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Launch RPM's at the strip

Stl376

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#1
Used the search but didn’t find this discussed. What RPM have you found to work best at the strip in an A8? Im talking about just loading the trans a little bit before you go green. I seem to have the best 60ft when its barely loaded under 1000 rpm, which is really just a touch over idle.
 


Markp

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#2
I have gotten a 1.48 60ft by launching between 1200-1500rpm.
 


oilburner

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#3
Used the search but didn’t find this discussed. What RPM have you found to work best at the strip in an A8? Im talking about just loading the trans a little bit before you go green. I seem to have the best 60ft when its barely loaded under 1000 rpm, which is really just a touch over idle.
what tires an what is your best 60?
 


Frenchcat

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#4
I would say it depend alot of the track prep. and only you can feel it at that time. I launch it around same as Markp said but with MT R's315 50 17, 23 pounds
 


oilburner

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#5
my best 60 so far 1.49 an that was barely above idle 305 45 18 mickeys 22 psi
 


Linda's Hell Cat

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#6
I only give enough throttle to know there is some gas.
I find very little rpms works good for me.

Linda [burnout]
 


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Linda's Hell Cat

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#7
I have 18 MtsRs and like 17 psi in the heat
 


hellno

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#8
my best is 1.55 and that was on 10.5 315/35/20 nto5r and the best I've done since I put the 17 inch mickey Thompsons on race stars is 1.585 but the Mickey Thompsons
are consistent 1.59/1.60 I launch any where from 1500 to 1800,, 18 to 20 psi but I'm suspect of the tune so now curt is tuning it and I'm hoping that improves
 


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#9
Redeye (3.09 gears)
305/45R17 MT ET Rs set to 18psi and heat those tires up!
1.47 60ft at 1500rpm

If the track is prepped enough I can launch at 1500rpm.
 


Mike Comp T/A #57

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#10
Leave from an idle.
IMG_7641 - Copy.JPG
 


OP
Stl376

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Thread Starter #11
what tires an what is your best 60?
MT R's 305/45/18 PSI 18 to 20 - my best 60 so far is 1.619 but over all average is about 1.73
 


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#12
I've cut 1.46-1.48 60s leaving at about 1200 on MT ET Street R 305/35R17.
 


moparjim

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#13
I usually leave about 1000-1200. 1.51-1.55 60'. Some of that is weather dependent.
 


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#14
Leave off idle wheels up.jpeg
 


Hellcat Cuda

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#15
Whoa, crap! Now THAT is hooking! 15" conversion in the back? What is done to your suspension and/or rear end to support such a nice launch?
 


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Whoa, crap! Now THAT is hooking! 15" conversion in the back? What is done to your suspension and/or rear end to support such a nice launch?
Demon Springs - 15" conversion - 315/60 radial pros - stock 2.62 with brace - Sphon adjustable arms - and my own chromoly toe links

here's a video
 


Jack_Toepfer

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#17
When you guys say idle, you’re not even pre-loading the drivetrain?
 


Linda's Hell Cat

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#18
When my Hellcat was Stock I would just Smash and go. Like killing a spider;)

I could do that for quite sometime too during the R&D and T&T process until I hit the 9's.

I don't have all the added suspension but I did have the HHP version of Demon Springs installed. So far I like them and the transfer of weight feels good on the launch. I just don't get to the track like I did with my Husband John/Top Cat to have a lot of runs in to make comparisons on different techniques.

So I have been doing the same thing with just enough throttle to know the fuel is coming through.


Linda [burnout][burnout]
 


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#19
When you guys say idle, you’re not even pre-loading the drivetrain?
Correct - no preloading
 


oilburner

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#20
When my Hellcat was Stock I would just Smash and go. Like killing a spider;)

I could do that for quite sometime too during the R&D and T&T process until I hit the 9's.

I don't have all the added suspension but I did have the HHP version of Demon Springs installed. So far I like them and the transfer of weight feels good on the launch. I just don't get to the track like I did with my Husband John/Top Cat to have a lot of runs in to make comparisons on different techniques.

So I have been doing the same thing with just enough throttle to know the fuel is coming through.


Linda [burnout][burnout]
Linda... did the hhp demon springs change the ride height in the rear??
 




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