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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👇
Tony, I’m attempting to add a TSDZ2B to a Surly Big Dummy, but have a bit of a quandary on how to attach the motor. The kit instructs attachment via clamp on the chainstays just behind the seat tube. However, the Big Dummy has a solid tube going back from the seat tube. I really don’t want to drill through the steel tube and compromise the integrity of the frame.
In an earlier comment, you mentioned that the Big Dummy is an excellent donor bike and that you’ve converted a few of them. How did you solve this issue?
Thanks for the help,
Theo in Oregon
Hi Theo,
The solution we came up with wasn’t particularly tidy but it did the job. We used a large steel pipe clamp routed around the mounting bracket. With the bracket tightened it held the motor in place. Not the best solution but it did work. I agree with you about drilling a hole. We thought about it at the time and decided against it. Unfortunately I didn’t take photos at the time, but give it a go and see how you get on. You’ll need a clamp with a large diameter, but it needs to be quite narrow to fit.
I hope this helps.
All the best,
Tony
J’ai acheté et installé le moteur Tongsheng tsdz2 /500w/48v et je vous fais part de mon expérience.
Au début, c’est merveilleux, coupleux progressif , à la hauteur des avis élogieux que l’on peut voir…. seulement voilà, après 6 mois d’utilisation et 1000kms il y a un jeu latéral très conséquent ( 1/2cm) sur la périphérie du pédalier …. je change l’axe avec le couplemètre et constate que les roulements flottent sur les portées. Les ajustements combinées à un acier de mauvaise qualité en sont la cause. De plus le roulement de guidage du pédalier a une portée anormalement faible… , 2 mois après l’électronique donne des signes de faiblesse , le courant moteur se limite à 8A (et ce n’est pas le couplemètre) au lieu de 15. Obsolescence programmée ou dérive thermique des composants ? J’ai commandé un nouveau contrôleur . Bref pour moi ce moteur qui n’aura même pas 1 an d’utilisation est un gadget.
HI PLEASE HELP :
I have a 2019 giant roam 0 with this spec:
CranksetFSA V-Drive, 32-44T
Bottom BracketFSA sealed
and looks like with the hollowtech shimano.
would this fit the tongsheng?
thank you!
i am really confused. wold really appreciate.
Hi,
I’ve fitted a Bafang BBSHD to one of these before without any problems. The main problem I can foresee with the Tongsheng, is the limited clearance between the motor axle and housing. It won’t leave enough room for the rear hydraulic brake hose and rear shifter cable. You will need to re-route these. Other than that, it should fit the bottom bracket shell just fine. The 2018 Roam 0 I converted a couple of years back had a Shimano Deore Hollowtech II BB, so I would imagine your is similar.
I hope this helps.
Regards,
Tony
I have been looking for an ebike conversion kit that would be suitable for riding the hills near us. I can climb them with my bikes but the idea of electrical assistance is attractive. The Tongsheng sounds ideal but I’m a little concerned about hearing that they have been discontinued by the manufacturer so how does that affect warranty etc? I was also looking at the Yose Power front hub drive kits but it appears mid drive is the way to go.
Hi Kevin,
It would be worth looking at the Bafang BBS01B, in my experience it’s generally reliable and it is still being manufactured.
Following your advice I purchased the Bafang BBS01B and have fitted it to a 1979 Raleigh Tourer. In the past few days I’ve ridden it nearly 100 miles over the North Downs in the Dover area and its marvelous! In the past I could just about manage the climbs but now the rides are so much more enjoyable. The only mod I made to the supplied kit was to source a smaller 36 tooth chainwheel which I think was a well worthwhile move. Thanks again for your advice.
Hi Kevin,
You’re welcome. Thanks for sharing and I hope you enjoy many more miles.
All the best,
Tony
Hi Tony, many thanks for this article. I have a Vitus Escarpe 2015 as a potential donor bike. I like the Torque sensor mid drive concept of the TongSheng over the pedal assist design of the equivalent Bafang. The BB on my bike is threaded not push fit so I think I am ok but the frame has welded bracket for a chain guide. Will that need to be removed for the motor to fit?
Also do you have any suggestions as to a suitable battery and location? There is not much space in the triangle on this frame. Thanks in advance /Marcus
Hi Marcus,
It depends where the chain guide bracket is located. The main issue with the Tongsheng is limited clearance between the motor housing and BB axle. Regarding battery, your best bet would be a compact bottle battery. I have fitted these in full-suspension frames before and it looks like there should be enough space on the Escarpe.
