+ 1 ( really + many people on this )
It is better to spend your design / mfg. time on a large RC Motor that sits on the swing arm right in front of the whee/tire .
A whole new swing arm will have to be made to accomplish this.
Do you have someone near you that can make a new swing arm ?
Can you do that yourself in your garage / shop ? ... if you have one.
I would like to find someone here in the South S.F. Bay area that can make a swing arm for me for a couple of reasons. one is to mount a RC motor in front of the wheel.
If you have access to a Machine shop, you do not have to do any welding, just make plugs , and or Lugs , and epoxy tubes into them. ( This is the way the first Tesla Roadster , and perhaps even all the newer Tesla Motor Cars are made. Look at the Chassis and you will not see welds on the chassis on the Roadster, it was over 90 % bonded together , mostly all Aluminum. )
So all you need to design and machine ( or Metal 3d print ) , is the plugs/lugs,
Get off the shelf tubing , carbon fiber tubing is available to buy .
There are two designs when doing a motor in front of the wheel.
Driving the cassette ( less power because bicycle chains can only handle so much power before they break )
Driving the left side of the bike, by using the 6 disc bolt holes to hold both a disc brake and a larger diameter sprocket. ( more power since you can now use stronger chains , but do not have the use of different ratio's )
Who here in the SF bay area can make swing arms ?
SlowCo wrote: ↑
Jul 17, 2018 11:36 am
I suspect a mid drive system through the chain will be a much better idea.