It is simple your slipper clutch is too tight the slipper is not doing is job of protecting your drivetrain if you fix the driveshaft issue ita going to break something else you need a ton of stress to pop one of the U joins off we are not talking poopy traxxas driveshafts who snap in the pin hole we are talking about the hard rigid plaatic spreding out are you spraying your driveshafts with wd40? Something to consider no to do. I have ran with a tight slipper in my kraton 4s and they still did not poped out the holes are stretched but the driveshaft still works the clutch should be 1.25 turns from fully tight. If you able to do a standing backflip thats a big red flag.
Car is almost a year old still on the original shaftsView attachment 69957
If you have a 3D printer @Camaroboy383 has made a plastic reinforcement for the shafts in the U join of the 3-4s line ask him to send you the file.
Post it on the 3D printer thread too could be handy
How your shafts doing since?
Yeah my slipper is all the way as tight as it’ll go. Can get like 1.5 flips from a dead stop ? but I hear of ppl doin this an it working out just fine. My local hobby shop is who set the clutch all the way tightened. And No I don’t spray them with Wd40, you’re saying I should or I shouldn’t? Thanks for the tips btw. And just bc I don’t know, what does “CVD” stand for when referring to drive shafts?