Another option for battery mounting may be along the flat section of top tube. Some people mount them on the underside of the downtube, but this can cause problems when the forks are compressed under braking. Another option is to have a small battery pack in a frame bag, mounted on the underside of the top tube, or a large saddle bag.
I hope this helps, let me know if you have any more questions.
Cheers,
Tony
Hi Tony, thanks for the practical wisdom here. From the video, I also spotted that the TongSheng has to have some sort of clamp which goes to the bottom of the chain stays. I am guessing this is to ensure the torque sensor has a solid location from which to make its “sensor” work. I presume then that it makes it impossible to fit with a full suspension bike(?). The Bafang didn’t seem to have that requirement as it appears to hold itself with the double clamping nuts around the bb. So the Bafang seems like my only option. Would that be true? Thanks again/ Marcus
Hi Marcus,
The primary function of the clamp (on the TSDZ2) is to prevent the motor from pivoting in the bottom bracket shell. The Bafang uses a ridged steel mounting plate which is meant to bite into the soft alloy of the BB shell and hold the motor in place (although this doesn’t always work in the long term and motors often work loose).
It is possible to fit a Tongsheng on a full suspension MTB, but you will need to find a way of securing the motor. I did this using some steel pipe clamps – it didn’t look particularly pretty but it did the job.
All the best,
Tony
Hi, my bike (state 4130 all road) is a 44t 11 speed. Will this kit work with my bike and are there any options to buy 44T kits?
Hi Nathan,
The Tongsheng will take a standard 110BCD 5-bolt chainring, although this motor doesn’t work great with 11-speed drivetrains due to the drive-side offset. There are sellers on Aliexpress who do a 44t chainring specifically for the Tongsheng – these are ‘dished in’ by a few mm which improves the chainline a little. I’ve ridden a TSDZ2 with 10-speed gearing (11-40 cassette) and it was okay in the higher gears, but used to cog a bit in the lower two gears.
The motor should fit, providing your bike doesn’t have a pressfit bottom bracket. It’s likely you’ll need to re-route the cables on the underside of the BB shell as there’s not enough clearance between the motor axle and housing.
I hope this helps.
Tony
Hi do you know where I can get my cube ice bike with tongsheng tsdz2 system fitted. Plugged in for a diagnostic reset. In the Midlands area. Many thanks Graham.
gracias. tenia pensado comprar el tsdz2 pero estoy leyendo que no disipa bien la temperatura con lo que para el uso extremo en montaña no creo que vaya bien, habria que ponerle el sensor de temperatura y eso es incompatible con el acelerador…. lo veo complicado creo que me rendiré a bafang
Si, eso es correcto. El Tongsheng está bien para escalar colinas moderadas con gradientes menos profundos y no demasiado largo, pero puede sobrecalentarse en subidas largas y empinadas. Si no le importan las leyes, recomendaría el BBS02B 750w, subirá cualquier cosa con facilidad, pero debe vigilar el uso del acelerador, ya que puede hacer que el controlador falle si se usa de manera inapropiada.
Atentamente,
tonio
Hallo Tony,
Ich habe mir gerade den 250 Watt Motor mit Rücktritt Bremse eingebaut.
Er funktioniert einwandfrei, aber es gibt eine Sache die ich nach der ersten Probefahrt als sehr unangenehm empfinde . Wenn ich bei starker Belastung auf die Pedale, also große Kraft aufbringe und dann aufhöre zu treten dreht der Motor noch kurz nach.
Es gibt einen kurzen Ruck zwischen Last und Leerlauf bei Entlastung, der in den Beinen zu spüren ist.
Bei niedriger Belastung tritt das nicht auf.
Kennst du das Problem? Ist das ein Defekt, kann man das einstellen oder ist das normal?
Lg
Marcel
Hallo,
Das ist mir in der Vergangenheit nicht begegnet und klingt für mich nicht richtig. Normalerweise schaltet der TSDZ2-Motor ab, das sofortige Treten stoppt. Ich bin mir nicht sicher, ob dies ein Merkmal der Rücktrittbremsversion ist, da ich noch keine davon gefahren bin. Ich würde den Lieferanten kontaktieren, um zu sehen, was sie sagen.
Grüße,
Toni
Hi Tony!
Thansk for very good website and advices!. I have a question about TSDZ2 motor types. I ordered by my mistake for my mountain bike motor which was intended in foot brake function bike. I understand that foot brake function motor haven’t freewheel because otherwise the foot brake would not work. So when I back pedal in my bike, chain will move. In mountain bike freewheel is in back. So I think that is is not harmful. Do you see any problem that I put foot brake function motor in my mountain bike? Whether the motor is completely similar in other functions?
