A few Tongsheng TSDZ2 questions

I'm planning to buy a Tongsheng TSDZ2 kit to turn my bike into an e-bike, however, i've a few doubts, hopefully you can help me with that :

1) From what i've read, in general the blue plastic gear in every TSDZ2 will break and needs to be replaced by a metal one https://nl.aliexpress.com/store/pro...own-tube-10Ah-11-6Ah/3664017_32966575338.html. I'm wondering if there is already a version of the TSDZ2 engine that already has this metal gear? And maybe also other improvements.

2) My plan is to use my custom e-bike every day (home-work), is the TSDZ2 suitable for that, or is it to fragile?

3) I'm planning to buy the TSDZ2 48V750W engine, is 48V the right choice or is the 36V variant better?
https://nl.aliexpress.com/item/Duit...410.html?spm=a2g0s.8937460.0.0.720d2e0ed8mJbV

4) To feed the engine I've the "Hailong E-Bike Batterij 48v 17.5Ah" in mind. Is this a good choice? + i've no idea which connector I should have to connect the battery to the engine, which one should i have for the TSDZ2?
https://nl.aliexpress.com/item/Grat..._expid=9acef56e-b5ab-40bc-b012-7c6edc25728f-3

There is already a very lengthy thread about the TSDZ2 where you can ask you questions better:
https://endless-sphere.com/forums/viewtopic.php?f=28&t=79788

I just did a build with one of these. I can't speak to durability of the blue drive gear yet but if you are concerned these guys will sell you a kit with the metal gear installed for an upcharge. https://www.eco-ebike.com/ I got the standard plastic blue gear in mine but also ordered a metal gear to have around if/when the blue gear fails. I can't tell you whether it is strong enough to be a daily driver either, nor do I plan to use mine that way.

As for connectors, I am using the XT60s (#4 in your picture). The motor in my kit came with basic bullet plugs (#3) on the main power wires. I just cut them off and soldered up a male XT60. Also installed female XT60s on my batteries. You could also use XT90s (#5) but they are probably overkill for this kit.

I've been using the TSDZ2 for a few months so I can't speak for the long-term reliability but in general I'm really happy with it - and haven't had any issues. I use it to get myself, and my 2 kids in a trailer up and down the hills around here - nothing too serious, but works well.

I've ordered a brass gear as a back-up should my blue one strip.

I am about to 'flash' the firmware to unlock the amps (I have 48v 500w one and it is restricted to 15a and can't be tweaked via display).

As mentioned by previous poster eco-bike seem to be the experts on the TSDZ2 so maybe talk to them about your options. They will also tweak the firmware for you when you order.

My motor also came with #3 connectors from your list and by chance my battery did too!

Strider said:

I'm planning to buy a Tongsheng TSDZ2 kit to turn my bike into an e-bike, however, i've a few doubts, hopefully you can help me with that :

1) From what i've read, in general the blue plastic gear in every TSDZ2 will break and needs to be replaced by a metal one https://nl.aliexpress.com/store/pro...own-tube-10Ah-11-6Ah/3664017_32966575338.html. I'm wondering if there is already a version of the TSDZ2 engine that already has this metal gear? And maybe also other improvements.

2) My plan is to use my custom e-bike every day (home-work), is the TSDZ2 suitable for that, or is it to fragile?

3) I'm planning to buy the TSDZ2 48V750W engine, is 48V the right choice or is the 36V variant better?
https://nl.aliexpress.com/item/Duit...410.html?spm=a2g0s.8937460.0.0.720d2e0ed8mJbV

4) To feed the engine I've the "Hailong E-Bike Batterij 48v 17.5Ah" in mind. Is this a good choice? + i've no idea which connector I should have to connect the battery to the engine, which one should i have for the TSDZ2?
https://nl.aliexpress.com/item/Grat..._expid=9acef56e-b5ab-40bc-b012-7c6edc25728f-3

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I have this motor for 2 months and 650km so far and still with the blue gear. I would say for commuting to work it's reliable if you put it on a solid frame, and make sure you take your time when you mount it so that it's perfectly greased (crank arms to axle + pedals and the contacts with the frame on the bottom bracket). Otherwise you will hear some noises and it could be annoying / damaging your frame).
I have the 36v 350w coaster brake version and it is enough power for me, I don't want to more power in a city it can be dangerous... I could hit 45km/h in the countryside but pedaling quite fast. Otherwise you can cruise at 35kmh without sweating on turbo mode.

The connectors for the motor are #3 on your picture. I personally cut them and the battery one to resolder some XT60 connectors (the yellow square) as I find it easier and more reliable to connect and disconnect the battery regularly for recharge.

One bad thing though. It is quite noisy...compared to other mid drives. But as long as it's reliable and cheap and easily repairable, I'm happy with it.

Interesting. I haven't compared mine to other brands but I'd say my TSDZ2 is dead quiet, nothing more than normal bike drivetrain sounds. Good to hear the blue gear is holding up to the mileage.

el_proletario said:

One bad thing though. It is quite noisy...compared to other mid drives. But as long as it's reliable and cheap and easily repairable, I'm happy with it.

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