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Old 02-05-2006, 06:59 PM   #1
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Default droop settings on tc3

I would like to know the proper way to set droop on my tc3 and what kind of effect more or less droop has on the car.

We race indoor on carpet with foam tires. When I dive into a corner the car likes to traction roll or has enough body roll to allow a wheel to lift and unload the diffs. I had the droop at the settings suggested in the manual and with half worn tires the ride height is 4.5mm front and back. This combo of settings allows the shocks to extend much more than the length of the spring. I'm thinking when the car is cornering the weight transfer pushed to the outside wheels as the suspension compresses and the inside suspension extends to the point that the springs are no longer are putting pressure on the shocks and as a result there is zero force trying push the tires to the surface and they break traction. I then decreased the droop to the point when the car is set at 4.5mm ride height when ready to run but when you lift the car up the suspension only extends about 1mm before the droop screws come in contact with the chassis and now there is always preload on the shock springs. The car still wants to traction roll but does not chatter as much. I'm not sure how much droop the suspension should have or if it should have any at all. My car setup is this:

80wt oil with #2 piston, no limiters inside shocks, white springs
Speed Mind 42 shore 26mm tires
no swaybar
stock caster and kickup
2deg neg camber
0 deg toe
normal differential

50wt oil with #2 piston, no limiters inside shocks, yellow springs
Speed Mind 40 shore 28mm tires
no swaybar
3deg toe in
2deg neg camber
regualar differential

Thanks for any help.
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Old 02-05-2006, 07:07 PM   #2
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umm it sounds like your car is geting to much grip thus traction roll, mabey try usung less in the front and abit more in the rear allways want it to have a rake. also try lookin at ur tires they also might be the problem if your on rubber. or try not going as hard into the turns try to take them smooth and flowing. hope thos help
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Old 02-05-2006, 07:17 PM   #3
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go to the associated website and use Mike Blackstock snowbirds or cleveland indoor setups
Geoff C.
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Old 02-05-2006, 07:40 PM   #4
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i would play with the camber too, set it 1, that should help would also get rid of some rear toe 1.5/1
"Hello How 'bout that ride in? I guess thats why they call it Sin City." Alan Garner~"I play the drums, I'm good as hell" Richie Rich
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Old 02-05-2006, 08:14 PM   #5
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Typically you will run with uptravel in the 1,2,3,4mm range. thats uptravel above ride height.

With foams i ran 1 to 2mm uptravel.

I have heard of guys CA'ing the sidewalls of there foams to stop traction rolling from happening. With the shore ratings your running i would not think your being overly agressive on traction..
"Without Rules its just Backyard Bashing!"
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Old 02-05-2006, 08:32 PM   #6
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Thanks for the info. I'm kinda stumped as to why it's doing that myself. With the hard tires and stiff suspension by all rights the car should have very little traction but the opposite appears to be true. I have a set of double blue foams to try, any harder and they may as well be made from wood.
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