Electrified Downhill bike

[Metallover]

Originally Posted by zeropointbug

okay, thanks for the info. I mentioned these electric kits to my young brother out of university and he would like to add a ~350 - 500watt wheel motor kit on his bike, along with an A123 pack, for about 15-20 mile range unassisted at maybe 40km/h?

It needs to be a rear hub motor, and have 8 speed cassette with disc brake mounting. I would like for it to be a 36V unit, as that would allow me to run a nice 12S A123 pack.

I have looked around for kits, some are what I'm looking for, but are front only hubs, then some are rear, but no disc brake....etc. Just trying to find the right one!

He will spend $400 for a kit NOT including batteries.

http://ampedbikes.com/kits.html

Excellent deal. Great service. Highly recommended.

I'm (afaik) running the same motor and my controller is limited to 20a, altough I am running much more voltage.

[zeropointbug]

I'd rather buy from a Canadian supplier, and there are a couple that I know of in Vancouver so I may as well keep it close. I am pretty sure on this Nine Continental kit w/cycle analyst, $450 CAD. Seems pretty solid of a kit to me. Plus 48 A123 cells (Tech Ex eBay supplier) for $290 shipped for ~340Wh for up to ~20 miles range at 40km/h?

http://www.ebikes.ca/store/photos/NC26R_Fast.jpg

$750 for total system cost, plus a little custom work I might do to make a nice sealed aluminum battery box.

Do the calcs I made look right to you?