In this video we test the steering and drivability of our 3 wheel drive motorcycle concept. First Episode • Building a 3 Wheel Dri... NEW MERCH bummotorsport....
I’m super stoked that we got this strange bike to turn haha what engines should we put on it for the full send?
@fishmasterasdf
24 күн бұрын
now you have to make the eengine full billet
@josiahvangelder4993
24 күн бұрын
2 stroke with CVT for suuuuuuuure
@T3chpat
24 күн бұрын
How about you put an engine from a scooter? They already have a cvt gearbox attached and there's loads of old 2-stroke that can be highly tuned, like a Gilera Runner 125cc, those engines gooooes like hell, tuning parts are easy to find (in Europe at least) and they don't weigh much! Also maybe some stearing dampers for the rear? So it doesn't torque stear! As much 😅 Stay awsome guys!
@Zane.Wellnitz
24 күн бұрын
You should put the engine on the front and have the front tire pull you. It would be ideal for this bike.
@weyderwarr
24 күн бұрын
I would recommend reading Tony Foale's paper on the concept of a motorcycle with 2 wheel steering. If you google his name and "2 wheel steering" you should find it. Dual steering the way you guys currently have it configured cancels out the gyroscopic precessional forces that help keep the bike upright, as long as the front and rear steering angles are equal. If you reduce the angle that the rear can steer, you can maintain some of the self-balancing gyroscopic forces, but the front and rear steering would need to be synchronized, and in the end you would still have reduced self-balancing forces. The rear steer would also prevent counter steering, and I guess that could be both a pro and con haha Easiest way to make the physics of this bike work would be to have a fixed rear, front steer, with the 2 center wheels on casters. Technically you could come up with a gearing solution to turn all the front 3 wheels, but they would have to turn at different angles which would make it pretty complex to hack together. Powering the two casters could cause issues but might be doable since they're forced to stay in-line with the front and rear, but you should be able to at least make it 2wd
@michi_danksta
24 күн бұрын
You must have a beautiful mind because the design is more art over function. I do like seeing you evolve. You needed a another year with the gindhard crew to hone more skills. Keep on building
@davidanalyst671
24 күн бұрын
holy shtt. Lets just pretend that I wrote a whole paragraph of ideas explaining the physics of why this is a bad idea to have 4 wheels and front back steer. My man you need to go to a local university, drive this in front and ask if they have 10 minutes to help you with it... MechE's would LOVE to work on a project like this. My internet connection drops and i lost a paragraph of content lolz
@davidanalyst671
24 күн бұрын
the basic gist is that with two wheels in the middle, their tendency is to skid sideways instead of rotate with the bike. So if I was working on this bike I would offer you two choices. It looks cool. so do 4 wheels with front steer, or do 3 wheels with front and back steer. If you do front and back steer on a bike, I would not take it over 6 MPH, cause thats dangerous as fck.
@weyderwarr
24 күн бұрын
@@davidanalyst671 If you configure the front and rear steer to turn opposite direction (i.e. front left, rear right, to make the bike turn left) would cancel out the gyroscopic precessional forces that help the bike self-balance. And making it front/rear steer by turning in the same direction like an EV Hummer would make you go sideways and low-side. It's just not possible on a motorcycle. Tony Foale wrote a good paper on the physics of the 2 wheel steered motorcycle concept and why it's not feasible.
@LesFishingMoreCatching
24 күн бұрын
You need to tie the front steering to the back wheel so you have two wheel steering. Otherwise the free pivot will be a problem under power. Cool project.
@silasbodmer2030
23 күн бұрын
I know its not your style, but it would make so much sense to make this thing electric, that way you could mount a motor per wheel.
@FaithfulMC
24 күн бұрын
Monster chopper at home😂😂
@Bummotorsport
23 күн бұрын
@@FaithfulMC 😂😂
@firstfromabove
23 күн бұрын
I mean it's a unique idea. But unique doesn't always mean good. Loved your first couple videos and loved your content with GH, you built some pretty cool stuff there. But to be honest, that led me to expect a little more out of your own channel than is being delivered with this particular project.
