UPDATE (June 24, 2012)!!
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The upper arm has developed a lot of slack over a short time. When the RC car is placed on the ground it it will have too much negative camber. If you grab the wheel you can move it back and forth. Basically the rod ends are wearing out, causing the hole where the balls are to enlarge.
So I dug though my bag of 1/8 parts and found a pair of rear upper arms from a CEN Matrix buggy.
Here are the part number of this items I used:
- 7.8 Ball - GS016
- Turnbuckles 8x56 - MX049
- Ball End B7.80 - GS074
Or you can get a set on ebay for $10 shipped. Since I only have one set I bought another set on ebay for the front. I also bought a bag of Ball End B7.80 - GS074 just in case the ones I have wear out too. I am hopping the larger ball will last longer.
Here is a picture with the stock upper arms
And a picture of the CEN Matrix upper arms
Here is a picture of the stock and CEN Matrix upper arms. Below that are the 2 piece stock spacer and the custom 1 piece I made.
Stock spacer
Custom spacer installed. I had to make new spacers because the stock 2 piece is too thick.
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