Homemade BB Drive Electric Bicycle

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Autore: hutchtransfer

757245vista

8m 3sunghezza

1239valutazione

This bicycle has a Unite MY1018Z 450W 24V motor attached to the cranks. The motor has a 7.18:1 gear reduction built into the motor itself, and there is an addtional 4:1 reduction from the motor to the cranks. I have a special freewheeling crank system that allows the motor to turn the chain and the pedals to remain stationary. I also have a Megarange freewheeling sprocket in which the smallest gear has 14 teeth, and the largest is 34 teeth. This gearing allows for a maximum speed of 28mph. Normal cruising is around 20 mph with no hills or wind. The beauty of this system is that I can use my bicycle's six gears to match road conditions. The motor sprocket has a freewheel so that if I pedal without the motor, there is no drag caused by the motor itself. Check out my video for making the freewheel sprocket on the motor: http://youtu.be/eY41JBi3xgo Also check out my video of how I build my freewheel crankset with triple chainrings: http://www.youtube.com/watch?v=tVweIvS81rg A link to this bicycle is now live here: http://www.evalbum.com/4206

Commenti

i like how you upgrade the derailer

Hello, I also have one of these, you will do something to increase the voltage, I am interested in increasing thanks

Amigo, preciso deste conjunto de pedaleira. Qual o preço??

sir you can tell me wh
ich DC motor you have use in this

thnx 4 ur rply

i have 24 v 250w if i use 2 12v ups battery will it work??

omprkadh

@ Laurie Wincen
Knock knock.

I was hoping you would exsplain baterry size and throtle conections

Genius, it's 2016 and Bafang, as one of the best BB kits out there still can't be mounted on a crankset with multiple chainrings, that I think would've made it ultimate EB kit. as you can pull most from the motor, for steep and speed.

Genius construction.

Could u find a more windy place?, use a noise dampener!

Oh shit dude youre in the middle of nowhere! Hahahaha.....

does he cassette have it own freewheel too btw im a newbie thanks

Hi mate.What distance you go with this batteries?

excellent job ...

I wouldn't want to ride there. They have spikes on the side of the road to impale you if you crash or are ran off of the road.

I reach 30 MPH on my bike what is the deal get fat on the bicycle or make exercises...

send me details and material tooo plsss. can you do the a t on BMX??