Electric Bike, Version 3, Revision
Beginning in the article " Electric bike, version 3 "
To begin with, I dismantled the intermediate shaft, which had a backlash:
It’s already hard to say that the shaft was made soundly
I drew a drawing of a new shaft:
Master " Lefty " in Zaporozhye made several shafts according to this drawing:
In the meantime, with difficulty, I replaced the licked nut on the pendulum:
The shaft is installed in the frame, checking the operation at idle
Electronics layout reorganization:
I placed a box with electronics between the battery and the controller - dirt will not fly there. I will put the lid that closes the box with electronics.
I drove a little in garages - so far I'm afraid to give 100% power, because. there is no confidence in the motor bearings that they will withstand. I'll deal with them a little later.
Bogdan from Furor Bikes made a console for mounting the rear optics, but a little unsuccessful - the brake light is not visible under the rear fender of the bike. I'll have to make a takeaway for him. I painted the part black from a spray can - the paint went well.
I replaced the twisting of the phase wires on bolts and electrical tape with a terminal box. Looks good:
I completed the wiring, now all the lights work, including turns, stop, dimensions and headlight. Put dc-dc 75-150V -> 12V
Identified problems to be solved :
- There is no chain tensioner motor - intermediate shaft. Because of this, when you rev well, the motor moves out and the chain sags, no matter how you tighten the bolts that fix the motor. To put the tensioner, hmm, I don't know what to do yet. I would not want to cook the finished frame. I'll think again. While in this form it is impossible to go beyond the garages
- brake levers always show that the brake is pressed. You have to take it apart and see.
- rain protection. The bike is not small, you can’t drag it into the apartment or quickly under the roof. The 18 kg battery is also not easy to remove and carry away. In short, it must be hermetically sealed. To do this, I’m thinking of buying polypropylene and cutting out covers for the battery compartment from it, which I’ll most likely put on glue, but this is not yet certain.
- I would like a bike to stand without leaning on the walls. There was a leg on the pendulum, but during transportation from Kyiv by Nova Poshta it broke on the road and fell out somewhere. You won't find it anymore.
- An additional bearing is desirable for the motor shaft. There is no certainty that the bearing in a homemade motor will withstand the cantilever load.
- This is not a problem, but it would be desirable: to change the first reduction from a chain to a belt.