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Hello and welcome to my Tongsheng TSDZ2 forum/message board. The questions and answers below have been gathered from the main TSDZ2 review article over the last few years. I have recently updated and re-published the article and I didn’t want to discard the hundreds of useful Q and A’s posted by readers.
This isn’t a forum in the classic sense, it’s more like a message board where you can post a question and hopefully receive an answer. I have kept it simple by not requiring any kind of registration to post. But, all comments are held in moderation before being approved. This means that it may take up to 24 hrs for your message to be displayed. This is an unfortunate necessity due to the high levels of spam.
Because I am using the native comments feature on this website, there will not be any notifications of replies to posts. You will need to check back periodically.
Forum Topics
Below, I have listed some of the most popular topics discussed. Please keep all questions relevant to the Tongsheng TSDZ2. I will always try and personally answer messages, but occasionally it may relate to a problem I haven’t encountered before.
- Compatibility: e.g. will the TSDZ2 fit a certain type of bicycle
- Installation issues: Problems with the installation process
- Motor faults: A very broad topic covering a multitude of problems
- Programming: Not something I have any experience with but I can point you in the right direction for resources
Everyone is welcome, but please keep the conversation specifically about the Tongsheng TSDZ2 or similar motors like the Bafang. Thanks for reading.
Please scroll down for the forum👇
Hallo,
kennt jemand den Fehlercode E08 am TSDZ2 48V/500W und falls ja, was die Ursache ist?
Vielen Dank Thomas
Hi,
Error code E08 is either a faulty speed sensor or the sensor magnet is misaligned or too far away from the sensor.
Hi, when changing the chain I found that the sprocket on the engine has play. When alternately pressed on opposite sides, the chainring wobbled. I thought that the problem was in the squeezed one-way bearing on which the gearbox gear wheel is pressed. According to the instructions on the Internet, I pressed out the old bearing and replaced it with a new, relatively expensive one (by Stieber Germany for 100 Euro). But that didn’t solve anything, the will is still there, it’s still swaying from side to side. It’s alright?
Hi, It’s normal. I have installed over 30 TSDZ2 motors and they all have a bit of play on the chainring. If you remove the chainring you’ll see a circular rubber bush. Not sure what purpose it serves, possible vibration damping.
Thanks for the reply :). Too bad I didn’t ask before I did the repair. I could have saved 100 Euro :).
You’re welcome👍
Hi, I have a TSDZ2 about 9 mounts old, I’ve had a problem with the motor stopping going up hill, normally when it gets a bit steeper, it won’t restart till i reach the top of the hill. I also have trouble when i stop pedalling on a small hill it stops till i reach the top. It’s a ICE recumbent bike and Iam 74yrs old so it’s not overloaded, can anyone help.
Hi Malcolm,
It’s not a problem I’ve personally encountered but I have heard about this issue from other people. The TSDZ2 doesn’t work well at pedalling cadences much above 80-90 rpm when the assist tapers off steeply. When it stops, you need to switch the motor off, wait a few seconds then power it up again. Make sure your feet aren’t resting on the pedals when you power it up, as this causes an error in the torque sensor calibration. If this doesn’t work It could possibly be a faulty torque sensor or maybe a misaligned speed sensor magnet.
Hi. Thank you for your reply. I have switched of and restarted but no joy. I’ve taken the motor apart, visually it all look ok, wires etc, the only query i would have would be with the magnet, a video off the Torque sensor concept said [ The magnet moves relative to the hall sensor causing a current change in coil B] my sensor doesn’t move and i don’t know how it could.?
Hi all, anyone converted a 2020 Bizango to ebike, thinking of tongsheng motor which I’ve used on a previous conversion (before bike got nicked, but i still have a v.good battery) – terrible issues with chain line on that one which meant only the big gears (i.e. small cogs) were usable – wondering if would be same with Bizango – cheers
I converted one using the Bafang BBSHD, and it worked out fine. This was the model with Shimano Deore 2 x 10 speed (11-36 cassette). Not sure how you’d get on with the Tongsheng. The Bizango has a 73mm bottom bracket, so it should fit. The chainline is usually slightly better on the TSDZ2 if you use the stock 42t chainring.
I’ve converted quite a few Voodoo MTB’s, let me know of you need any more info.
