Road Racer Ebike

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safe
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Ebike - Side Scenic.jpg

 

http://sfbay.craigslist.org/eby/bik/5839792278.html

 

You can see the project here:

 

http://www.twospoke.com/forum/f27/safes-project-003-a-10614/

 

With a Kelly Controller set at 50 amps I have pulled 50 mph as a top speed, but I've geared it lower so the top speed is now 30 mph. (changing the gearing is easy, just get a smaller rear sprocket for $10)

The throttle needs replacement... the hall sensor went out. Plus you have two controllers to pick from.

Currently the bike sits in pieces in my mother's garage and she is in declining health (in a wheelchair) and making a rather sudden move to a nursing facility. I live in Wisconsin these days.

So the price is a fraction of the effort put into it. (literally years)

If you want a fun project at a good price this could be for you.

Email through Craigslist

 

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safe
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Joined: 08/03/2010
Points: 787
Re: Road Racer Ebike

 

Step Up to 80V at 40A.gif

 

An Update...

Mother has moved into Assisted Living. Condo is not going to be sold yet as I'll move out there and live in it for a few years until my mother passes away. This means I'll actually get a chance to use the ebike again and one idea I've toyed with for a long time is to Step Up the voltage to 80 volts using a pair of 20 amp voltage regulators.

Since it's a brushed motor this is easy to do in one step. (not so with brushless)

The advantage is that the gearing can remain low (meaning more torque for the same level of heat) but the top end will come back like I had the bike setup when it was geared taller.

240 Watts of heat won't even cause the motor to heat up. (from past experience)

Downhill it should reach a theoretical maximum of 65 mph.

After I get it perfected then I'll sell it.

 

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