Good rpm to launch at?

Kennethcuevas10 · 01-19-2008, 09:49 AM

I was just wondering at what rpm do some of you launch ur Si at? I havent really tried but I did a nice one last night at about 3k rpm,

not to much wheelspin and great grip. Thanks just curious on what would work best on this particular car.

Nemesis249MP · 01-19-2008, 10:39 AM

You don't jave enough information on that post to give you an answer:

Is it stock?
What size rims?
What type rims?
What type tires?

***NewbTuner*** · 01-19-2008, 10:45 AM

I have a decently modded si but i still have stock tires and the only track i can go to is extremely slippery, they dont even treat the track. I usually launch at 3400ish. if i launch much higher i will literally spin for a second or two and usually im going into second by the time i get traction and my nitrous is kicking in so it makes things worst. If i launch to much lower than that it just kinda bogs

SilentBob420BMFJ · 01-22-2008, 05:27 PM

doesnt this hurt your clutch? to get under 7 seconds 0-60, is this necessary?

***NewbTuner*** · 01-22-2008, 05:32 PM

Anything that it hurts can be replaced with a phone call to college hills honda lol:)

Kronos_32 · 01-22-2008, 05:39 PM

launch at ~3500-4500. i launch at 4500 or a bit below when i go into race mode. depending on your clutch work you may be able to run mid 14's (stock). ask the guy on the 14 sec 1/4 mile thread. we both shift at the same rpm and run it well.

Kennethcuevas10 · 01-23-2008, 10:33 PM

Thanks my Si is all stock and I launch it at about 3k it works but just seeing what works best.

***WhiteSicivic06*** · 01-23-2008, 10:34 PM

A tad over 3k here. Its never the same and hard to be consistent, but wheel hop destroys any 0-60 time!

schwartzki · 01-23-2008, 10:35 PM

WHOD(wheel hop of death) lol much like BSOD for those windows users

silverspoon1996 · 01-23-2008, 10:39 PM

I dunno the stock tires and a little work... Cold road.. isnt good to launch at all..

***Arganon*** · 01-24-2008, 12:23 AM

How exactly do you "launch"? Do you mean rev to 3.5k in neutral before you hit the gas?

***chrisfrofro*** · 01-24-2008, 12:37 AM

i usually launch at about idle.. then shift at 3k RPM..

rob76 · 01-24-2008, 07:17 AM

You should ride out the clutch at about 4k rpm. Dumping your clutch is just going to break something. Plus wheelspin gives you less traction. Static friction is much better than Sliding friction...unless your tires are made of teflon.

DOHCKLR · 01-24-2008, 04:14 PM

6.5k is where i dump my clutch

SilentBob420BMFJ · 01-25-2008, 04:27 AM

Quote:

Originally Posted by rob76

You should ride out the clutch at about 4k rpm. Dumping your clutch is just going to break something. Plus wheelspin gives you less traction. Static friction is much better than Sliding friction...unless your tires are made of teflon.

when you say "ride out the clutch" do you mean let it out at a somewhat normal rate, instead of just letting it fly out (dumping it)? man, im so afraid that im going to have to abuse the clutch and shit to make it go fast, and thus break stuff yearly.. btw ive never driven a manual, and im still awaiting my car, so perhaps im overreacting, but it seems as tho to get this car to go fast you have to drop the clutch at 4000+ rpms or something, which cant be good for the clutch, syncros, and other things (i dont know much about cars but ive been reading up on manual transmissions and such.. thanks wiki.org and howstuffworks)

rob76 · 01-25-2008, 05:09 AM

Well, yeah feather the clutch to prevent wheel spin but at the same time keeping the rpm (and the torque) up. That way your not putting massive amounts of stress on the drivetrain. Wheelhop puts so much stress on your drivetrain; that's how things get busted. At least with this method you're only wearing out the clutch. A clutch is something that is meant to wear out, just like brake pads.

rob76 · 01-25-2008, 05:13 AM

Anyhow, this is why you don't entice people to race you from a light, wait until you leave the light and let it rev higher and higher keeping beside them....then when you get to about 5500rpm you look over and give them the finger!

Civic06SiR · 01-25-2008, 08:02 AM

Depending on the conditions of the road and temperature I usually launch from 3500 to 4500.

SilentBob420BMFJ · 01-26-2008, 04:37 PM

Quote:

Originally Posted by rob76

Well, yeah feather the clutch to prevent wheel spin but at the same time keeping the rpm (and the torque) up. That way your not putting massive amounts of stress on the drivetrain. Wheelhop puts so much stress on your drivetrain; that's how things get busted. At least with this method you're only wearing out the clutch. A clutch is something that is meant to wear out, just like brake pads.

im guessing wheel spin is ok, but wheel hop is where it gains and loses traction repeatedly when you start moving, kind of like how abs feels, but when accelerating? does this hurt automatic transmissions too? i dont see how it hurts anything, your just accelerating and the wheels are trying to gain traction

rob76 · 01-26-2008, 05:24 PM

It's the jerkiness of it that results in short durations of high stress. It's bad for your CV joints, your motor mounts and your transmission.

Think of it this way, a narrow plank of wood may be able to hold your weight while you stand on it. If you were to jump up and land on that plank it might just snap.

01-19-2008, 09:49 AM	#1 (permalink)
Kennethcuevas10 Senior Member Join Date: Dec 2007 Posts: 103 iTrader: 0 / 0%	Good rpm to launch at? I was just wondering at what rpm do some of you launch ur Si at? I havent really tried but I did a nice one last night at about 3k rpm, not to much wheelspin and great grip. Thanks just curious on what would work best on this particular car.

