Originally, the motor is wired in Star configuration. If you rewire it from star to delta, the motor will spin from the original 700 rpm to even 1200 rpm ! That means you'll gain a lot more speed.

wa

Lets assume you don't live in a very dry country and the drive wheel and tire get wet. Lets say you're Skimming to work and you tyre goes through a splash of oil of another car and you're 7 hours late to work due to drive slippage? A Design that needs some Design.

Man I have been waiting for someone to build a friction drive with one of those.

Can I order this for my son

...ELECTRIC motorcycle 🏍 etc are bad news ..,,WIND FARMs are Weapons of Mass destruction WMD and causing WEATHER WARFARE putting ELECTRICITY into the Atmosphere and flatearth101 is real and Canada and USA are Corporations of Rome btw and government means MIND CONTROL so Stop VOTING and

Loved this project and Just what I was thinking. Yes put the motor on a hinge andI a gear-lever like a handbrake in a car to disable it

I only came here to comment the same 😂

Where’s it gonna go? At least six inches in circumference to reach the pinch point.

KZfaq safety sallies can not resist

Debieras probar instalarlo atrás de la llanta trasera ya que tienes buen equipo, hasta te protegería del agua que salpica ésta. Suerte

(motor)

you should be able to done this using arduino, motor driver, and reverse the enable pin, but i don't know in 3 phase motor, should be the same principal and should be able But why you need reverse in bicycle?

@@yoyatech he means that he can reverse the process and remove the pieces. Not going reverse on a bicycle

@@alfredo-ff ah, sorry i'll tell you guys if i made one

Better . Where can you buy precut kit ?

What watt size are the motors I have two smart st zing hover boards what range will the battery give and speed please I now you could have a bigger amp battery but this looks ideal for a trip around a town and light if added to a cheap fold up bike to carry in a camper van

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make sure you add a guard. wouldn't want to see what happens to any lose clothing or whatever is attached that goes between those two wheels.

kzfaq.info/get/bejne/rdBxrbqY2dyZdJ8.html Pretty sure these will take about 1500 watts if you bring the volts up;)

@@0xsergy good thinking mate!

WHY NOT USE BOTH MOTORS?????

they are very powerful motors, usually dual 350W, they just reduce the speed so people dont get killed on them. You can over run them quite a bit without damage, most can handle 500W punch and then coast at 350W.

did it go well?

@@rocco-s-107 yes, but it was stolen.

You get more splashing down the back of your legs tbh

Такую мощность с таким током длительно не может выдавать это колесо. Сгорит.

Dynamos arent old they are still a thing. mostly in hub dynamos tho

@@hillppari Yeah, I just saw the old school light dynamo devices still being sold. I guess with the resurgence in vintage stuff, including vintage bikes, they saw a market for some nice chrome classic styled bike lights, driven the classic way. They are mighty sharp looking too, very much suitable for a 1950's/'60s themed bike and is styled after the old school car headlights.

What is “reverse friction”?

@@thechumpsbeendumped.7797 Reverse torque (or friction) happens in all electric motors. It's a side effect of spinning against something and seperate from regular friction, but related. Like even the parts of the motor and fighting against itself, not necessarily an external force (although it happens with or without load). Bearings, for all that they smooth friction and movement, cause a slight resistance of their own in the motor. The shaft and the brushes rubbing against the commutator etc. That's back torque, or reverse friction/torque. The magnets in the motor also contribute to it. Additional force, against the motor basically, that friction from elsewhere cannot fully account/isn't responsble for. Slight usually, but they all add up. The idea for generators which eliminate this, is highly sought after for generators that can generate more power than you put in. The quest for perpetual motion machines, we've been chasing for centuries, that's what it's related to. Mind you, not really full perpetual motion, we've given up on that, but close to it, getting way energy out than you put in, no losses=super efficiency. And it looks like India, not long ago, created the first generator/motor, that is so smooth, it's frictionless and eliminates all back torque too (back torque was the final hurdle). The ultimate in efficiency. So reverse torque is a problem, as you can see, in that kind of situation. It's just not one you hear mentioned a lot, because unless you are creating the most efficient motor ever made, we just apply more power to the motor and power past it. It is frequently an ignored metric, except in situations of extreme efficiency. It's most noticed and an issue when dealing with efficiency. The most efficient motor (like what India just invented), would be one with no losses, one which eliminates this hurdle and apparently, they have. It would literally have to be the smoothest motor on earth really.

@@hillppari In the UK Dynamos are banned i think because they dont work when the bike is stopped at traffic lights or junctions...but they were clever little devices when i was young :)

This is what I was imagining for the spring mechanism: kzfaq.info/get/bejne/ndumedSTmeDLcps.html These guys used gas spring, which is even nicer.

1 - Two motors would double the torque but not the speed. The complexity and the (slightly) reduced range (assuming that 2 motors would be limited to half the wattage of the single one) would not be suitable for street use. Maybe only for very powerful motors or offroad use. 2 - Probably the original controller wouldn't survive 48V battery and so you would get less watt output (maybe too low to be used as ebike motor but i don't know). 3 - Not my competence area, sorry!

I tried friction drive and its not that good. Burns your tire when uphill and works veeery bad after rain. Now i wanna try with chain. I put 44 teeth gear on rear wheel and need to find out some small sprocket on the motor. It might work with ratio 44 to ~10. Will see

@@bobikbobikowy5458 Yep - be sure to get the right shaft size as well as the chain size. They have them on eBay for around $10.

that's a shame

Not really. Only when it is wet, the motor has almost no grip at all. Apart from that no complaints😏

@@hennybutabivery cool. I wonder what would happen if you had a mountain bike tire with really large treads, and then 3d printed out a tire for the hoverboard with flexible filament that had an interlocking tread that matched the bikes. Ive seen some pretty tough 3d tires, but still i wonder if they would just get shredded or what would happen when they arent perfectly aligned.

@@HavokBWR too much friction in such a system i think, plus getting 3d printd things that narrow would make their strength diminish. tread blocks have a fairly narrow spacing, the tire he has on there is a pretty "mountainy" tire.

Noisy

@@HavokBWR That's a big piece to print. Have you printed flexible filament ?

Hello, all that info is in the video description😏

Found a hoverboard on side of road today and been thinking what to do with it. I might try your idea it's brilliant

Sim , e a mola vai dar mais tração para o motor não patinar.

The spring loaded setup wouldnt add that much cost to the project, you can probably add a small brake cable to adjust the tension on the wheel. I built something like that way back for my gas scooter with a trimmer motor. Fire it up out of contact, then lower the engine onto the rear wheel while in motion. This wheel-wheel contact will suffer in wet applications where you will slip between the wheels, thats where some pedal assist will come in handy before you are coasting.

​@@cezarmeleiro3707 MOTOR

Yes you could but it's a little bit heavier than normal because you have to drag the motor along.