Go Back  R/C Tech Forums > General Forums > Electric On-Road
Running-in ball cups? >

Running-in ball cups?

Running-in ball cups?

Old 05-30-2003, 01:11 PM
  #1  
Tech Elite
Thread Starter
 
fatdoggy's Avatar
 
Join Date: Aug 2001
Location: MD USA
Posts: 3,642
Default Running-in ball cups?

I got some RPM ball cups today and they are rather tight on my original ball ends. Granted I should go and get new ball ends but I can't be stuffed. Is there any way to get them to be freeer?

Thanks.
fatdoggy is offline  
Old 05-30-2003, 01:24 PM
  #2  
Tech Initiate
 
iron chef's Avatar
 
Join Date: Mar 2003
Location: a hundred miles away son
Posts: 36
Default

i think rpm ends work best with associated ballstuds. I had the same problem trying to use losi ballstuds and tried to work them around a little to get them to free up and wound messing them up. Basicly it didnt work, you are probably better off with a little slop than a binding turnbuckle until you can get the right ballstuds.
iron chef is offline  
Old 05-30-2003, 02:43 PM
  #3  
R/C Tech Elite Member
iTrader: (47)
 
Randy Caster's Avatar
 
Join Date: Mar 2003
Location: Costa Mesa, CA
Posts: 16,716
Trader Rating: 47 (100%+)
Default

I used the Losi Titanium ball studs with RPM cups, and it binded very little, I would personally like them tight than sloppy, dont want them to pop off too easilly.
Randy Caster is offline  
Old 05-30-2003, 04:10 PM
  #4  
Tech Adept
 
Join Date: May 2003
Posts: 178
Default

I'd much rather have them a little tight than sloppy. I went exclusively to RPM ball cups on all my HPI cars to tighten up the steering. Use a little powdered graphite as a lubricant. Works great, won't attract dust like a liquid lubricant will. Be careful not to scratch the balls as this will definately affect how smooth they operate.
calvin is offline  
Old 05-30-2003, 04:53 PM
  #5  
Tech Regular
 
HYDRAMATIC99's Avatar
 
Join Date: Dec 2001
Location: Colorado
Posts: 492
Default

You can try to gently squeeze the cup where it snaps on to the ball with a pair of needle nose pliers. This will help free them up some, but don't do it too hard or you will develop too much slop.
HYDRAMATIC99 is offline  
Old 05-30-2003, 07:59 PM
  #6  
Tech Regular
 
Aurra Sing's Avatar
 
Join Date: Aug 2001
Location: Santa Clara, CA, USA
Posts: 462
Default

Pop the ball cup on a ball stud and use a rotary tool to spin the stud in the ball cup for a few seconds. It runs-in ball cups very well.
Aurra Sing is offline  
Old 05-31-2003, 07:56 AM
  #7  
Tech Elite
iTrader: (9)
 
seaball's Avatar
 
Join Date: Sep 2001
Posts: 4,304
Trader Rating: 9 (100%+)
Default

yup, use the dremel. if your balls are aluminum, they will be polished in the process too.
seaball is offline  
Old 05-31-2003, 04:15 PM
  #8  
Tech Elite
Thread Starter
 
fatdoggy's Avatar
 
Join Date: Aug 2001
Location: MD USA
Posts: 3,642
Default

Thanks for the help.

Nice and free now.
fatdoggy is offline  

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.