How does a Ujoint go bad?
Thread Starter
Burning Brakes
Joined: Mar 2011
Posts: 969
Likes: 1
From: NJ
How does a Ujoint go bad?
New non-greasable Spicers from Dannys Driveshafts. Have around 200 miles on them of flawless, quiet driving. Went to a car show yesterday, then an evening cruise, no problems. I back the car out of the garage this morning to hear clunk, clunk, clunk, clunk. Every time a clunk, it feels like the car has a hard time getting passed it and continuing to roll.
Defective Ujoint from the start?
Person who installed them messed it up?
Can over tightened U clamps squeeze the ujoint caps too much and cause failure?
But how can you go from good to bad overnight? Seize overnight?
Defective Ujoint from the start?
Person who installed them messed it up?
Can over tightened U clamps squeeze the ujoint caps too much and cause failure?
But how can you go from good to bad overnight? Seize overnight?
Last edited by rafalc; Oct 6, 2013 at 10:23 AM.
Thread Starter
Burning Brakes
Joined: Mar 2011
Posts: 969
Likes: 1
From: NJ
Good news is that I jumped to conclusion too soon, its not the ujoint. But can you F'n believe this.... seriously....
Balancing weights came lose. 1 small square got wedged into the cross section of the rotor and was hitting the brake pad sliding pin making the clunking sounds.
Both rear wheels had none of the weights left on them. Front wheels still got all of them stuck on. Taking the rears to STS tomorrow to complain and might decide to take the fronts back just in case as well.
Balancing weights came lose. 1 small square got wedged into the cross section of the rotor and was hitting the brake pad sliding pin making the clunking sounds.
Both rear wheels had none of the weights left on them. Front wheels still got all of them stuck on. Taking the rears to STS tomorrow to complain and might decide to take the fronts back just in case as well.
Last edited by rafalc; Oct 6, 2013 at 07:16 PM.
Thread Starter
Burning Brakes
Joined: Mar 2011
Posts: 969
Likes: 1
From: NJ
Its strange as the centripetal force from the wheel spinning actually pushes the weights towards the wheel, not away. Maybe heat affected the adhesive..... no idea.
Thread Starter
Burning Brakes
Joined: Mar 2011
Posts: 969
Likes: 1
From: NJ
I will put some HVAC tape over them just in case.....
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Melting Slicks
Joined: Jul 2010
Posts: 2,503
Likes: 33
From: McGrady NC
St. Jude Donor '15-'16
If the surface was flat in relation to the center then centrifugal force would hold the weight in place while the wheel was spinning. As it is, the weight is trying to find the sweet spot that is aligned with with the rotational center. So, it keeps creeping across the wheel until the adhesive releases. Good adhesive on a clean wheel with a flat surface matters a bunch!
Team Owner
Joined: Jul 1999
Posts: 65,492
Likes: 230
From: Orange Park Florida
For years now, all stick on weights on any vehicle of mine, make that mainly the vette, have been cleaned around the area, and RTV put all around the weight, to seal it on but good, all that double sided stick tape is not worth much, just like on the good old stick on bubble mirrors, they have to be surrounded with a bead of black RTV otherwise they tend to dry out and fall off....
