubber bits.

  • Xan Ostler
    Xan Ostler Month ago

    Can you cut reliefs on the edges of the tires so that the leading edge you created isn’t as sharp? Would that help with the ride comfort?

  • Allen Carlson
    Allen Carlson Month ago +162

    Use 60% (as others said) and the hardest solid tires you can find (like indoor forklift tires), your bumpyness will diminish some.
    It's bouncing because of the different leverage the different lengths of swingarm have on the spring as the weight changes from tire to tire. The weight of the wheels is also changing back and forth between sprung and unsprung weight at different points on the swingarm/lever. Also..., the front tire becomes additional weight while off the ground but the rear becomes a counter weight while off the ground. In other words the weight felt by the spring is changing.

    • Patrick Smith
      Patrick Smith Month ago

      Let me have that bike 😂

    • TheUKDave
      TheUKDave Month ago

      @Michael Scheck I suspect it's not even as simple as making the front one smaller, as the transition from one to the other would still make a bump. I suspect the front wheel could be made a slightly different shape to a semicircle ... perhaps a parabola (or simlar) such that the transition size still matches, but it doesn't heave as much in the middle of the front wheel ¯\_(ツ)_/¯

    • Connor Jones
      Connor Jones Month ago

      @ChampagneInMeGoldenGrahams would be even more impractical, but you could do 2 wheels in parallel, and counterweight the removed section of each wheel kinda like a crankshaft.
      If the wheels are parallel, you could even just rivet some cut half tires like they did and not cut the wheels, then add wheel weights to the empty side of the wheels to balance them properly. Wouldn’t have half wheels anymore, but still have half tires, and that’s kinda the point of the exercise anyway.

    • Michael Scheck
      Michael Scheck Month ago

      @TheUKDave Yes ... I believe you can fix this by making one of the rear half-wheels a larger or smaller (original) diameter than the other...as to how much and which one...???? Havn't thought enough about it yet...LOL

    • ChampagneInMeGoldenGrahams
      ChampagneInMeGoldenGrahams Month ago +3

      I should have read further before adding my comment, as you have already covered the idea. Running the tires side by side would be the only way to possibly completely eliminate the gallop. Even adding hard tires wouldn't kill it completely in it's current state as the different lengths of the armature where the wheels are attaches would react different to the centrifugal force created by the off balanced wheels. Even side by side this could be problematic since the wheels would be attached to a perpendicular axle that would cause wag instead of a gallop. The only way to make it efficient to any usable speed (for a practical lifetime for a motorcycle) would be to add a third parallel wheel and weight the rims with enough precision to stabilize the centrifugal force between the three.

  • Steve Adams
    Steve Adams Month ago

    It's hopping because each time it switches wheels it changes the geometry on the spring and shock. (Think; leverage) Replace the rear shock with something to basically make it a hardtail and I think you'll be surprised. 😎

  • Logan Ward
    Logan Ward Month ago

    I think when the weight transfers to the rear tire the swing arm has more leverage and compresses the suspension and when the front tire comes around it hits the ground hard because the suspension is compressed. I think solid suspension may be the solution

  • Paing Htoo
    Paing Htoo Month ago

    Awesome !
    Though it looks stupid at its first look, future iterations of this idea may lead to a certain level of behavior like slip differential rear wheels of the car.
    Because it takes traction at two different points alternatively, when you cross into deep mud, you get two traction points, of one half may be on harder solid ground while the other half dip slipping in mud.
    Futher more, being not a complete circle wheel can get not only traction but a significant normal push at its cut edges to easier get out from heavily slippery mud condition.
    So interesting idea for trail and offroad option 😯

  • David Brown
    David Brown Month ago

    Try to cut like 1/3 of the tire out instead of half so there’s some extra tire to roll off at the half way point that might help the bumpiness of it

  • R/C E/V
    R/C E/V Month ago

    the wheels werent at even height i think, this should be much easier with a rigid chassis where you can perfectly line up the wheels horizontally.