@sunburntodin910
23 күн бұрын
Having multiple points of articulation will intensify any wobble you pick up. As someone said before raking the front wheel could help some. Also using car tires is going to be difficult and will be working against you when turning. The flat contact patch wants to remain flat and any cornering at speed will make leaning difficult and dangerous. At least over inflated them so they are rounded lol. Can’t wait to see this beast fly.
@orlinchirinos1981
23 күн бұрын
I can not believe 😂 Will went from grinding hard to becoming a bum
@bowieinc
16 күн бұрын
Shock absorber between drive wheel and frame beside pivot may help contain the wobble. Fun build.
@chrismarquis2452
24 күн бұрын
That drive need to be fixed or it will drive the back end in it's own direction. Constantly fighting the balance of the 2 pivot points
@darren8517
22 күн бұрын
Keep trying stuff. This is fun to watch!
@Bummotorsport
22 күн бұрын
Thank you !!!
@mpet8647
23 күн бұрын
powering from a trailer/castor will always give you issues. Better to put the sprocket on the other side of the wheel and run in reverse, so its powering from the front.
@agkracing140
23 күн бұрын
You definitely near gear reduction. Install a jackshaft or CVT. Putting some rake in the front steering tube will help stabilize this machine. I love seeing custom builds like this. Keep it up!
@tireballastserviceofflorid7771
23 күн бұрын
He has enough room to just change to a massive gear and get it lower.
@beardedbodger
23 күн бұрын
Drive needs to be from the front so it pulls the train of tyres straight
@El-Burrito
22 күн бұрын
Yes this is my thought too! Like they said, it starts wobbling when they try to accelerate cause that back powered wheel can just go wherever it wants
@bardenegri21
24 күн бұрын
Think having the motor on the front would be a lot easier to drive. Right now it's like backing up a semi truck.
@MEJECIEN
23 күн бұрын
@@bardenegri21 wouldn't having motor on the front contribute to steering issues? If they had a second or even third motor on the middle wheels, those would be fixed. Have the rear motor provide the most power for pure propulsion and then have the other motor(s) more as a turbo effect? Only activated under full or almost full throttle conditions.
@TSRGarage
24 күн бұрын
First I like it. Looks like you're geared for about 50 to 60 MPH. (Just a wild guess) I don't have an exact tooth count, but the size of that top sprocket. Ratio to the bottom sprocket/ turning the diameter of a car tire, with 50 hp it would be fast as ****. The motor can't get any rpm. As soon as the clutch starts to take hold. It bogs the motor. Edit: I was way off on the speed. 🤔 from what I can get out of the video . 20 tooth clutch, 50 (ish) bottom sprocket, and 195/ 60 14 tire .... and some real rough math 🧮. .. If you ever get the engine wound out to 3600 R.P.M, May be closing in on a hundred mile an hour mark.😮🏎💨 zoom zoom
@EatSleepEmpire
23 күн бұрын
This is such a chaotic idea but it makes sense in the context of this chaotic channel.
@Jonathanwegener
24 күн бұрын
I really don't understand why Honda doesn't make these from the factory, there missing out on such a big market!
@Bummotorsport
24 күн бұрын
@@Jonathanwegener right?!
@KermitOfWar
23 күн бұрын
Solution. Go to a junkyard, find four Chevy Cruze's or Chevy Sonic's & yoink the spare 16" tires, lol.👍
@garrettferry8266
20 күн бұрын
When Mom says we have a monster chopper at home:
@JMusic_23
12 күн бұрын
That’s awesome. You got your own channel
@westellmodel
24 күн бұрын
It has too much slop in the pivot points. Tighten everything up and get a clutch on the engine. It's gonna be cool lol
@Bummotorsport
23 күн бұрын
@@westellmodel thanks we definitely need to work on tightening things up it’s a concept right now definitely has thought us a lot😂
@jonthecomposer
20 күн бұрын
The front wheel should be either on its turning centerline or behind it. Out front will not allow you to go over just a few mph. When going faster, it will "catch" and throw the bike's lean in the opposite direction of the turn OR it will catch and pull the steering all the way to one side. Just trying to save some heartache and possible injury!
