Motors dimension for wheel building

[cwah]

ok thanks for the correction.

4.75mm off-set to the center of the hub is to cater for the freewheel? And it should be the same number for any bike?

Or shall I place the motor to the bike and measure distance to bike center before ordering spokes?

 

[cwah]

Ok I'm almost there, here's the calculator:

I'm thinking to get these BMX spokes with 1X pattern at 184mm:
http://www.ebay.co.uk/itm/36-Halo-BMX-Spokes-Black-or-Silver-Stainless-with-Nipples-/111215652834?pt=UK_sportsleisure_cycling_bikeparts_SR&var=&hash=item19e4f82fe2

Everything's good and fine?

 

[Deleted member 4366]

14g might be a bit thin for a BPM motor. I've mostly used 13g - sometimes 12g. The problem is that you can't find them on Ebay. You have to get them from a spoke maker and then they become expensive.

BMSBattery have 12g in 184mm, but you have to order something else to get the shipping cost down. 40 spokes = $8 plus postage.

 

[cwah]

OK thanks, I'm checking with bmsbattery then