user82961

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• What battery for a 350W mid-motor

  in Current Projects • 7 years, 1 month

  

  thanks for your promt response slothy. The smaller battery should hopefully be fine then. Cheers

• What battery for a 350W mid-motor

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• What battery for a 350W mid-motor

  in Current Projects • 7 years, 1 month

  

  ADVICE NEEDED

  Hi my daily commute is a fairly short 16km trip.

  I want to know what is the smallest battery I can get away with for my 350W mid-drive motor (15ah TSDZ2 motor)? I have seen a 36v 6.8Ah bottle battery which is a nice compact size but I want to know if this would suffice for my needs? If so what sort of average range do you think i could get? The terrain is fairly flat and I would want to go 15-20mph max. I weight about 100kgs. I may plan to only use the motor one one leg of my commute (8kms).

  The other alternative is to get a 36v 10.5ah battery but this is substantially larger and may be far too large for my actual needs.

  Any help greatly appreciated

  Thanks in advance.

• fixie/single speed electric bike build

  in Current Projects • 7 years, 1 month

  

  Not a problem. I will be getting the 250w version.

• fixie/single speed electric bike build

  in Current Projects • 7 years, 1 month

  

  Hi ExtraSilver. I'm think of doing your exact build on my single speed bike in London.

  Couple of questions:
  -What gearing ratio do you recommend? On my bike setup i currently have 47t/17t which I think might be too high a gear for the TSDZ2 motor. I understand it comes with the stock 42t crank but I think this is going to be too low for my desired top-end. What gearing ratio has worked best for you?
  -I'm thinking of installing a throttle at a later date to make thing even easier but I'm worried about the motor struggling from a start if using a throttle.

  Any experience on this set up would be really appreciated.

  Thanks