@nickgibson1191
24 күн бұрын
Got a shirt boys. Keep it up can't wait to see these builds progress
@Bummotorsport
23 күн бұрын
@@nickgibson1191 thanks!
@mattinthehat6780
19 күн бұрын
Power on the rear wheel but steering on the front is like trying to reverse a trailer at speed. Move the motor to the front wheel and ot should be way easier to ride
@jackfalcon5352
24 күн бұрын
Would probably steer so much better with some motorcycle tires so you can lean it
@secretcrafter92
24 күн бұрын
At least the front 3 weels
@Thepeanutgallery666
20 күн бұрын
Okay, so if you want to build a four-wheel motorcycle, I think your best bet is to build a two-wheeled motorcycle with an additional motor on the front wheel, and then build an inline trailer and put a motor on each of those wheels. Not a trailer with a wheel on either side, but a trailer with wheels sort of like you have on this one. I think that's going to be the only way you're going to be able to make this happen. Also, look into rake and trail. Those are important geometries when building a motorcycle for stability.
@won2wonder
23 күн бұрын
YES! This is the janky shit I want to see! Just bought a T even though shipping to UK is crazy (been watching youtube vids for many years and only second time I think I've bought merch from a channel). Love to see the new equipment in the shop. Belive in your channel and the viewers will believe in you!!! All the best!
@GLiTcHGaMeR-ze7xd
21 күн бұрын
Try using a chain and sprocket for smoother turning. Having 2 sprockets horizontal next to each other when done right can allow simultaneous front and back steering. Keep up the good work👍
@GLiTcHGaMeR-ze7xd
21 күн бұрын
Horizontal on top of each other**
@mattmissen
23 күн бұрын
You need some rake on the front steering, othwise it will be too twitchy
@tylerhunt7552
23 күн бұрын
Love this experimental build type of stuff. Cool to see what works and what doesn't. Still looks cool though!
@djkommando
18 күн бұрын
Maybe try adding a steering stabilizer to the rear end to keep it from being so wobbly.
@MultiSmokers420
24 күн бұрын
You guys are doing an awesome job I'm really excited to see this channel keep elevating! you guys are on a great roll congratulations!!
@Bummotorsport
23 күн бұрын
@@MultiSmokers420 thank you we are putting everything we’ve got to make this channel 🙏
@beardedbodger
23 күн бұрын
Motorised unicycle! You have too!
@kurttaz
20 күн бұрын
Your back steering wheel only needs to move a ¼ of what the front steering does, and put some dampers on as well, that should take some of the twitchy out
@sledlord
19 күн бұрын
A couple of suggestions if you are sticking to the current design. You have the steering one-to-one right now. I suggest putting the pivot points on the input bar further in so you can have more leverage or torque to exert on the front wheel. Also, on both the front and read wheel, put in a little caster angle on the head tubes so it is more stable
@MEJECIEN
24 күн бұрын
You guys are doing an awesome job. If you put in a rear steering assist, that would help with the rear end slop. What about adding Heim joints where the steering connects?
@Bummotorsport
23 күн бұрын
@@MEJECIEN definitely something we are working on:)
@toivoton1451
24 күн бұрын
Maybe put the engine in the front, since now its pushing and causing unstability. In the front would be viceversa
@kadecampbell8098
22 күн бұрын
One or both of the two center wheels should be driven instead of having power come from the rear. That way, it will be more stable under power, since the force is not applied to a component that wants to rotate under acceleration. It's like trying to push a chain in a straight line. You would also be able to say that it's mid-wheel drive.
@WRXBase
22 күн бұрын
Yes. Very yes.
@chefkamelbw
16 күн бұрын
You need to run a steering stabilizer on the rear steer in order to take the flex out of it.
@burgboy2459
24 күн бұрын
The rear wheel needs to be tied into the steering to keep it from wobbling when power is applied just remember to do it to the opposite of the front wheel!
