Alex W
10 W
I built my first e-bike a couple of months ago. It is an assist only system (no throttle) basically modeled after the Faraday and using the same front hub (8Fun SYXD01F), a Thun BB, CycleAnalyst V3, and a small motor controller. I sourced my parts through G&O Cycles in Seattle and they were very helpful in understanding what I wanted to build.
I really like the setup because it added very little weight (about 4lbs without the battery) and no drag to the bare bike and so I still often ride the bike with minimal or no assist. In a typical ride the assist helps to accelerate to 21mph where the motor maxes out at 36 volts. I do use the assist on steep hills to maintain a 16-18mph climbing speed where doing the work myself would have me going about 10 mph (Golden Gardens Drive in Seattle is an example of such a hill).
I'm using a AllCell Naked 36V 10AH battery and it is overkill for this bike. Based on my last month's worth of testing my nominal range is 60-70 miles. I'd like to find a 4-5AH battery to have a range of 30 miles. Ideally it would weigh around 3lbs and I'd just store it under my saddle.
I'm aware of the RC Hobby Li-Ion batteries which are quite cheap but not as safe to use and charge as the AllCell Naked. I'm not interested in any batteries which are recommended to be charged in a fireproof box. Who else supplies low capacity high voltage lightweight packs?
I really like the setup because it added very little weight (about 4lbs without the battery) and no drag to the bare bike and so I still often ride the bike with minimal or no assist. In a typical ride the assist helps to accelerate to 21mph where the motor maxes out at 36 volts. I do use the assist on steep hills to maintain a 16-18mph climbing speed where doing the work myself would have me going about 10 mph (Golden Gardens Drive in Seattle is an example of such a hill).
I'm using a AllCell Naked 36V 10AH battery and it is overkill for this bike. Based on my last month's worth of testing my nominal range is 60-70 miles. I'd like to find a 4-5AH battery to have a range of 30 miles. Ideally it would weigh around 3lbs and I'd just store it under my saddle.
I'm aware of the RC Hobby Li-Ion batteries which are quite cheap but not as safe to use and charge as the AllCell Naked. I'm not interested in any batteries which are recommended to be charged in a fireproof box. Who else supplies low capacity high voltage lightweight packs?