View Full Version : A good EV bike conversion.
Patrike
05-11-2008, 08:24 PM
This guy has all the tools -- and can make anything. The most interesting part to me was the small size of the motor and controller but the power they can handle.
http://www.wisil.recumbents.com/wisil/shumaker/default.htm (http://www.wisil.recumbents.com/wisil/shumaker/default.htm)
Patrick
AtomicZombie
05-11-2008, 08:31 PM
Sha-weet!
Brad
This guy has all the tools -- and can make anything. The most interesting part to me was the small size of the motor and controller but the power they can handle.
http://www.wisil.recumbents.com/wisil/shumaker/default.htm (http://www.wisil.recumbents.com/wisil/shumaker/default.htm)
Patrick
trikeman
05-11-2008, 09:51 PM
I must have mis-read something somewhere. The guy has a 4000W motor running off a 10AH battery? Maybe that is just peak power, so he can ride more than a few minutes. It is sweet what you can do with a few lathes, milling machines and other stuff just laying around the garage lol.
Patrike
05-12-2008, 06:47 AM
I must have mis-read something somewhere. The guy has a 4000W motor running off a 10AH battery? Maybe that is just peak power, so he can ride more than a few minutes. It is sweet what you can do with a few lathes, milling machines and other stuff just laying around the garage lol.
Yah Tman - not sure about the batteries myself -- my uderstanding of AH rating is for 1 hour you can 10 amps -- 20AH your can take 20 amps for 1 hour if am not mistaken. Batteries also have a max recommended draw do to interanal resistance. You would have to look up the specs for the batteries in order to getthe specifics. I would say if they have not blown up or melted down yet he has the right ones!!
Patrick
Patrike
05-12-2008, 01:14 PM
Yes, it's good to see projects like this - thanks (at least in part) to the rising fuel prices. His, however, was no 'low budget', overnight undertaking. Between the motor, controller and batteries alone, he was right at a grand - not counting the pile of 6061 under his CNC, misc parts, ect, shipping and a spike on his electric bill.
Here's another intelligent (but conservative) design - one that's technically and monetarily within reach of most: http://www.recumbents.com/wisil/tetz/e-assistmetric/
I met John last summer at Niagra Falls and road in his Zotefoam velo. I don't think he had an assist at the time there -- not that I remember. That is definately a more down to earth approach.
I definately don't like the "have to pedal" approach in his setup and I would like a little more power -- over all great little setup.
Later
Patrick