@SiteUnscene
24 күн бұрын
You should turn the engine and front wheel around and make it fwd.
@timfields696
23 күн бұрын
would it make more sense to power the middle two wheels and just leave the front and back as steer only? that way the weight of the motors wont be swinging back and forth as you turn. However you end up doing it I'm excited to see what happens next!
@ninjababy0320
20 күн бұрын
Both of these videos were borderline painful to watch. Hilarious.
@xpndblhero5170
24 күн бұрын
This is never going to work until you power the front wheel, it's not going to be able to "push" all of that weight in line like that... It needs a motor up front to pull the weight along then the back will power it the rest of the way.
@PeterPeer
24 күн бұрын
Great progress! Prototyping at its most experimental (with emphasis on MENTAL). 😅
@wadesrage
23 күн бұрын
I watch ,it's hurts to but I contribute so you get more watch time and funds to build better bums GHPC FL!!
@pendragon6207
23 күн бұрын
Loving the content, but the audio mixing was all over the place in this episode. Had to EQ the audio like 20 times, since it alternated between blowing my ears out and barely being audible ^^ Might wanna monitor the audio levels a bit! Other than that, great shit!
@GavinRemme
18 күн бұрын
Love the experimentation, keep going. It might not work how you originally plan but you’ll make modifications and figure it out. This is how you learn the fastest! Looking forward to the next video in the series.
@FangOfTruth
24 күн бұрын
If the engine survives use it to make a BUM style shop fan. Make a frame and power a large fan with it. Just run exhaust out of the shop. With the right gearing it could just idle and still put out decent air.
@Bummotorsport
23 күн бұрын
@@FangOfTruth great idea we need a fan
@jackeyboy6538
24 күн бұрын
Using a wrench head to lock down the steering column is the most BUM shit I’ve ever seen
@sebastiankotilainen7807
24 күн бұрын
good luck with the new channel👍 I would like to know how much cannabis you smoke when you plan what you will build the next day😄
@Bummotorsport
23 күн бұрын
@@sebastiankotilainen7807 🤣
@Wesley-z7z
24 күн бұрын
That was awesome. Great video. Love the channel
@solrshawn
24 күн бұрын
Come on man, just put the engine in the front. Steering problem solved.
@Bummotorsport
23 күн бұрын
@@solrshawn good idea
@unrealcraic2331
21 күн бұрын
This may be the swindliest thing I have ever seen. Amazing
@Survival_is_Key
24 күн бұрын
You're going to have problems with the power in the back because it's always going to want to be squirrely because of the Pivot Point if you put the motor in the front it'd be a lot more controllable
@Bummotorsport
23 күн бұрын
@@Survival_is_Key definitely something we found out in this video unfortunately haha making big changes for the final build
@Macvombat
23 күн бұрын
This is the dumbest great idea I have seen in a while and I absolutely love it!
@nathanblackford4866
24 күн бұрын
Put the motor in the middle, it’ll work a lot better
@slxnderr
24 күн бұрын
the wheels give me tank vibes so i just wanted to say maybe in the future you could build a mini tank that would be awesome
@Bummotorsport
24 күн бұрын
That’s a great idea!
@PyrateGFXProductions
24 күн бұрын
@@Bummotorsport just for suspension purposes, you should put the 2 center wheels on a common vertical pivot like tank rollers. Otherwise, off road, it will act like a ramp.
@malakiblunt
24 күн бұрын
you dont need gears to reverse the rear steering just have the rear push rod go diagonaly across the frame to a crank on the oppsite side of the rear wheel from the front wheel
@brannonhamman7791
14 күн бұрын
For testing purposes yall should add some temporary training wheels so it doesn’t fall over as easily as yall test the steering
@Bummotorsport
14 күн бұрын
@@brannonhamman7791 great idea haha
@lawnmowerdude
23 күн бұрын
I’m here for the cyberpunk Quadracycle.
