Tongsheng TSDZ2B 36v 250w + OSF -> 48v?

[9cx88078b8907euorhjl]

Hi, is it possible using TSDZ2B 36v 250w with 48v battery instead after flashing OSF?

I read that the voltage/power limits are set by software, and that the controller hardware is the same. Except possibly the motor itself.

Would rather not have to open it, I have seen similar questions answered but very vaguely and not from firsthand experience.

Has anyone done this?

 

[docw009]

Yeah, you can do it. I set my 48V motor to run on 36V. Didb't care for it.

 

[gromike]

Yes, but that's just from what I've read here. No to 52v. The controller's cut out voltages would need changing.

 

[9cx88078b8907euorhjl]

Need a clear answer and can't find it anywhere, ideally first-hand experience.

From what I've read, the hardware for the 36/48v motor controllers are the same, just the voltage limtis are changed in the firmware. With OSF, can 36v controller run at 48v?

 

[marvin78]

Yes. The motor windings are different for the 36v and 48v but the only 'disadvantage' you'll have is a higher cadence support without needing field weakening.

No first hand experience, but I contemplated getting the 36v motor from a second hand unit for quite some time, so not to run into the upper cadence support limit as quickly. Decided I'm more then happy with current performance, but because of the advice I was given at the time I know it's possible.

I'm sure you'll get more replies from people who will be able to tell you the details from first hand.

 

[9cx88078b8907euorhjl]

Yes. The motor windings are different for the 36v and 48v but the only 'disadvantage' you'll have is a higher cadence support without needing field weakening.

No first hand experience, but I contemplated getting the 36v motor from a second hand unit for quite some time, so not to run into the upper cadence support limit as quickly. Decided I'm more then happy with current performance, but because of the advice I was given at the time I know it's possible.

I'm sure you'll get more replies from people who will be able to tell you the details from first hand.

Thanks a lot for your reply! Yeah the motor would be different. You meant you were going to swap out a 48v for 36v motor?

 

[marvin78]

Yes, so I could get a higher cadence. I'm now using field weakening on the original 48v motor, and this has removed some off the 'wall' feeling at higher rpm's ( not much really, but some ). But I feel my battery drain has gone up overall, pretty sure it's lowering efficiency of the motor.

When you pair the 36v motor with 48v battery in osf you need to correctly set the battery voltages manually, and set an appropriate max amp draw limit ( I think they advice something like 13A or 14A with the 36v motor ). And lower the max. acceleration for instance.


You could try reading the manual for yourself

TSDZ2-Smart-EBike-1/manuals/EN-Parameter_configurator_guide-TSDZ2-v20.1C.2-2.pdf at master · emmebrusa/TSDZ2-Smart-EBike-1

TSDZ2 Open Source Firmware adapted to VLCD5-VLCD6-XH18 displays - emmebrusa/TSDZ2-Smart-EBike-1

github.com