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Old 08-13-2011, 07:19 AM   #1
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Default Adjusting suspension rebound

Can you guys help me get my rc8b suspension to rebound. I have moved the shocks to the lowest setting, screwed the stop screws all the way in.and tightened the springs all the way on the shocks.also tightened the sway bar all the way. If you push car down the suspension sags and stays there. I want it to bounce so to speak. Thank you
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Old 08-13-2011, 07:22 AM   #2
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Take the shocks off yr car. Remove the springs from the shocks. Try pushing the shock shaft upwards. Do you get any rebound?
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Old 08-13-2011, 07:23 AM   #3
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What weight shock oil are you using?
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Old 08-13-2011, 07:31 AM   #4
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The car is brand new, bout a month old. Took shocks off to make sure they were full. And they were. Yes the did rebound. I'm using 25wt shock oil, which is what came with the car. When pushing car down it like frowns, maybe like the suspension pins are to tight. Is this possible?
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Old 08-13-2011, 07:32 AM   #5
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Sorry it groans not frowns
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Old 08-13-2011, 07:34 AM   #6
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If the shocks can rebound after being taken off the car, it's most likely the car that has a problem. Like u said, the hinge pins. Check for any binding. 25wt also seems a little thin.
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Old 08-13-2011, 07:34 AM   #7
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Quote:
Originally Posted by Burgrc8b View Post
The car is brand new, bout a month old. Took shocks off to make sure they were full. And they were. Yes the did rebound. I'm using 25wt shock oil, which is what came with the car. When pushing car down it like frowns, maybe like the suspension pins are to tight. Is this possible?
Take the shocks off and make sure everything is moving nice and easy,and then make sure the shocks are also when mounted.
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Old 08-13-2011, 07:38 AM   #8
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Give it a shot. Should I lightly sand the holes and pins and then lube them ?
What is a good medium shock oil? Also what is a good medium diff fluid. Cause if the shock oil is thin then the diff fluid prob is too?
Thanks as always boys
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Old 08-13-2011, 08:12 AM   #9
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Quote:
Originally Posted by Burgrc8b View Post
Give it a shot. Should I lightly sand the holes and pins and then lube them ?
What is a good medium shock oil? Also what is a good medium diff fluid. Cause if the shock oil is thin then the diff fluid prob is too?
Thanks as always boys
Without the shocks on tue suspension arms should move up and down freely. If not most likely the holes in the arms where the hinge pins go need to be framed out. Buy an arm reamer that is the correct size and run it through the holes until the pins rotate smoothly. If you want to lubricate them you need to use a dry type lube.

Measure the diameter of your hinge pins and then but the correct size arm reamer. Here's a link to one that's for 3.5mm

http://www.amainhobbies.com/product_...rm-Reamer-35mm
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Old 08-13-2011, 08:20 AM   #10
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Quote:
Originally Posted by Burgrc8b View Post
The car is brand new, bout a month old. Took shocks off to make sure they were full. And they were. Yes the did rebound. I'm using 25wt shock oil, which is what came with the car. When pushing car down it like frowns, maybe like the suspension pins are to tight. Is this possible?
Quote:
Originally Posted by Burgrc8b View Post
Sorry it groans not frowns
If the car is groaning / squeeking what ever you want to call it then the plastic needs reemed out. Full of dust and dirt keeping things from working like it should.. I was amazed the first time I reemed the hole my hinge pins went in.. Car was like night and day from one qaulifier to the next..
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Old 08-13-2011, 08:28 AM   #11
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+ YouTube Video
ERROR: If you can see this, then YouTube is down or you don't have Flash installed.
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Old 08-13-2011, 03:55 PM   #12
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You may have the shocks on backwards. If the caps are on the mount
the wrong way they will rub the towers. Take the upper mount off rotate
the cap 180deg then remount them. Bleed holes face inwards toward
the towers.

Last edited by JsK; 08-13-2011 at 05:27 PM.
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Old 08-13-2011, 04:29 PM   #13
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I noticed you said you tightened the sway bars. They need to be loose.
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Old 08-13-2011, 05:14 PM   #14
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It was the shock mount. I had the bushings facing out. It has to be inside. Like nite and day now. Thank you , thank you, thank you
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Old 08-13-2011, 05:25 PM   #15
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Quote:
Originally Posted by Burgrc8b View Post
It was the shock mount. I had the bushings facing out. It has to be inside. Like nite and day now. Thank you , thank you, thank you
Ask me how I knew
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