862 HP 13B Rx7 street car
IRS Champion
Joined: Aug 2001
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From: NY
There's a dozen or so cars in Aust. dynoing over 1500hp with street tires.
IRS cars are a bit harder to strap down since you have to eliminate susp travel otherwise the tires will come off the rollers.
Banned. I got OWNED!!!
Joined: Aug 2002
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From: chatsworth,Ca.
+1
this section will eliminate the internet mechanics from the real ones quickly
my cheap *** never used slicks n the dyno because the wear out very quickly and are not cheap!
But since IRS cars are sometimes harder to get a "good" strap down on the dyno, if you have one thats making power and it's running street tires, traction often becomes an issue. Slicks with a low air pressure and a "hard" strap down on the dyno are great for that little traction problem. The slick actually conforms to the roller, which is why they are so BAD on a dual roller dyno because the slick gets pinched and can and does throw the car off the roller.
-J
IRS Champion
Joined: Aug 2001
Posts: 2,038
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From: NY
Slicks with a low air pressure and a "hard" strap down on the dyno are great for that little traction problem. The slick actually conforms to the roller, which is why they are so BAD on a dual roller dyno because the slick gets pinched and can and does throw the car off the roller.
-J
-J
you want to use street tires on dual rollers. If you have to use slicks you'll want to use as much tire pressure as possible. You DON'T want the tire to deform.
You'll also have to wait between runs so tire temp doesn't get to hot.
on our dyno dynamics you set the car up so it actually pulls up on to the nural (sp?) rollers during the pull, therefore it wouldn't be an issue... however we have the best luck with street tires and higher than normal air pressure
we tried a set of bfg radials and it almost destroyed them on the nurals hahaha
we tried a set of bfg radials and it almost destroyed them on the nurals hahaha
You don't want to try this on a dual roller. The slick will shred itself and you'll most likely pop the tire.
you want to use street tires on dual rollers. If you have to use slicks you'll want to use as much tire pressure as possible. You DON'T want the tire to deform.
You'll also have to wait between runs so tire temp doesn't get to hot.
you want to use street tires on dual rollers. If you have to use slicks you'll want to use as much tire pressure as possible. You DON'T want the tire to deform.
You'll also have to wait between runs so tire temp doesn't get to hot.
Senior Member
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From: miami fl
really impressive, we just dynoed the car last week n after a few runs it started slipping like crazy but we got it tunned...
IRS Champion
Joined: Aug 2001
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From: NY
Once those slicks got hot you could forget about traction.. At least you were able to get it tuned. Dyno number's are just numbers. The most important number comes from the track.
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From: miami fl
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From: NorCal
WOW! On what gas are you guys using? VP Import, C16?
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