Ebike 4.0 New motor mount

It's a Turnigy CA-80 160kv

Tom Stanton

Hi Tom, Which motor is this???

Excellent that you backed up computer simulation of pulley spoke with real mechanical load testing. I have to say though that i was struck by the Chiron becaus of its large build volume. Please let us know what you think of it as you get some use out of it.

Yes I will be waterproofing the speed controller and putting a cover around the motor, which will also protect my leg from it. Thank!

Tom Stanton

Great new design! So awesome how rapidly you can test and finalise these 👌 Are all the electronics waterproofed? What happens in bad weather?

Darcy Snell

Nice mount ! But for French viewers like me it’ll be hard to understand all your great explanations without good subtitles.. I can try, but if you know a good potential translator, ask him please !

Looks so good Tom! 😍

At least it keeps the CoG low which is a very good thing. You could almost have put the transmission between the motor and the pedal to take advantage of the chain transmission

Can't wait to see how it develops!

Logan Vinson

Yes I'm still going to do the double step down ratio using an additional shorter belt. So will be 20T-40T, then 20T-180T

Tom Stanton

Are you still going with the ratio reduction pulleys?

U.S. Water Rockets

Yes it will require a guard for sure. However, I've done a few cycling tests with a 'dummy' motor mount and it's surprisingly not an issue. Because the motor/mount is narrower than the pedal crank, it's only an issue when my foot is at the lowest position and I tuck my knee in.

Tom Stanton

Legs are naturally wider as pedals are wide, however in certain positions, it's a bit close. I will make a guard to prevent any painful encounters!

Tom Stanton

Actually that's similar to what you showed in your post on 17 July.

Tom, who am I to say but, I think that motor mount position looks as though it will make pedaling difficult if not risky to the left leg. If you leave it there you will need to fully guard the rotating pinion and belt. Wouldn't it be better to mount the motor off the top of the rear forks, you don't even have any brake calipers in the way.

Great ! Legs did not touch the motor ?