S2000 Launching Techniques
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Joined: Jan 2005
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From: NA
i am not an expert on launching cars, but dropping the clutch seems like a bad idea to me... maybe it is a bit different on RWD cars b/c you can spin the tires more easily (I come from 4WD background where dropping the clutch usually meants busted tranny)
i usually rev it up to the rpm the car produces the most torque
when the light changes, i let go of the clutch, but i make sure I don't just drop it... i let it slip *just a tad bit* and it is history from there...
i usually rev it up to the rpm the car produces the most torque
when the light changes, i let go of the clutch, but i make sure I don't just drop it... i let it slip *just a tad bit* and it is history from there...
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[QUOTE=superjimbo,Oct 18 2005, 11:23 AM]
I would have to agree with kayvan. If you drop the clutch, power is directly translated to the wheels whereas if you feather the clutch your putting wear on your differential. Sure dropping the clutch puts more wear on your tires, but tires are much
I would have to agree with kayvan. If you drop the clutch, power is directly translated to the wheels whereas if you feather the clutch your putting wear on your differential. Sure dropping the clutch puts more wear on your tires, but tires are much
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From: Milwaukee Area
Originally Posted by energetic,Oct 18 2005, 09:14 AM
Most of the times I release the throttle when shifting, BUT if there is a serious challenge I just bet on it and take my chances with great results! 
Just like you said is not advisable also from my side but this is what happens...
Just like you said is not advisable also from my side but this is what happens...
by the way, see the link in my sig for info and video of proper launching techniques.
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From: Milwaukee Area
Originally Posted by r_master78,Oct 18 2005, 11:33 AM
i am not an expert on launching cars, but dropping the clutch seems like a bad idea to me... maybe it is a bit different on RWD cars b/c you can spin the tires more easily (I come from 4WD background where dropping the clutch usually meants busted tranny)
i usually rev it up to the rpm the car produces the most torque
when the light changes, i let go of the clutch, but i make sure I don't just drop it... i let it slip *just a tad bit* and it is history from there...
i usually rev it up to the rpm the car produces the most torque
when the light changes, i let go of the clutch, but i make sure I don't just drop it... i let it slip *just a tad bit* and it is history from there...
honestly, if you're going to launch, either commit and do it right, or don't even do it at all. anything in between increases the risk of damage.
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From: Milwaukee Area
Originally Posted by r_master78,Oct 18 2005, 03:41 PM
i agree with you on the launch rpm... as i mentioned, you should launch the car at peak torque, which is above 6k for our car.
as for dropping the clutch... AWD or RWD, the power has to go through the transmittion... with dropping the clutch, the power gets transfered into the gears like a sledgehammer, which will put a lot of load on them. with "slight" "initial" slipage of the clutch (maybe i should have made it clear on my last post... my definition of sliping the clutch wasn't feathering it, but rather a fast release of the clutch with control) the load gets transfered into the gears more progressively (even tho the difference would be in miliseconds). the diff wouldn't take a toll b/c clutch is taking the heat. you might need to replace your clutch if you go drag racing alot, but at least it is cheaper than replacing a transmittion...
as for dropping the clutch... AWD or RWD, the power has to go through the transmittion... with dropping the clutch, the power gets transfered into the gears like a sledgehammer, which will put a lot of load on them. with "slight" "initial" slipage of the clutch (maybe i should have made it clear on my last post... my definition of sliping the clutch wasn't feathering it, but rather a fast release of the clutch with control) the load gets transfered into the gears more progressively (even tho the difference would be in miliseconds). the diff wouldn't take a toll b/c clutch is taking the heat. you might need to replace your clutch if you go drag racing alot, but at least it is cheaper than replacing a transmittion...
you're confusing load with the sudden change in the drivetrain/diff from zero movement to higher rpm movement.
if you dump the clutch, your drivetrain and diff only takes an initial "quick shock" or jolt as it jumps to life. yes this puts some wear and tear on the car, however, the LOAD is lighter on the parts if you properly spin the tires on the launch. this is because the tires are spinning, so there is some freedom of movement to the drivetrain and diff, as the rpms fluxuate under the spinning of the tires.
if you slip the clutch or bog the launch, what happens is the rpms go from being up to way down very quickly, and rather than your tires spinning, they are solidly planted on the ground. this puts the entire load of the weight of the car squarely on your drivetrain and diff. this is more than likely how many suffer the bearing cap flex under heavy load that causes diff failures. (at least from what I've seen, read, and researched on the site)
so it IS better to do a full tire spinning launch. the tires spin allowing the LOAD to be gradually worked into the drivetrain and diff. bogging/slipping does the opposite and puts the greatest strain and load on the drivetrain/diff.
