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The Apaches 4.5 and the Jumbo Jims 4.8 had a rubbing chain. But I replaced the rear 4.8 JJ with a 4.4 JJ to avoid chain rub. That worked. Thats only with the 100mm rims. I'm sure that the problem won't occur on 80mm rims.

Tried some other tires today. 27.5x4.5 45NRTH Vanhelga 80mm rims Great tire, feels much more like a mountainbike. Very agile! 26x4.8 Jumbo Jim (26X4.4 rear - no chain rub) 26x4.5 Apache Slicks 100mm - look cool but even with 30psi they feel strange.

Those Apaches look good but they ride like s**t. Put at least 25-30psi in them or you will have extreme self-steer They are also very wide (4.9 on a 100mm rim) Can't shift in to the lowest gear anymore.

I just asked her on messenger. Replied within the hour. As I said she is in the Bafang G510 group: BAFANG G510 / M620 MOTOR GROUP

I send her a copy of this thread trough Messenger. Instant response. Check your Spam folder?

How wide are those Nexties? My chain rubs the tire in the lowest gear. (on 100mm rims)

ZS44/28.6 - ZS56/40

This and other files are available here.

Anna is reliable. Go to the Bafang Ultra Facebook group. Anna is a member there. Send her a message.

I got a Mastodon Pro EXT @140mm but it hits the frame on full lock. Gonna need a crown race spacer.

They also do higher versions if you ask them. I have several 3500W (60A max) and a 4500W (80A max) from Innotrace.

I squeezed 14S5P in the original housing. It is a tight fit and I had to move the on/off button to a different location. No room for the BMS so I placed the BMS on top of the case. In the frame a hole was made for the BMS. Saw a guy that put 70 x 21700 in the frame but that takes a bit more...

I squeezed 70x 21700 cells in mine. Had to open up the frame. Testfit the cells And closed the holes on the side with carbon fibre.

Same as mine:

Yes, X1 controller. They actually delivered me a controller that was set at 4500W (80A) But the battery can't handle that :-)

Hi Jon, great bike. I run 27.5 x 4 and 27.5 x 4.5 on mine. I didn't find an extended lower bearing cup so got a blocklock headset instead to prevent the fork from hitting the frame. Chainring is a 46T Here is a partslist.

Same here! Found this "internal cable routing" handlebar Rotwild Riser Bar AL7075 35mm Rise 740/780mm Made a new wiring harness Looks a lot cleaner!

Correct, they are pretty much bombproof with the X1/Innotrace controller. I have 3 of them. 2 x 3500W and a 4500W version. When they get too hot the controller dials back the max power untill they are cooled down. They are protected against shortcuts and sparking. Chains and cassettes.... that's...

Yes, stock controllers also need calibrating. The hall sensor signals are generated by a magnet on the rotor tip and a hall sensor on the controller. The position of the rotor has to be calibrated in the controller. Apparently it can be done by the Bafang Besst Tool and the correct...