Coaster TSDZ2 change from 36V to 48V

[elgubbe]

Hi
I ordered a tsdz2 for coaster brake. I only found it in one place on the whole earth with 48V
Delivered it is marked 36V and connected to the screen with 48V its showing 800W output even though its completely still. I interpret this as it really is a 36V motor that gets confused when connected to 48V. This whole project is for my partner myself I have a normal non-coaster brake system with 48V and its fantastic, I really wanted 48V for my partner as well.

I am going to complain to the company I see now that they have two different info in the text. But I am pretty sure I will have to solve this by myself. So as I understand it I only have two options.

1) change the controller
2) upgrade to a hacked bios

but this leads to some other questions
1) is there even an 48V controller that is compatible with coaster brakes?
2) which bios to get? Is it possible to program it for the coaster brake?


Thanks for suggestions

 

[Aquakitty]

The controllers on both 36v and 48v versions are the same, but the motor winding is different on the 36v version (it's actually a better motor because apparently it allows for faster cadence).

For the voltage issues, you don't need the aftermarket firmware (although it is really great). You can simply change the hex codes. To do this, you need the ST-Link V2 connector, and this guide: https://www.eco-ebike.com/blogs/eco-cycles-instructionals/tsdz2programmingfromscratch

The aftermarket firmware is really great though if you ever want to go that route. For now though you just need the ST-Link V2.

 

[elgubbe]

Many thanks for your very fast reply! Its a relief!!

So a simple update of the set voltage will do it? (update to value 78 which corresponds to 48V)
Is it that when doing changes in the advanced section in the display menu it does not really stick. Because I already updated to 48V in this menu. But I read somewhere that when changing the max Amp it does not stick, could be the same with the voltage then.

 

[Aquakitty]

Many thanks for your very fast reply! Its a relief!!

So a simple update of the set voltage will do it? (update to value 78 which corresponds to 48V)
Is it that when doing changes in the advanced section in the display menu it does not really stick. Because I already updated to 48V in this menu. But I read somewhere that when changing the max Amp it does not stick, could be the same with the voltage then.

Did you disable the write protection? At the link in my post, they have the complete file you can use to overwrite if you have that issue... but I was able to simply change the hex codes after removing write protection.