Hi, bad news for axle 120mm TSDZ2. My 3rd axle just broke, always on the right side. I bought the 500w TSDZ2 motor via ebird (Aliexpress) already assembled with 120mm axle a couple of Years ago. The original axle worked for about 1500 km, the 2nd and the 3rd about 1000 km each. I weight 76kg and I use the fat bike mainly for commuting, never for jumping. Each time I contacted ebird (bit difficult) they kindly provided the first time the axle for 25 usd with free shipping, and the 2nd time axle and shipping free. Also for the last axle, they let me waited a while (couple of months) for having an 'improved axle'. When received it looked exactly as the previous ones, same grooves size and same weight (with a precision balance...) In addition, as someone did a test on this forum, I welded both grooves (10 usd), hoping it will last bit longer... but no way. The only difference in those 3 axles is the deep of the hole, in the first axle it was deeper, the last 2 axle have less deep hole, but as mentioned ,did not change the overall life of them.
I also understand that those axle 100 and 120 mm are third party, so that we should not blame Tongsheng, but it will be good if Tongsheng could produce those longer axles, as their regular axle do not seems to have this big issue.
I was thinking to replace the TSDZ2 with the Bafang 1000w 120mm HD, but having installed it on a fat bike of a friend and having tested hard for 80 km, I must say that I still prefer the feeling of TSDZ2. The Bafang is a beast and much more strong, but I miss the torque sensor too much. Will write to ebird for having another axle now... althought I doubt it will last longer...