01-24-2008, 12:37 AM	#12 (permalink)
*chrisfrofro* 4-1 Join Date: Jul 2007 Location: North Dallas, Texas Posts: 4,521 Chris iTrader: 4 / 100%	i usually launch at about idle.. then shift at 3k RPM.. __________________

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01-19-2008, 10:39 AM	#2 (permalink)
Nemesis249MP Senior Member Join Date: Jan 2008 Age: 28 Posts: 166 iTrader: 1 / 67%	You don't jave enough information on that post to give you an answer: Is it stock? What size rims? What type rims? What type tires?

01-19-2008, 10:45 AM	#3 (permalink)
*NewbTuner* Its all about ME Join Date: Jul 2007 Posts: 884 iTrader: 0 / 0%	I have a decently modded si but i still have stock tires and the only track i can go to is extremely slippery, they dont even treat the track. I usually launch at 3400ish. if i launch much higher i will literally spin for a second or two and usually im going into second by the time i get traction and my nitrous is kicking in so it makes things worst. If i launch to much lower than that it just kinda bogs

01-22-2008, 05:27 PM	#4 (permalink)
SilentBob420BMFJ Senior Member Join Date: Jan 2008 Location: Chicago Age: 24 Posts: 712 Justin iTrader: 0 / 0%	doesnt this hurt your clutch? to get under 7 seconds 0-60, is this necessary?

01-22-2008, 05:32 PM	#5 (permalink)
*NewbTuner* Its all about ME Join Date: Jul 2007 Posts: 884 iTrader: 0 / 0%	Anything that it hurts can be replaced with a phone call to college hills honda lol:)

01-22-2008, 05:39 PM	#6 (permalink)
Kronos_32 Senior Member Join Date: Dec 2007 Location: Seattle Age: 20 Posts: 1,167 iTrader: 0 / 0%	launch at ~3500-4500. i launch at 4500 or a bit below when i go into race mode. depending on your clutch work you may be able to run mid 14's (stock). ask the guy on the 14 sec 1/4 mile thread. we both shift at the same rpm and run it well.

01-23-2008, 10:33 PM	#7 (permalink)
Kennethcuevas10 Senior Member Join Date: Dec 2007 Posts: 103 iTrader: 0 / 0%	Thanks my Si is all stock and I launch it at about 3k it works but just seeing what works best.

01-23-2008, 10:34 PM	#8 (permalink)
*WhiteSicivic06* Bottle Fed! Join Date: Nov 2006 Location: Quantico Age: 27 Posts: 3,180 Ryan iTrader: 0 / 0%	A tad over 3k here. Its never the same and hard to be consistent, but wheel hop destroys any 0-60 time!

01-23-2008, 10:35 PM	#9 (permalink)
schwartzki Senior Member Join Date: Sep 2007 Location: Fort Wayne, IN Age: 23 Posts: 225 Tom iTrader: 0 / 0%	WHOD(wheel hop of death) lol much like BSOD for those windows users

01-23-2008, 10:39 PM	#10 (permalink)
silverspoon1996 Senior Member Join Date: Jan 2008 Location: Rockland County New York Age: 27 Posts: 618 JJ iTrader: 0 / 0%	I dunno the stock tires and a little work... Cold road.. isnt good to launch at all..

01-24-2008, 12:23 AM	#11 (permalink)
*Arganon* NHPB ftw Join Date: Sep 2007 Location: Regina, SK Age: 17 Posts: 457 Gordon iTrader: 6 / 100%	How exactly do you "launch"? Do you mean rev to 3.5k in neutral before you hit the gas?

01-24-2008, 07:17 AM	#13 (permalink)
rob76 Senior Member Member Join Date: Dec 2007 Location: British Columbia Age: 32 Posts: 547 '08 Civic Si iTrader: 0 / 0%	You should ride out the clutch at about 4k rpm. Dumping your clutch is just going to break something. Plus wheelspin gives you less traction. Static friction is much better than Sliding friction...unless your tires are made of teflon.

01-24-2008, 04:14 PM	#14 (permalink)
DOHCKLR Member Join Date: Sep 2007 Location: OH- Posts: 79 EZZZZZZY E iTrader: 0 / 0%	6.5k is where i dump my clutch

01-25-2008, 05:09 AM	#16 (permalink)
rob76 Senior Member Member Join Date: Dec 2007 Location: British Columbia Age: 32 Posts: 547 '08 Civic Si iTrader: 0 / 0%	Well, yeah feather the clutch to prevent wheel spin but at the same time keeping the rpm (and the torque) up. That way your not putting massive amounts of stress on the drivetrain. Wheelhop puts so much stress on your drivetrain; that's how things get busted. At least with this method you're only wearing out the clutch. A clutch is something that is meant to wear out, just like brake pads.

01-25-2008, 05:13 AM	#17 (permalink)
rob76 Senior Member Member Join Date: Dec 2007 Location: British Columbia Age: 32 Posts: 547 '08 Civic Si iTrader: 0 / 0%	Anyhow, this is why you don't entice people to race you from a light, wait until you leave the light and let it rev higher and higher keeping beside them....then when you get to about 5500rpm you look over and give them the finger!

01-25-2008, 08:02 AM	#18 (permalink)
Civic06SiR Senior Member Join Date: Sep 2006 Location: VA Posts: 3,483 Sam iTrader: 6 / 100%	Depending on the conditions of the road and temperature I usually launch from 3500 to 4500.

01-26-2008, 05:24 PM	#20 (permalink)
rob76 Senior Member Member Join Date: Dec 2007 Location: British Columbia Age: 32 Posts: 547 '08 Civic Si iTrader: 0 / 0%	It's the jerkiness of it that results in short durations of high stress. It's bad for your CV joints, your motor mounts and your transmission. Think of it this way, a narrow plank of wood may be able to hold your weight while you stand on it. If you were to jump up and land on that plank it might just snap.