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Old 04-25-2019, 08:14 AM
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Default Body ground clearance

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How much ground clearance do you normally give your touring car body? I've not really been considering this in setting up cars/body pairs in a consistent manner and can't really find much information on the discussion of this topic.
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Old 04-25-2019, 08:17 AM
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As low as i can, without dragging the ground. It's usually 2-3 packs before I get the body "right"
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Old 04-25-2019, 09:22 AM
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Last one I did was the first I'd ever measured when I cut it, and 10mm was about perfect.
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Old 04-25-2019, 09:32 AM
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So, double the chassis clearance? 6mm for 12th, 8mm for F1, 10mm for wgtr and tc?
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Old 04-25-2019, 09:43 AM
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Don’t carpet tracks have a minimum to prevent damage to the carpet
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Old 04-25-2019, 09:46 AM
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Originally Posted by Billy Kelly View Post
Donít carpet tracks have a minimum to prevent damage to the carpet
"don't drag on the carpet"
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Old 04-25-2019, 09:55 AM
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It really depends on the chassis you are racing a F1 car has its body closer to the centerline then a touring car. I cut the body to the body line , start by setting the body posts so that body line is at the chassis height. try a couple laps if its dragging find out where and either raise the body post one hole or trim the body a little.
Some car types roll more then others ,so the heigth off the track will vary. I try to be as close to the track while conering and not rubbing
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Old 04-25-2019, 10:43 AM
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Originally Posted by WagwanBumba View Post
Per title!
How much ground clearance do you normally give your touring car body? I've not really been considering this in setting up cars/body pairs in a consistent manner and can't really find much information on the discussion of this topic.
Black CRC carpet 11mm
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Old 04-25-2019, 11:43 AM
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Originally Posted by Billy Kelly View Post
Donít carpet tracks have a minimum to prevent damage to the carpet
Only a chassis spec. Body is wider, and needs to be higher than the chassis.
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Old 04-25-2019, 11:57 AM
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This is from Randy Casterís page itís pretty simple and it works
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Old 04-25-2019, 05:42 PM
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On a touring car for black carpet, cut the sides about 5mm above ride height and the front about 6mm above ride height.

Set post heights so tires don't rub the tops of the fenders.

Any body drag will slow the car a lot. I think this is more important than any aero benefit from keeping it close to the ground.
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Old 04-25-2019, 07:12 PM
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I generally aim to have the bottom of the body level with the bottom of the chassis. If the body catches on the ground frequently while driving, I trim it as necessary to prevent that.
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Old 04-25-2019, 09:19 PM
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I think these are all pretty good suggestions. Body rubbing on the ground is a definite no-no because you're really drastically affecting the work your suspension and tires are doing.
Given how important body aero seems to be too nowadays, I would have thought that body height, and ground clearance could be a tuning factor too.

I have a race this weekend (if it's not rained out). Its 13.5T fixed timing blinky race so I don't think the body roll will be drastic but in practice I'll give something like a 6mm front 5mm rear a shot.

Keep up the discussion!
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Old 04-26-2019, 12:18 AM
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I'd say the body rubbing against the tires is far worse for vehicle performance than the body rubbing on the ground. Unless you have done something drastically wrong, the body will only drag on the ground for a split-second at a time, which isn't great, but if the edge of a wheelwell catches one of the tires it can cause drag that lasts for several seconds -- longer time equals greater effect. So I'd say it's more important to make sure the body never catches on the tires than to make sure the body never touches the ground.
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Old 04-26-2019, 12:52 AM
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Body rubbing an indoor track surface can have the greatest effect of all. Your removal from the facility....
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