  • H2Oes Mad
    H2Oes Mad Month ago +139

    Yeah if anything was deserving of the "do not try at home" title this is definitely a winner! (It's much more fun to do it at work anyways ;) ) Didn't expect it to be able to start galloping like a horse LOL

    • Perrin Weber
      Perrin Weber Month ago

      @The Vibe Been there, done similar! Can totally relate!

    • Perrin Weber
      Perrin Weber Month ago

      @Joris Suffuhrt Answer, why not? Lol I'm still laughing 10 minutes after watching! This was hilarious 😂

    • The Vibe
      The Vibe Month ago

      @Shattering The Glass Ceiling well, you'd think that's the stupidest thing in the world but today i'll have you know i scraped the ice off my gixxer thaw 2001. it was all good till i hit second and it suzuki'd all over the street.

    • Anthony laduca
      Anthony laduca Month ago

      Biker and bread do have drilling lubricant
      It doesn't overheat

    • Joris Suffuhrt
      Joris Suffuhrt Month ago

      Just 1 q. Why?

  • Keith Allen
    Keith Allen 15 days ago +1

    "we basically have a 50% chance of it working"
    Yeah I think that was the 50% you cut off Craig 😁🤣

  • Dice Doomkid
    Dice Doomkid 26 days ago

    Maybe some bracing from the other wheel would help, and it would be cool if you could make it like a tank tread, sort of like a snow mobile

  • Lawrence Iverson
    Lawrence Iverson Month ago +1

    Might work a bit better if the halves were 5/8 or so to give a longer transition !!

  • NJ MXJunkie
    NJ MXJunkie Month ago

    After watching the video more, maybe you should find a way to lock the suspension solid. That should completely change everything. Once the bikes on the rear half wheel it drastically changes the leverage on the shock making you dip down than pop back up when you get to the front half

  • Giovanni Giorgio
    Giovanni Giorgio Month ago

    You need another suspension between wheel 1 and 2 to remove the bouncing... it's like a long lever vs a short one, best yet would be a double suspension between 1 and 2 and remove the original suspension or keep it quite soft , also you should have kept more shoulder on the wheel as the ends of each tyre are softer and can bear less load than the middle part (same reason why we make arches to distribute weight to the extremities... it's not impossible but you'd need materials that are harder at the edges than they are in the middle sections. To make it work perfectly you could get smaller wheels with 360 tubes but larger rubbers on the parts that make contact and constrict the parts that don't to avoid deformation.

  • John Boy's RC
    John Boy's RC Month ago +43

    That's a pretty genius horse simulator you've made there. Gotta dress it up to look like a mini horse. Hilarious.

    • Muskoka Mike
      Muskoka Mike Month ago +1

      and to think you only needed a quarter outside kmart until now! lol

  • Gohan Has Transcended

    Finally! A perfect bike for me! I’m always tired of my bike riding smooth and stable. I don’t want none of that. This build is the bike of my dreams

  • Circle14
    Circle14 Month ago

    The bump is caused by the rigid arm between the wheels being at the wrong angle relative to the surface. If the support arm was on an additional axle/swivel and the shocks connected further back on the arm it should smooth it out a ton.

  • Wes H
    Wes H Month ago

    I believe the reason its moving up and down is the difference in leverage, one Tire is father then the other from the spring if that makes sence so if you got rid of the spring and made it solid that should go away

  • Alderoth
    Alderoth Month ago

    You need to angle the beginning if the tires, like a knife edge so it's not a solid end hitting the road. Even then you probably need to extend the edge far enough to where it almost meets the other tire like 2 half 🌙. Then you won't have that harsh hammer like feeling happening. Probably need the points to be soft as well so it bends when it hits. I could be excess molded rubber shaped into a crescent, but it needs to extend to where the tips on either tire almost touch probably. It could work though. You could probably do it better with three half tires that way one is always touching the road, but it still needs to cushion when it comes around.