What Spoke Length to use for yescomusa kit and 29er wheel?

[tomtom123]

I'm using a bafang bpm 2 with 700c wheels on my 29er mountain bike right now. I want to buy a a yescomusa usa kit and try it out but i don't know what spoke length the motor needs to fit a 700c/29er wheel, anyone knows?

I tried ebike.ca spoke calculator, but the results it gives are wrong, i know this cause i tried my bafang with inputted 622mm and it outputted the wrong spoke length. I also tried 622mm with the crystalyte hs series and it outputted 204 for single cross and 230 for doubel cross. but eletricrider has the same motor and when i chose 29er wheel as selection on their site during checkout, they listed that they use 194mm spokes. so i don't trust the accuracy of ebike.ca spoke calculator.

 

[Drunkskunk]

What brand and model rim? Have you measured the ERD? that can change even between model years. Just about every 29er rim is going to use a different size spoke.

 

[alsmith]

It depends on your motor/hub and on your rim (and there has to be an unfeasably large number of different rims), and if you want/need any offset so no one can just tell you. But google is your friend- there are loads of spoke length calculators on google.
You'll need to measure some sizes to enter into your choice of calculator though.

 

[wesnewell]

Go here. Goldenmotor 901 is in the database. Just search for 901. Enter rim data or search for yours and continue.
http://leonard.io/edd/
If you don't know the data see this.
http://leonard.io/edd/howtomeasure