Cheers,
Tony
Hi, I’ve just fitted a tsdz2 to a bike, can’t get it to work at all, battery is fully charged showing 42v on multimeter, vlcd5 display shoes the battery at one bar, checked all the connections and their fine, any ideas ?
I’ve come across a similar problem before, and it was down to a faulty display unit. I could also be a faulty lead running from the display to controller, or possibly a faulty controller. But I would start with the display first.
if you are interested in e-bikes than you should consider this https://www.addmotor.com/products/m-360
bonjour
j’ai un vélo de ville e-lane de chez makadam. moteur 36V/250W (8000 km).
depuis peu, lorsque j’arrête de pédaler, le pédalier tourne dans le vide. je suis obligé de trouver la bonne position du pédalier pour que le pédalier tourne de nouveau. est-ce un problème du capteur de pression?
je n’ai aucune alarme sur l’écran du contrôleur et le moteur fonctionne normalement selon les positions d’assistance.
est-ce que je dois changer tout le bloc moteur ou tenter de le démonter pour voir ce fameux capteur?
merci d’avance de votre aide.
Bonjour,
Cela ressemble au roulement à sens unique (embrayage à cames). Le moteur devra être partiellement démonté. La pièce doit être disponible auprès d’Aliexpress ou de Fasterbikes.eu
I have a TSDZ2 that I installed on an ICE trike. It worked fine for about 5 months but now it does not provide any assist. I opened the case and it does not appear that anything burned, looks okay and no burning smell. I am looking for information on how I could test the motor, controller and potentially the torque sensor with my multimeter? I saw in one of the posts that you sent someone a PDF on how to test a controller using a multimeter, could you send that info to me? Is there any testing I can do on the motor to make sure it is okay such as continuity or voltages at specific points? There are a number of wires connected to screws but I do not know what any of them are for or what voltages they should have under specific conditions. I saw a post the talked about things to look at on the torque convertor and will look at that. Is there anything I can test there? I would really appreciate your help so I can figure out exactly what is malfunctioning and get the correct parts to fix it. This is my first experience with an e assist. I had no problems installing it with the instructions provided. I found the manual for taking it apart and putting it back together but could not find any information on how to test.
hank you!
Hi Leo,
Here is the link to the PDF for checking for blown MOSFETs. I would also check the alignment of the speed sensor and wheel magnet – incorrect alignment or too big/small gap can effect PAS performance. If you can remove the torque sensor and inspect the tube (this can sometimes split), and also the sensor rings (check for cracks). Also, inspect the small circuit board soldered on top of the sensor tube. There are some good resources on the PSW Power website for testing different components on the motor.
Looking at fitting the TongSheng TSDZ2B to my wife’s Trek Rosco 6 10 speed.
Currently has a 28 tooth chain ring. How well would the adaptor work?
Also what Is the durability like for mountain biking, generally gravel trails, mud and occasionally rocks. How water proof is it for riding in the rain and for water crossings where the motor may get more water than general wet riding.
Hi Rob,
The main problem you’ll have when using the adaptor is the chainline. The standard (42t) chainiring is dished in slightly to counter this.
Regarding durability, it seems to be luck of the draw. I’ve done conversions for people who regularly ride off-road without any issues, and others who’ve had problems right off the bat. I recently had a motor back for a blue gear replacement and the motor was very wet inside. The water ingress was so bad, that the blue gear was rusted on solid. But, it had be used as a daily commuter over a typical British winter. I wouldn’t want to be riding through fords and streams. I can’t confirm if the latest ‘B’ version has improved water resistance.
I think as long as you’re comfortable doing occasional maintenance yourself and replacing parts as needed, the TSDZ2 is generally a good motor with excellent performance.
Let me know if you have any more questions.
Cheers,
Tony
Thanks for this review. I too am looking at converting my gravel touring bike with a 250W motor. One issue that I am concerned about is the strength of the motor housing. This will inevitably be subject to the regular impact of sizeable pieces of gravel. At least one local council uses gravel up to 5cm to surface its roads. With the motor hanging below the bottom bracket it will be in the firing line from the front wheel all the time.
Hi Adrian,
I’ve converted quite a few mountain bikes using this motor and haven’t heard of any issues regarding the motor casing getting damaged. The alloy casing is quite thick and it would take quite a severe impact to crack the casing. For peace of mind, it may be worth seeing if you can fabricated a bash guard.
Regards,
Tony