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Old 01-04-2014, 03:49 PM   #1
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Default Is Rubber Buildup On Chassis Bottom Acceptable?

So how much (if any) rubber buildup is acceptable on the bottom of a touring car chassis running indoors on carpet?

Background --- I have been running 17.5 Sedan, USGT and VTA classes indoors on New mid/high grip carpet this winter and have been experiencing varying levels of rubber buildup on the outer edges of the chassis bottom. Even though it does not seem to hurt the performance I often clean this rubber buildup off of the chassis between rounds. Is this extra step necessary? Is rubber buildup something to worry about?

Obviously the chassis edges are rubbing on the track surface and removing rubber from it. Is this slowing the corner speed of my cars down noticeably or is the affect nothing to worry about?

What is everyone's opinion that has run on high grip carpet? Thanks!
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Old 01-04-2014, 04:28 PM   #2
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Quote:
Originally Posted by SS LS1 View Post
So how much (if any) rubber buildup is acceptable on the bottom of a touring car chassis running indoors on carpet?

Background --- I have been running 17.5 Sedan, USGT and VTA classes indoors on New mid/high grip carpet this winter and have been experiencing varying levels of rubber buildup on the outer edges of the chassis bottom. Even though it does not seem to hurt the performance I often clean this rubber buildup off of the chassis between rounds. Is this extra step necessary? Is rubber buildup something to worry about?

Obviously the chassis edges are rubbing on the track surface and removing rubber from it. Is this slowing the corner speed of my cars down noticeably or is the affect nothing to worry about?

What is everyone's opinion that has run on high grip carpet? Thanks!
less than a 1/4 of an inch is acceptable to me, as I do run the same classes as you. to me, this rubbing is telling me the chassis is working. to much chassis rub and your car will be unstable in high speed corners and fly off to the outer wall. in slower corners, the car will stop in mid corner, killing your times.

Where do you race? I have switched over to the RSD chassis on my Xray, and the chassis rub has almost disappeared because of the narrower chassis.
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Old 01-04-2014, 05:27 PM   #3
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I think any chassis building up rubber off the track will slow a car down . some runs might feel feel good butt others dont . making an inconsistant car ( some corners might feel loose and others might feel slow to drivers in put ) and with diffrent track layouts might lead a driver to look for problems that dont really exist .. as little as possible is just right for me ..
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Old 01-05-2014, 02:13 PM   #4
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we were just having this discussion yesterday in the pits at my local track. A little build up is normal and should be cleaned regularly. You could change your setup to not have this happen by raising ride height, stiffer springs, and messing with droop but in the end you probably wouldnt have a car that handled any better (and more than likely worse).

Look at chassis that are run on asphalt and you will see a simliar wear where the chassis touches the pavement.
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