Doesn't sound like a common fault... Screen freezing could be a loss of serial comms but that wouldn't explain the weak assist when using the throttle. Is it also weak if you use walk assist? Not sure what software you're running and so which features you have.First off sorry if this has come up and I couldn't find it. There is a lot to search and i don't really know the correct terms to use to find related issues.
I have a 8 pin vlcd5 with throttle TSDZ2 kit, with about 150km on it.
When riding it one day the assist abruptly stopped working and the Screen Vlcd5 froze with 15km/h on the display and didnt update or respond to button presses.
I power cycled the battery and the screen became responsive again. showing current speed and changing modes etc. The Bike however had no assist through throttle or torque sensor.
after getting it back home I tried doing some troubleshooting With an adapter cable and vlcd6 screen and separate throttle i had on hand.
no change with a separate screen. still displayed speed and switched modes but no assist.
However i did notice that if i have the throttle Engaged and try to roll the bike backwards the motor engages and assisted. however as soon as i let go of the throttle and tried while in motion there was no assist. additionally this assist was very weak, very easy to hold the bike still with one foot lightly on the ground.
This led me to think that the blue gear was shredded and possibly causing issues with the assist being read. However when i disassembled the motor Everything is perfect as far as i can tell. all the gears are in great condition i dont see any discoloration on the controller. I did notice that the blue green and yellow terminals were hard to separate from the motor leads.
Is this a known issue? does anyone have any ideas on how to fix this?
I know very little about brushless motors but to me this almost seems like the hall effect sensors in the motor is not working right.
that or blown FETs on the controller (according to an rc form regarding general purpose brushless motors)
I found some instructions online to test the controller (https://ebikes.ca/documents/BlownMosfets.pdf).Doesn't sound like a common fault... Screen freezing could be a loss of serial comms but that wouldn't explain the weak assist when using the throttle. Is it also weak if you use walk assist? Not sure what software you're running and so which features you have.
Controller doesn't usually get discoloured, the motor does if you've overheated it but to confirm you'd need to take the centre of the motor out to see if the insulation or whatever it is that melts has melted. If that's happened the magnets will have also demagnetized and so the motor is weak.
If the motor isn't cooked - then the most likely is your controller is dodgy... but that's just a guess
If you know what speed it originally ran at unlaoded (offground, etc), then for the same system voltage and throttle amount, it should run faster if the magnets have lost power. (kV increased)Is there a way to check for demagnetization without completely disassembling the motor to look at enamel of the windings?
Street mode is an special mode inside OSF were you can set the speed and power of the motor to be street legal (EU 25km/h, 250Wcontinu).... "street mode"...
Thank you @Elinx. That was concise and helpful.Street mode is an special mode inside OSF were you can set the speed and power of the motor to be street legal (EU 25km/h, 250Wcontinu).
The power setting is discutable because there is a difference in max. Power (what is set there) and continu Power (250W).
The other mode is Off-road mode were you can set the max speed and power what is possible.
1. Vlcd5 is the biggest display and the only one you can get with 6pin or 8pin, all others are 6pin.....
1) ... (VLCD5, VLCD6, XH-18LCD)
2) 8 pin, 6 pin, ...
3) overheating, ...
4) "bearing mod". ...
#3: Ohh, I hadn't come across this image. This clarifies it for me.(Snip)
https://endless-sphere.com/forums/viewtopic.php?f=28&t=79788&start=7600#p1576436
https://endless-sphere.com/sphere/threads/new-tsdz2-torque-sensor-central-motor.79788/post-1576723
Yes, last week the forum is moved and you see this sort of problems if you see them under special conditions.......
N.B. A small problem I experienced with the forum is that some old links don't work anymore.
old style of referral link doesn't work:
This new type of link works:Code:https://endless-sphere.com/forums/viewtopic.php?f=28&t=79788&start=7600#p1576436
Code:https://endless-sphere.com/sphere/threads/new-tsdz2-torque-sensor-central-motor.79788/post-1576723
Unfortunately, this has made it a bit difficult to find some things in this big thread, despite the excellent search function.
Sorry to hear this. So you want to know if it is the display or the controller?...KT-LCD3. ...... got a puff of smoke at that join and now the screen is dead.
Hey Wapous I will have a look when I get home but any chance you have modeled the new plastic cover for the TSDZ2B ?New STEP 3d Cad files for TSDZ2.
Address: TSDZ2_Step_2023 - Google Drive
Attention: Some large files. Gears are with involute profile tooth.
Can be used for calculation.
Thats not good... more wondering if anyone else has damaged their controller due to an issue with the speed sensor. I thought it was fairly low voltage ? although the port can be used to power lights so maybe its a short with the 6V line ?Sorry to hear this. So you want to know if it is the display or the controller?
Pesonally I think it is the controller with a good chance the LCD3 is gone too.
The controller is still replaceable, but the LCD3 has new hardware and couldn't be flashed anymore.
I don't know the complete circuit, but the lightpower could have max. 0.5A (3W)... I thought it was fairly low voltage ? although the port can be used to power lights so maybe its a short with the 6V line ?
Is there a brass gear for the TSDZ2B? All the ones I see on the usual websites appear to have the one-way roller bearings as used in the TSDZ2 OG.
is this B version ? can this blue gear be printed to test if it will work ? i mean if the scale and design is technically correct ?I added a link to an HTML file.
"TSDZ2 Motor Assembly" 10m
This file can be viewed and manipulated in 3D with most internet browsers.
Google Drive: Sign-in
Access Google Drive with a Google account (for personal use) or Google Workspace account (for business use).drive.google.com
thxWith this HTML file you can measure every component in MM. The Blue gear dia is about 0.25mm larger and would do the job.
You can hide any part or component to see inside parts. Each bearing have his description Number for quick order.
This file is used to see and measure.
For production purpose you must refer to my last post with Step files
You'll need to change the actual motor inside the TSDZ2 for the 36v wind version, or max cadence will be only about 70rpm. You can then flash the controller with the 36V firmware. The only difference between models of the TSDZ2 are motor wind and firmware. I doubt you need to limit it to 250W though - check what the battery you have is capable of in terms of current.Hi guys i searched a lot but did not find an answer.
My GF has commuter bike with 36v battery. And i bought TSDZ2-B ver for her moutainbike so she would go on short mtb tours with me. I also bought additional battery mount so she can use the same 36v 15,7ah battery on hers mtb. Problem is that TSDZ2 is 48v and 750W. Is there any way to change this to 36V and 250W? Mind that this is B version. Thank you in advance!