Bafang build....

[jetstuff]

Hello all , I'm new to EMTB, starting to put together a Bafang 750 with a Trek Roscoe frame. I was wondering what's needed in the drivetrain department, comes with standard 44T front sprocket on the motor. Looking at the SRAM NX Eagle 11-50T rear.....suitable? Or can I get away with less teeth at the rear? OR can I use the Eagle cranks and (smaller) 32T chain ring directly on the Bafang..... THANKS!

 

[khorn]

This is my setup on my commuter, it works perfectly and btw 44 is a bit big as you will end up with a top speed above 60 kmh.

Karsten

 

[jetstuff]

This is my setup on my commuter, it works perfectly and btw 44 is a bit big as you will end up with a top speed above 60 kmh.

Karsten View attachment 27594

Thanks, so what is your setup?! + I'm building an off roadMTB.

 

[patdam]

It is possible to instal BBS on press fit frame, done in 2015 and still working (google translate).
lathe and milling machine required.

Cyclurba, le vélo utile

 

[Doug Stampfer]

I've got a press fit BB & am thinking of using this Lekkie BB86/92 Bafang Adapter – Lekkie
Also the width of my BB is 93mm (roughly) so I think I would have to go to the BBshd which bumps the price up.

 

[patdam]

The problem is that you need to use BBS built for fat bike with larger crank arms offset. If you agree that, you can keep press fit and use this adapter.
For my part i had knees pain with classic BBS for 73 mm bottom bracket, so with 100 it isn't possible