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Old 08-05-2013, 11:55 AM   #1
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Default Tightening up the front end...

I read in post about cutting zip zoc bags for ball joints, but still a bit hazy on how to make them and install them, can someone elaborate a little better and post some pics of them...
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Old 08-05-2013, 12:32 PM   #2
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I could be wrong but I think you just put the plastic between the ball joint and the ball end. Snap down cut away the excess. That will tighten up that joint. Do the same for other loose joint to tighten up slop.
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Old 08-05-2013, 12:34 PM   #3
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I don't have any pics but the concept is pretty easy. Use a hole punch like for paper and punch out some dots from a ziplock type sandwich bag. Place the dot over the ball and snap the cup over the two. Trim off any excess sticking out and you have a tighter joint.

I have not done this as I prefer a better fitting ballcup to start with. For HPI Sprint 2 I use Associated ballcups and for Associated TC4 I use RPM ballcups. they fit tight enough to get the desired result without the hassle.
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Old 08-05-2013, 12:56 PM   #4
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What size RPM ball cups would i need? I see a 4-40 and a 3.5mm.
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Old 08-05-2013, 01:37 PM   #5
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Quote:
Originally Posted by StapledTiger View Post
What size RPM ball cups would i need? I see a 4-40 and a 3.5mm.
measure the ball cups
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Old 08-05-2013, 02:22 PM   #6
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measure the ball cups
no micrometer... But someone out there in the wonderful R/C world can tell me the right size.
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Old 08-05-2013, 02:42 PM   #7
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the size you need is posted in the Sprint 2 Mods thread you've already been given the link to.
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Old 08-05-2013, 07:47 PM   #8
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I use 3M scotch tape between the balls and cups, but I only use them on One End of the turnbuckles, so they won't make my suspension bind and cause the Car to traction roll......
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Old 08-05-2013, 07:50 PM   #9
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I usually put the scotch tape on the End that has the most play.....
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Old 08-05-2013, 07:53 PM   #10
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I wished they could design ballcups with setscrews in them that can help the issue without scarring the ballstuds....
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Old 08-05-2013, 08:32 PM   #11
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Ok, tightened up the front end with zip loc punch-outs, I also did the "G2 pen Spring" trick, But I think I've done it wrong still, Heres a picture of my problem, the wishbone still wants to pop out when i turn, I've stuck the springs in both ends of the wishbone.
Attached Thumbnails
Tightening up the front end...-cam00305.jpg  
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Old 08-05-2013, 09:32 PM   #12
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Quote:
Originally Posted by StapledTiger View Post
Ok, tightened up the front end with zip loc punch-outs, I also did the "G2 pen Spring" trick, But I think I've done it wrong still, Heres a picture of my problem, the wishbone still wants to pop out when i turn, I've stuck the springs in both ends of the wishbone.
Put the spring into the the diff outdrive, not the axle.
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Old 08-05-2013, 09:37 PM   #13
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Quote:
Originally Posted by bertrandsv87 View Post
I wished they could design ballcups with setscrews in them that can help the issue without scarring the ballstuds....
That was done years ago. I just can't recall the manufacture that done this.
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Old 08-05-2013, 09:40 PM   #14
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Quote:
Originally Posted by chasingthepack View Post
measure the ball cups
It is not as easy as you think. How would you measure th he inside of the ballcup?
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Old 08-05-2013, 10:51 PM   #15
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Originally Posted by Stratus Racer View Post
It is not as easy as you think. How would you measure th he inside of the ballcup?
I was thinking a micrometer on the actual ball, but like i said no micrometer.

Took the springs out of the axles.
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