I'm posting this because I have yet to find a dedicated review or thread of the TSDZ2 motor on bikeforums. However, endless-sphere and ****** have some good forums and discussions regarding.

I purchased a TSDZ2 motor and battery from http://recycles-ebike.com. The website isn't the best, but they were quick to reply when I had questions regarding the shipment and tracking. Overall, I received the items I ordered in a timely manner. It took about 1 week to receive the motor and about 3 weeks to receive the battery due to import HAZMAT requirements.

This is the motor I purchased: Tongsheng TSDZ2 Mid Drive Central Motor Conversion ebike Kit,Torque Sensor 48V 500W 42T Chainwheel Electric Bicycle Motor - Re-Cycles E-bikes. Total cost including shipping was $705 for both the motor and battery. There are now some kits on the website that are ~$600.

The bike I converted is a SOMA fabrications double cross, 9-speed, downtube shifters, and cantilever brakes.

I choose the TSDZ2 500W motor. Reasons:

1. The 500W motor is less expensive compared to the 750W motor, albeit nominally.

2. The 500W motor I purchased has no throttle and no special brake levers. I wanted as few inputs as possible to the motor.

3. I wanted a torque sensing motor and not a cadence sensing motor. Ultimately, this is the main reason I choose the TSDZ vice the BBS series of motors.

Good background info on the motor can be found here: https://www.electricbike.com/tsdz2-7...orque-sensing/

I've been riding the converted bike for about 1.5 months almost daily to/from work and running errands. It's been a blast! I don't have too much experience with ebikes, but my converted ebike can easily challenge any that I've test ridden before at 1/2 the price.

The install was easy and took me about 2 hours. The following YouTube video shows the basics: . The only extra tool I needed to purchase was a bottom bracket tool for removing my old crank set . The TSDZ comes standard with the required wrench to install the motor.

The ride is effortless - you turn the crank and motor engages. The harder you push, the more power is provided. For my daily commute, my max speed is around 12-24 MPH. This range is due to the traffic I encounter on the multi-use path. I dial up assist and pedal hard when no one is around...I slow way down when there are people present.

On flat terrain, I can get the bike moving quickly with little effort. When you hit hills, you will need to pedal harder (hence the torque sensor). If you encounter big hills, you'll need to downshift. I know some people complain about this feature, but it isn't an issue for me.

Officially, the motor will cut out at 20 MPH, but you can change the motor settings to allow a larger wheel (in my case 700C) to spin faster by setting it to another wheel size (16 inch). I can hit 24-26 MPH for extended periods.

If you are looking to purchase a mid-drive kit that is effortless to install and use, I would suggest you do some research on the TSDZ2. Pics to follow (if I remember).