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Author Topic:   tires gain air
D9Dave
Dirt Full Roller

Total posts: 43
posted July 05, 2005 09:10 PM  
How do you keep rear tires from gaining air pressure. mine gain 5 pounds after a feature. Makes the car drive bad.

doubletrouble racing
Dirt Forum Racer

Total posts: 88
posted July 05, 2005 10:32 PM  
The heat of the tire makes the pressure build.The tire that is building heat is telling you its working hard,I pay close attention to the ones building heat,could be a set up problem bad shock.....you might just want to start feature with less tire pressure allowing it to build up to desired amount.You hear about this problem in Nextel Cup and how the drivers have to baby the car until air pressures build up.

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racer17j
Dirt Forum Champ
Total posts: 5390
posted July 05, 2005 10:41 PM  
You could use either Nitrogen, Heilium or Hydrogen (highly flammable). All of these expand less when heated so will therefor build less pressure in the tire.

If none of those sound like an option, you could just leave the tires on the trailer, they won't build any heat there. Will make it hard to win a race though.

FlyNLoIMCA17
Dirt Forum Champ
Total posts: 753
posted July 05, 2005 11:37 PM  
If you don't want to run Nitrogen you might consider tire bleeders if your rules allow.

Racer X
Dirt Freak

Total posts: 256
posted July 06, 2005 04:21 AM  
Yep,bleeders work great if your rules allow them.

eborcim
Dirt Freak

Total posts: 303
posted July 06, 2005 08:08 AM  
set your finish tire pressures and scale it to them

D9Dave
Dirt Full Roller

Total posts: 43
posted July 06, 2005 10:00 AM  
we run the hoosier s-11. I tried nitrogen sat. They still gained 3 pounds. tonight I am going to get a vacumm pump to get all the air out of the tire. Then try the nitrogen again.

speedyd1
Dirt Maniac

Total posts: 170
posted July 06, 2005 12:13 PM  
i personally run nitrogen but you can also add an air dryer to your compressor and it does help alot. it will remove most of the moisture from the air which will reduce the heat buildup. most are pretty cheap and can be had anywhere that sells air equipment. i have also seen a unit that preheats the air before it is put in. i dont know how effective it is though.

    

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