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From: Chicago
Originally Posted by drifttolga,Oct 18 2005, 02:51 AM
Hello everyone . How do u launch your cars? at which rpm? 4000 , 5000 , 6000 ???
and do u do it with revving to the rpm and the gear is inside one ; and do u only take your feet away from the clutch ??? If experienced drivers can teach this fully to us it would be great. Thanks for your help people .
p.s i want to launch my 05 s2k well because i had some problems with loaded 306 gti's and 330 ci's Thanks:::
and do u do it with revving to the rpm and the gear is inside one ; and do u only take your feet away from the clutch ??? If experienced drivers can teach this fully to us it would be great.
Thanks for your help people . p.s i want to launch my 05 s2k well because i had some problems with loaded 306 gti's and 330 ci's Thanks:::
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Originally Posted by Wisconsin S2k,Oct 18 2005, 05:32 PM
actually you have this exactly the opposite.
you're confusing load with the sudden change in the drivetrain/diff from zero movement to higher rpm movement.
if you dump the clutch, your drivetrain and diff only takes an initial "quick shock" or jolt as it jumps to life. yes this puts some wear and tear on the car, however, the LOAD is lighter on the parts if you properly spin the tires on the launch. this is because the tires are spinning, so there is some freedom of movement to the drivetrain and diff, as the rpms fluxuate under the spinning of the tires.
if you slip the clutch or bog the launch, what happens is the rpms go from being up to way down very quickly, and rather than your tires spinning, they are solidly planted on the ground. this puts the entire load of the weight of the car squarely on your drivetrain and diff. this is more than likely how many suffer the bearing cap flex under heavy load that causes diff failures. (at least from what I've seen, read, and researched on the site)
so it IS better to do a full tire spinning launch. the tires spin allowing the LOAD to be gradually worked into the drivetrain and diff. bogging/slipping does the opposite and puts the greatest strain and load on the drivetrain/diff.
you're confusing load with the sudden change in the drivetrain/diff from zero movement to higher rpm movement.
if you dump the clutch, your drivetrain and diff only takes an initial "quick shock" or jolt as it jumps to life. yes this puts some wear and tear on the car, however, the LOAD is lighter on the parts if you properly spin the tires on the launch. this is because the tires are spinning, so there is some freedom of movement to the drivetrain and diff, as the rpms fluxuate under the spinning of the tires.
if you slip the clutch or bog the launch, what happens is the rpms go from being up to way down very quickly, and rather than your tires spinning, they are solidly planted on the ground. this puts the entire load of the weight of the car squarely on your drivetrain and diff. this is more than likely how many suffer the bearing cap flex under heavy load that causes diff failures. (at least from what I've seen, read, and researched on the site)
so it IS better to do a full tire spinning launch. the tires spin allowing the LOAD to be gradually worked into the drivetrain and diff. bogging/slipping does the opposite and puts the greatest strain and load on the drivetrain/diff.
I guess the only difference is that RWD car can create a wheel spin to reduce the load on gears where as AWD cars have tough time creating a wheel spin from standing still... which is the reason for clutch slipage method... for AWD.. and maybe it is okay for RWD to drop the clutch...
Joined: May 2005
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From: Tallahassee, FL
Wow...the original poster has an MY06. Didnt think those were out yet. And removing the delay valve is the only way to get a good launch in the AP2. Without disabling it, you will fry the clutch.
John
John
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ok. im all confused. if you want to launch quick, why would you want your tires to spin? dont you want them to hook off the line? i by NO means a drag racer and ill admit i suck at lauching. i usually just rev up, release clutch to the sweet spot and when the light turns green i let off the clutch in a gradual, yet quick motion.