XRAY - Model racing cars

Hello, just bought an xb8e to test, compare to my mugen.

First race yesterday with it. Happy with how it works (jump, drive).

But in the 2nd A main, the ball bearing of the rear pinion explode. Just after 5 packs. (6 minutes packs)

So i loose the race, must rebuild the car by changing the bearings, but i broke the diff case too.

How can we say luxury kit with so poor bearings. (4 friends of mine have the same problems with bearings and in France, the forums speak a lot about broken bearings)

The screws are not very good to, but when you broke a bearing, there are chances that the platic component became useless and this is the problem.

So change the bearing, it s not so expensive for xray, but owner will be happy to have bearing that match the rest of the quality of the car.