A great idea, fine operation, good software, reliable electronics and a crappy mechanical design. This is the Tongsheng TSDZ2. A little more effort should have been invested by the manufacturer to produce a world class product.
This video will show you how to prevent your TSDZ2 midengine centre axle from breaking.
If you liked the video, please subscribe.
0:0 The broken axle
0:34 1.method: adding an extra bearing
4:44 2.method: new axle, without circlip grooves