cwah
100 MW
Hello there,
I'm almost ready to get my Brompton at 30 mph. Here are the specs:
- 4 lipo 18.5V8AH for a total of 74V8AH
- Lyen controller
- Will receive my Conhismotor mini hub tomorrow: http://conhismotor.com/ProductShow.asp?id=76. I may get another one to see the difference and more toooorque (either a Bafang or MP3)
- Cycle analyst
- Temperature meter to check the motor and controller: http://www.amazon.co.uk/gp/product/B002L0DYC8/ref=oh_o01_s00_i00_details
The actual rear dropout width is 112 mm:
I'm now thinking about extending the dropout to 135 mm so I can add any motor. The bike is steel so that's fine:
I actually extend about 12 mm each side, which doesn't seem a lot.
The problem is more with the forkend that seems quite weak:
I'll have to hacksaw it a bit to put the axle. And get 2 very strong torque arm otherwise I don't think it will be able to handle a 30 mph motor.
Hmm.. Just realized I can't us the axle with nuts to extend the dropout. Only the forkend may move. I think I have to extend it with muscle power..
I'm almost ready to get my Brompton at 30 mph. Here are the specs:
- 4 lipo 18.5V8AH for a total of 74V8AH
- Lyen controller
- Will receive my Conhismotor mini hub tomorrow: http://conhismotor.com/ProductShow.asp?id=76. I may get another one to see the difference and more toooorque (either a Bafang or MP3)
- Cycle analyst
- Temperature meter to check the motor and controller: http://www.amazon.co.uk/gp/product/B002L0DYC8/ref=oh_o01_s00_i00_details
The actual rear dropout width is 112 mm:
I'm now thinking about extending the dropout to 135 mm so I can add any motor. The bike is steel so that's fine:
I actually extend about 12 mm each side, which doesn't seem a lot.
The problem is more with the forkend that seems quite weak:
I'll have to hacksaw it a bit to put the axle. And get 2 very strong torque arm otherwise I don't think it will be able to handle a 30 mph motor.
Hmm.. Just realized I can't us the axle with nuts to extend the dropout. Only the forkend may move. I think I have to extend it with muscle power..