Originally Posted by
scootinround
Well I have had a Tekno 4x4 for 2 months and finally got to run it for the first time and didn't even make it 3 mins and a 5x11mm bearing completely exploded.....So I am wondering are all these bearings lets say" not so good" or do you think I was the lucky winner of the bad bearing.....Should I look into buying a bearing kit for it...Have any of you had problems with keeping bearing in them...I am hoping it was just one bad one....but now my truck is a hybrid cause all they had was Losi bearings.....
If it was the bearing on the outside if the gearbox, on the diff pinion, the problem is one of assembly. If you squeeze the pinion drive cup tight, then tighten the setscrew, the bearing will bind when heated up during normal use. Then it goes blammo! Make sure there is just the slightest of pay between the bearing and the drive cup before tightening the setscrew down.
Let me guess....it was the rear bearing?