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    ultra light,40 mph w/fairing,93+mi range,bicycle

    I have gained a great amount of knowledge and insight into electric bicycle building through the members of this site. I built a pedal assist trike and learned much about power to weight and its effects on motor heating and battery pack integrity. It is 72V/60ah,LiFePO4. The subject: I...
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    freewheel gearing 7 or 8 sp 11-32(34)

    looked for a mega range 11-34 , even called shimano , none to be found. Any ideas to increase range with thread on freewheel? take apart +new cogs? freehub is not an option unless a drive cog is attached oppsite from cassette. chainrings are 30-42-55 and there is a 18 to 28 reduction to final...
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    Even Newer 4 to 24-cell Battery Management System (BMS)

    getting 19 X 60 AH TS pack and was considering shunt type system instead of true BMS. Do you have a BMS for such a pack and how much would it cost? also wondering about a charger for such 19 X 4.25v=80.75v, I don't know if they top up this way or not? Will use for lightweight daily driver most...
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    LiFePO4 X 80.75v full -need charger 12-15a

    getting a pack of 19 x 60Ah thundersky's to run a 5305 at max. current of over 100A. Need to find on board charger 12a+ that will finish off this pack to full charge. evcomponents has a watertight model 12a X 72v but it seems this may not top up this pack? Also want to have a controller that...
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    Want to find controller for crystalyte 5305 72v@100A+

    Building a pack of LiFePO4 60AH X 80.75v(full) with crystalyte 5305 and need to have a controller with high amp ability. Looked at alltrax 7234 but they say brushed motors only, kelly 72201 or 72601 seem possible but hear of quality (low amp output and overheating) and return issues. Any ideas...
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    NiCd/NiZn?/LiPO4 cold temp. operation best price 55Ah@72v ??

    I have 2 posts in e-bikes tech. about the design i'm working on, but what I'm asking here is where in the world I find cells or a pack of NiCd, NiZn if available, or LiPO4 with BMS that totals 55Ah@72v nom.,thats about 4KW right?, for the best price.(order contact?) I'm open to any chemistry...
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    best buy for 55Ah@72v NiCd or LiPO4+BMS

    In a reply to my last post (kelly72201...) NiCd or LiPO4's were advised as pack choices. I have looked into these prior to the post but have been unabe to source these at such a high power level (55Ah@72v nom.) and keep the cost inside my budget. Can someone tell me the lowest cost source for...
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    kelly controller 72201 for 5305 max amps?@72v

    I am new to this forum and have been doing much ev research. I am working on a heavy hauling trike that I intend to power by human power and 5305 front hub motor with disk brake. My planed traction pack will be 55Ah@72v nom. w/ AGM's. I am building it to have long range-duration capability...
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