Infraction Driveshaft wobble

TactTrunkMonkey

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Has any noticed that at high rpm the center rear driveshaft starts to wobble or vibrate out of a smooth rotation? It is very noticeable and using a larger pinion gear makes it much worse. I am afraid that this thing will eventually weaken and break causing major damage to the car or worse to the battery. Any thoughts or solutions?
 

Notorious J

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Jimbobjr

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Drive shafts need to be thicker. If they aren’t perfectly straight they wip and hit your brace. My Kraton does it. I just put the body on and don’t think about it.
The Infraction even being longer the problem is even worse I’m sure. When you run it slow on the bench can you see if the shaft is bent? Did you maybe hit something flexing the body and bottoming out the cups? I imagine when the truck isn’t free wheeling on the bench but running on the street the problem isn’t as bad and may not be a problem at all.
 

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