@ericlewis3444
24 күн бұрын
Love this. if all the wheels were pivoting and linked with steering it would support the motorized wheel instead of the back just pushing it random angles lol
@208ridersminibikes6
23 күн бұрын
Its the centipede!!
@GT_1506
24 күн бұрын
yay Im here really early!!!! im exited to see another great video!!!!! second!!
@Bummotorsport
24 күн бұрын
@@GT_1506 premium thanks for watching!
@GT_1506
24 күн бұрын
@@Bummotorsport thanks for making amazing videos
@Bummotorsport
24 күн бұрын
@@GT_1506 thank you for watching them🫡
@GT_1506
24 күн бұрын
@@Bummotorsport how could i not?
@AI-zy5qs
19 күн бұрын
Looks fun might help by rounding tires or using motorbike wheels on front and back
@jordanfr13
23 күн бұрын
Your gearing is way off! Looks like you have about a 3:2 ratio on your sprockets. At 3600 rpm you’d mathematically have a top speed around 200 mph 😂
@alxgu198
23 күн бұрын
Maybe that’s the plan 🤷
@bababagginz
24 күн бұрын
it will get a lot more stable if you add some rake! Perhaps change the front steering stem and handlebars to like a 10-15 degree angle (will look better too probably). The stability comes from the fact that when the bike leans to either side, the steering wants to go in the opposite direction, making it self-stabilizing.
@bababagginz
24 күн бұрын
on second thought, youll likely need the steering to pivot so far so that the front wheel contact patch is behind the pivot (if it were extended to the ground). So that would be more like a 50 degree angle. still doable tho! and it would look sick as hell
@ryanh.bastian8853
24 күн бұрын
Reminds me of a millipede. Project name suggestion: CyclePede Love watching you guys muck about and make shit happen
@Bummotorsport
23 күн бұрын
@@ryanh.bastian8853 love that name😂
@malakiblunt
24 күн бұрын
these are realy well made videos - love the music and editing - well done guys
@Bummotorsport
23 күн бұрын
@@malakiblunt thank you!
@AnTiG1ZM0
24 күн бұрын
Just the correct amount of crazy.
@Bummotorsport
24 күн бұрын
Haha it’s definitely a lil crazy 😅
@codmphildeeze4202
24 күн бұрын
Some sort of rake angle in the front and back to keep the wheels straight would help with the wobble
@denniswilder3878
24 күн бұрын
The centipede !! 😊 what would happen if the front and rear were linked and steered at the same time ?Or maybe just some shock damping on the rear ? Good luck.
@emansuela_real
24 күн бұрын
It needs a single hinge point not 2. 2 wheels - hinge - 2 wheels
@Darth_RevRen
24 күн бұрын
You need some dampners to stablelize the steering
@iheart3dprinting951
23 күн бұрын
I skipped through it near the end, and you may have covered this. Wouldn't it be better to have the powered wheel to the front wheel. I think the drag of all the wheels will always make it "crinkle" or "fold" where if you pull it you will stretch and elongate the wheels. This is basically a chain of wheels, you can't push a chain but you can certinaily pull with it. Think of a train. Again if you covered this my apologies. Either way, Goodluck!
@donlongo25
24 күн бұрын
pushing a rope instead of pulling it... cool...
@BozowolfnHD
23 күн бұрын
Hey guys, I would recommend some steering stabilizers. Just a thought, it looks a bit loose in the steering.
