My Second Build!

[steeeve]

Hey, this is my second post on endless-sphere but I have been a lurker for about a year. I built, tested and wrote a long paper on this bicycle. I will release the results of the testing, after completion of the paper. I wanted to share a few photos taken throughout the build and testing, by my lovely girlfriend, Natalia. If you have any questions, just ask!

Stats:
MAC 6t
10ah 48v LiPo
Lyen 12 FET 4110 Mosfet MK2 Sensorless Controller (Max output set to 1500 Watts)
*Now*Avid BB7 Dual 203mm Discs
Hook Worms 26"
Motobecane frame
Rockshox 05'

I would like to thank my buddy Lyle for the forks, frame , random parts and imparting bicycle knowledge. Also, thanks endless-sphere for being a wealth of information on electric bicycles.

 

[jslabonte]

Pretty clean build and nice battery box!
Inspiring, as I'm a long time lurker myself and I'm about to make the plunge on a 8T Mac on 10 AH 48v lipo.
I hope it turns out half as good as yours

 

[steeeve]

If i could do it again, I would have gotten 20ahx48v of LiFePO4 from cellman. The battery would have cost about the same as the LiPo. LiFePO4 batteries have such good economics right now. Double the Whrs of an equally priced LiPo and a way longer lifespan. The extra weight doesnt really matter with a commuter like this. I feel like a G rolling with the LiPo. haha

 

[jslabonte]

If i could do it again, I would have gotten 20ahx48v of LiFePO4 from cellman. The battery would have cost about the same as the lipo.

Wow are you serious?
I figured 200$ for a decent balance charger, 160$ in batteries, and 100$ for miscellaneous stuff (cellmon, wattmeter).
seems pretty far off from the 775$+100$ shipping lifepo4 would cost you.
Although, cellman 50v 10.25 AH pack seem attractive enough. I'm still affraid of lipo, I figures if you balance charge you are pretty much safe, but nothing beats the plug it an forget it nature of lifepo4.

 

[steeeve]

If you have any questions, ask. I will add more soon and its got the really cool info on this project.

 

[steeeve]

I am going to add some more information to this thread.







I think the moral of the story is that LiFePO4 gives great economics for commuters. I am pretty sure that everyone knows that on here.

Anyway, the bike has 750 miles on it now. I haven't had a single breakdown but the Maxxis Hookworms are about gone on the rear. I relocated to Colorado so the next bike I build will be registered. I pick up a cromotor and 16" moped rims, it should be pretty wild. The bike frame I picked up is a lot like the one Zombiess uses.