Quote:
Originally Posted by BagofSkill
Ah, You will probably find with wheels on the noise comes back while on the car stand. It's to do with the CVD not being true CVD's so when you move them to a significant angle the wheel, while rotating tends to rock slightly faster then slower during it's rotation. When the whells on it's own momentum cause the CVD to hit both ends of the backlash causeing the thrup-ing noise.
It's somewhat normal, although not healthy to put the car on the stand and do it just for fun!
You should find that there's almost no noise on the track until you're using full steering lock.
Most TC's at least have this to some degree- it's why Xray brought out their ECS driveshafts, but most people agree that in terms of laptime, on the Schu at least, it's not an real issue.
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This sounds similar to something I've been trying to figure out on my CAT Sx. I had kind of given up on it until I saw this post. On the stand, at about 80% to full lock in either direction there is a heavy vibration when the drivetrain is turning. It only happens when the wheels are installed. Take the wheels off and it's nice and smooth. The only thing I can figure out is the extra mass of the wheels and tires accentuate the movement of whatever is out of whack and cause the shaking. I've checked everything in the front end but never figured it out. The CVD's do rock a little approaching full lock, so what the last post says seems to make sense, and if that's the case, then I dont think there's a easy fix. Does suck though.