View Full Version : Pivot ball ?? It's not popping out, but...
09-10-2009, 04:39 PM
Ok I was at the track today, it took some pretty hard hits. I noticed it was pulling really hard. When I looked at it the lower pivot ball unscrewed like 3 or 4 threads throwing the alignment way off. I screwed it back in and after a couple of more hard hits samething.
I was thinking of putting plummers thread tape on it to see if that would help. I don't get it. I've never had one pop out, but unscrew.
What do you guys think. I'm using the stock plastic A-arms.
09-10-2009, 05:28 PM
Plumber's tape would probably work. I bet the screw just wiggled (or slammed ^_^ ) around in there enough to where the plastic side isn't as tight as it used to be. I have been noticing my pivot balls themselves have a lot of play. My camber adjusment screws are tight, but the pivot ball has wiggled around (or slammed :lol: ) enough to make it not fit tight.
EDIT: I'd look at some alum. A-arms maybe?
09-10-2009, 06:45 PM
Maybe it's not in enough? Mine did the same thing, I just screwed it in all the way, then out a couple of spins and it's fine now. But then again, I've only used my cars maybe 3 times this year.
09-10-2009, 06:59 PM
That is what I thought with mine too and realized that the screw was pushing through the inside of the a-arm.
09-10-2009, 07:41 PM
Just use some blue thread lock !
09-10-2009, 08:01 PM
Ok. I have it figured out. After the second time it did it the a-arm is broke. So I will be ordering a set.
As for having the ball out to far. I had it out 2 threads so that cant be.
The cross over at the track is really making my truck have owweees.
09-11-2009, 02:04 AM
Unscrew it all the way and use a small drop or two of CA glue on the pivot ball threads and then screw it back in. I have the same problem with the suspension pins on my slash and the CA glue trick works great.
The only problem I'd see with blue loctite, it may adhear too strong to the plastic threads resulting in pulling them out of the a arm if you need to remove the pivot ball.
With the CA glue it dries hard enough to hold the screw in, but when you take it out the glue just breaks apart into little pieces not harming the plastic threads.
09-11-2009, 10:02 AM
Have the same thing happening with both my Revos. A small set screw installed into the top of the top arm and bottom of the bottom arm fixes the problem 100%. Get your camber where you want it, tighten the setscrew down, done.
09-11-2009, 12:11 PM
Good idea with the set screw and CA glue. I was affraid of the loctite because of the plastic threads. I think that's what broke the a arm is I didn't notice the threads coming out at first, so it put extra stress on the arm.
Thanks for the info.
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