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I was referring to the Bafang configuration tool for the Bafang Ultra 620 motor with UART controller. That tool has the torque tab. With the advice from Gionnirocket, I got the "write" problem solved and the program working again. I don't know about the BESST program.

OK great, thanks! I'll try that and see what happens.

Thank you but it doesn't let me save the file. The save button acts like it works but nothing happens when I click on it.

I'm trying to adjust some parameters of the Ultra motor but I can only read the flash or individual tabs. It reads successfully but then the write (and read) buttons do not function after that. It worked fine previously, so something happened. I've tried reloading and disconnecting the cable...

I bought the same controller from GBK in 48V. It only turns on and shows a communication error 30 message. I can't get past that error message so I ordered the Bafang C961 calibration display. I hope that solves the problem.

Ok thanks. I just tried to install that driver but keep getting a "Driver Install Failure" message with no other information.

lol thanks! I think I have one of those out in the shed.

Thanks for that info. I have confirmed the port on the laptop and PC. I understand about using caps and the port is correct and recognized. The device manager also shows the correct Port. I have to manually enter the Port format (COM3) every time I open the program and if the wrong port is...

I was using the Bafang configuration software (Controllerst_torque.exe) on my Ultra M620 with a Windows 10 laptop and it worked fine. I upgraded the laptop to Windows 11 and now when I try to connect to the Port, the Bandrate continuously cycles from 1200 to 115200. I thought it might be a...

Whoops.... I guess I've seen so many different hacks for so many things that didn't get the joke. :) I want that magic magnet lol.

Hi Gionnirocket, Can you please post more information about how you changed the throttle magnet to increase your top speed? I have a spare throttle that I'd like to try your method on. Thanks.

Does anyone know where to find a schematic diagram of the Bafang Ultra M620 controller? I have searched with no luck, and also contacted Bafang but they did not reply to my request. My M620 controller failed/burnt at this location:

Does anyone know where I can find a schematic diagram for the Bafang M620 controller?

I don't know if this will work for you but I've been running this Eunorau 27.5x3" fatbike wheelset with no problems. It was simple to install and inexpensive too. https://eunorau-ebike.com/products/27-5-3-wheel-set-for-specter-s They also sell this wheelset...

I swapped my 26x4 fat tire wheelset for these 27.5x3 wheels from Eunorau. They are inexpensive and much lighter than the fat wheelset. The conversion was easy and I added an 11-36t cassette, brake rotors, and rear wheel magnet to them so I can change back quickly to the fat wheels any time. I...

The stem risers allow adjustable bar height by the shim stacks. To get the stem clamping bolts tight, make sure to use anti-seize sparingly on the bolt threads to prevent binding/galling.

The stem risers are not adjustable but come in several lengths. If you use one of those you can likely continue to use the original handlebar stem. I have stem risers on both or my ebikes and they work fine.There are adjustable bar stems.

I just saw this video on the Specter S from Area 13 Ebikes.

I was trying to figure things out while riding yesterday and it ended up very badly. When I first turned the Eggrider on there was no throttle response or PAS levels. Nothing worked on the display until I opened the phone app. The app opened with an error message saying it could not connect to...