@jmowiscoproud
24 күн бұрын
Add 2 trailing arms with heim joints to the front and rear steer wheels! I feel that will make it more stable
@unclebanni
23 күн бұрын
Great contraption guys! Looks like having the engine push while it can pivot independently like that is like trying to reverse a trailer and then steer the trailer. I think it could help if you connect the engine section to the steering, so that it is still independent but you can control the power through the frame better. Keep it up guys, great content 🤙
@mustachemike802
24 күн бұрын
You guys really need a chain and sprocket steering system on that contraption. It'll tighten up its steering ability and make it so you can set up a synchronized rear steer... And for cripe sakes, put some pegs on that thing before you run yourselves over!😂😉
@C.JoneZ19
23 күн бұрын
I think part of the reason it gets so squirlly when you give it any power is cuz you have it under loose rear wheel power, it's just like backing up a trailer where even if you are completely in line and back up completely straight eventually the trailer is gonna wanna go left or right and when it does it goes quick and that's why it's so easy for beginners to jack knife trailers because you gotta learn to correct early. But anyways I think if you still wanted it to be rear wheel drive you'd have to figure out some way to lock in that rear wheel to the steering system so then it could push the bike forward linearly instead of basically at the whim of that joint and then also you could have a front and rear wheel steer setup which could be pretty premium the only issue then would be finding a way to drive the other wheels as well.. maybe it would be easier and make the whole build even sillier if you did a front AND rear wheel drive setup and just slap a motor onto that front wheel basically how you did with that back wheel... just all some random thoughts I had though and who knows how much merit or actual truth is behind any of it.. keep on building ugly machines tho cuz this stuff is mad entertaining 😂
@fallencommaner
24 күн бұрын
"It's like a unicycle!" So hard to ride and unstable in all directions? 😂
@analog56x
24 күн бұрын
seems like having the front pivot so far behind the front wheel is causing it to whip a lot... or maybe its that the rods you used arent tight and are allowing the wheel to flop around... pretty interesting stuff guys! keep it up haha
@elios7623
24 күн бұрын
the coleman digievolved, that's hella premium dude
@Bummotorsport
23 күн бұрын
@@elios7623 😂
@edwardweisenburg6585
23 күн бұрын
Run forest run .!!!!! Momma always said : life is like a box of chocolates, you never know what your gonna get ????,lol 😂
@nathanmullins836
12 күн бұрын
Wheels are too flat to turn like a motorcycle.
@Thenoticing187
11 күн бұрын
Hey, from your biggest critic and I actually want to see succeed. The tires can't be flat... there u go
@Bummotorsport
10 күн бұрын
Thanks!
@Thenoticing187
10 күн бұрын
@@Bummotorsport much love brother
@JoesGarage831
24 күн бұрын
Interesting idea, but your current setup needs to have the rear steering linked with the front steering so it doesn't have rear side ways push that makes it squirrely. Some push and pull cables from a boat, and you flip them, so you get that stable rear steer. Keep up the great work 👍.
@djjaysky9071
24 күн бұрын
it wants to tip because of the rear wheel being able to pivot
@mindgoblindnb
14 күн бұрын
Hear me out: replace the car wheels with dual bicycle wheels. So eight bike wheels side by side in a straight line. It'll lower the weight so it's much easier for the engine to put down power to the drive wheel and make it much easier to turn
@LeftyTheNub
20 күн бұрын
Your gearing ratio is way to big. You need a 10 tooth drive sprocket and the biggest sprocket you can find on the rear. That engine should push you to 50+ MPH if geared correctly. A steering dampener on the rear would help a lot with stability as well. You are set up as a pusher configuration as is with no weight on the rear so it's going to want to jump all over the place. You could also lower the center of gravity if you stretched the rear section and put the motor down lower to help with tipping.
@timgilreath3792
24 күн бұрын
Cool video. I want to see one of you ride a unicycle..... And juggle!
@Bummotorsport
23 күн бұрын
@@timgilreath3792 Taylor definitely can maybe next video
@carldacrochunter
24 күн бұрын
Nice work ! Definitely didn’t see that thing steering 🤣🤣
@keithkohr2552
24 күн бұрын
Make the middle wheels power and front and rear counter stear
@seanwhalen5011
6 күн бұрын
I think the rear needs springs on the steering to keep it more controlled.
@M-D-K
23 күн бұрын
would making the front 2 wheels pivot rather than the front and back work better for stability and steering? Also, make a middle wheel the drive rather than an end.
@BikeWorkz1991
23 күн бұрын
That exhaust is preeeeemium
@WRXBase
22 күн бұрын
mechanically limiting the rear steer may help. The front should still be able to compensate.
Пікірлер: 379