Sami
Hi Sami,
Yes, the coaster brake version will work just fine, the walk assist will be disabled and you won’t be able to fit a throttle. But apart from that, I don’t see aby problems.
Tony
Pues entonces me compraré un tdsz2 porque quiero ese tipo de asistencia. Me recomiendas algún foro en español donde solucionen problemas de esta marca ? Todo lo que encuentro es sobre bafang.
Buenos días, Tony. Encontré hace poco una Stels Adrenalin de 26″ (la rusa, ya descatalogada) que tenía pocos fallos y estaba casi nueva. Le he montado un TongShen de 48V ,500W, con una bateria de 48V-13Ah y pantallaLVCD-5. Hasta aquí, todo bien. El problema es que no me detecta velocidad. Me ha descargado todo el manual, ajustes, entretenimiento, uso y disfrute de la pantalla (que hace a su vez de controlador). Le he revisado todos los ajustes, cables, empalmes (he probado a cambiar la conexión de las dos que lleva el detector, y sigue sin detectarme velocidad. Siempre marca 00’0, y por tanto no acude en mi ayuda. ¿Te has encontrado con este caso?, ¿Sabes de donde puede venir el problema?. Muchas gracias y un saludo
Hola,
Lo único que puedo sugerir es que el sensor de velocidad está desalineado con el imán de la rueda. Hay una flecha en el sensor que debe alinearse exactamente con el imán cuando pasa. Además, el espacio entre el imán y el sensor debe ser inferior a 5 mm. Si esto no funciona, entonces la falla puede estar en el sensor mismo; estos son bastante baratos de reemplazar. También revisaría los conectores de cableado y los pines dentro de los conectores, ya que a veces pueden dañarse.
Saludos cordiales,
Tony
Bonjour,
J’ai installé ce moteur sur un velo et il fonctionne très bien jusqu’a present.
J’ai ensuite ajouté deux lampes spaninga avant et arriere (pimento et axendo 80lux XE). Lors de la première utilisation aucun problème, et depuis a chaque fois que j’allume les feux j’ai l’assistance qui fonctionne mais une seule fois. Si j’arrête de pédaler et que je recommence elle ne se met plus en route. Je suis obligé d éteindre les phares et immédiatement elle reprend. Je cherche depuis un moment a résoudre ce souci mais je ne trouve pas de solution. J’ai débranché la lampe avant et tout fonctionne parfaitement donc le problème semble venir de celle ci. Auriez vous une idée d’ou pourrait provenir le problème ?.
Merci
Bonjour,
Ce n’est pas un problème que j’ai rencontré auparavant. Il pourrait y avoir un problème avec le câblage provoquant un court-circuit. Je commencerais par changer le câblage et partirais de là. Si le problème persiste, il peut être lié au contrôleur, au faisceau de câblage ou à l’écran. Ces lumières ne devraient pas poser de problème car elles sont conçues pour fonctionner avec un système de vélo électrique 36v.
Bien cordialement, Tony
Bonjour Tony,
Merci cette page bien détaillée sur votre expérience.
J’ai un moteur Tongsheng tsdz2 /750w/48v qui a bien fonctionné pendant 1500 km et un soir (en cote
et de nuit 🙂 plus rien…
Je l’ai acheté chez Pswpower en septembre (aliExpress) je suis en train de faire fonctionner la garantie (enfin ils m’ont demandé de faire le diagnostique pour me renvoyer la pièce défaillante.
Il semblerait que ce soit le moteur ou le contrôleur : en test (mode accélateur sur pont vélo) le moteur bouge d’un cran et passe en erreur (E2 contrôleur court-circuit) .
Avez vous déjà eut ce comportement ?
Question bonus:
Par rapport à ce que j’ai lu sur les autres commentaires sr le TSDZ2 ne devrait plus se vendre ?
Je souhaite équipé le vélo de mon épouse et du coup j’hésite a partir sur un bafang .
Qu’en pensez vous ?
Bien cordialement,
Arnaud.
Bonjour Arnaud,
Je n’ai personnellement jamais rencontré ce problème particulier auparavant. Je soupçonne que la faute est avec le contrôleur. Il est assez simple à remplacer. En ce qui concerne la disponibilité du Tongsheng, il y a eu une action en justice de Bafang concernant un brevet qui a entraîné le retrait du TSDZ2 d’Aliexpress. Bien qu’il soit toujours disponible dans certains magasins Aliexpress – disponible auprès d’eBird qui est un fournisseur de confiance.
J’espère que cela vous aidera, veuillez me faire savoir si un contrôleur de remplacement résout votre problème.
Bien cordialement, Tony