Stupid Question?

customstang · 02-01-2006, 01:59 PM

Everyone talks about launching at so many RPMs and such... well I have a manual V6 and I'm just wondering, how can there be a difference (I'm not saying there isn't, I'm just asking how it works!) in just letting the clutch out as if you were driving around town normally and then stomping on the gas, so it doesn't peel out... and revving it up to 4000 rpms and dropping the clutch so it peels out forever???

From my experience on stock tires, both were pretty close to the same. Now I have 275's but it's cold here and even when the roads arent icy, it doesn't get very good traction when you are on the throttle 100%.

My question I guess is, how is revving up your engine gonna help your times, even if you do get good traction? As soon as your tires grab the road, won't the engine just drop to normal RPMs (1000-2000 at the very beginning of first gear)?

I haven't had warm enough weather to test it out, I just figured the engine would bog down as soon as the tires grab and then it won't be in the powerband.

Just wondering!

Thanks for any info in advance.

P.S. Maybe I'm doing it wrong?!?

spike_africa · 02-01-2006, 03:01 PM

The reason you rev it up is so the motor will be in the powerband. And you dont just let the clutch out at 5k unless you have slicks or it will just blow the tires off. Instead what you do is slip the clutch aka not letting it out all the way you modulate the amount of grab the clutch is giving to get the car moving while not smoking the tires. this keeps the motor from bogging and the tires from breaking loose. All while keeping the car in the car in the power band.

dannyb785 · 02-01-2006, 03:13 PM

kinda like when you downshift to 4000 rpms it jumps up pretty quickly in acceleration, launching at high rpms is kinda like a staionary downshift, where you want the rpms as high as possible while keeping as much traction as possible. Those with slicks raise up to 5000 do so bc once the clutch grabs, theyre already at 4-5k within a second, whereas lettin it bog down first would take a few more seconds to raise to 4-5k

customstang · 02-01-2006, 08:05 PM

I see, thank you guys

I thought people meant they were dropping the clutch and I thought that was just plain silly... haha

Now I see what ur talking about

spike_africa · 02-01-2006, 09:02 PM

Quote:

Originally Posted by dannyb785

kinda like when you downshift to 4000 rpms it jumps up pretty quickly in acceleration, launching at high rpms is kinda like a staionary downshift, where you want the rpms as high as possible while keeping as much traction as possible. Those with slicks raise up to 5000 do so bc once the clutch grabs, theyre already at 4-5k within a second, whereas lettin it bog down first would take a few more seconds to raise to 4-5k

um i dont get what your trying to say.:dots:

02-18-2006, 02:10 PM

i usually rev to about 3k... and dump the clutch... peels out a bit but then catches...

i do this cause thats about where the torque is at it highest and where hp starts to kick in...

isnt that how yer supposed to do it?

csledd · 02-18-2006, 02:13 PM

well I know that if I don't rev up and try to take off my car bogs and I don't get a very good start at all. When I'm at the track and using 275 DR's I launched between 3-3.5k, any further and the car gets a little sideways.. it took me forever to find where it was good for my car to launch at, but I can pull low 1.9's for 60fts and I'm destined to get into the 1.8's this year

02-01-2006, 01:59 PM	#1 (permalink)
customstang Senior Member Join Date: Sep 2005 Posts: 263	Stupid Question? Everyone talks about launching at so many RPMs and such... well I have a manual V6 and I'm just wondering, how can there be a difference (I'm not saying there isn't, I'm just asking how it works!) in just letting the clutch out as if you were driving around town normally and then stomping on the gas, so it doesn't peel out... and revving it up to 4000 rpms and dropping the clutch so it peels out forever??? From my experience on stock tires, both were pretty close to the same. Now I have 275's but it's cold here and even when the roads arent icy, it doesn't get very good traction when you are on the throttle 100%. My question I guess is, how is revving up your engine gonna help your times, even if you do get good traction? As soon as your tires grab the road, won't the engine just drop to normal RPMs (1000-2000 at the very beginning of first gear)? I haven't had warm enough weather to test it out, I just figured the engine would bog down as soon as the tires grab and then it won't be in the powerband. Just wondering! Thanks for any info in advance. P.S. Maybe I'm doing it wrong?!?

02-01-2006, 03:01 PM	#2 (permalink)
spike_africa Administrator Join Date: Sep 2004 Location: Orlando,Florida Posts: 6,960	The reason you rev it up is so the motor will be in the powerband. And you dont just let the clutch out at 5k unless you have slicks or it will just blow the tires off. Instead what you do is slip the clutch aka not letting it out all the way you modulate the amount of grab the clutch is giving to get the car moving while not smoking the tires. this keeps the motor from bogging and the tires from breaking loose. All while keeping the car in the car in the power band. __________________ Dustin 2002 GT Mustang 5-Speed Drag Radials,Sprayed,Powershifted WOOO HOOOO!

02-18-2006, 02:13 PM	#7 (permalink)
csledd DSG!!! Join Date: Feb 2005 Location: Paducah, KY Posts: 3,074	well I know that if I don't rev up and try to take off my car bogs and I don't get a very good start at all. When I'm at the track and using 275 DR's I launched between 3-3.5k, any further and the car gets a little sideways.. it took me forever to find where it was good for my car to launch at, but I can pull low 1.9's for 60fts and I'm destined to get into the 1.8's this year __________________ CAP DSG Registry 2003 Mustang GT - daily driven check out my cardomain for more info 296 rwhp / 310 rwtq Money spent @ AM: $4623.20 1984 Mustang Hatch - low budget project

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Convert top cleaner	Cheddarbob	Show, Shine, and Tunes!	11	12-15-2006 11:05 PM
Pinks The Game	mcmmotorsports	The Lounge	11	07-14-2006 01:49 PM
Aluminum Driveshaft	Badfish	AmericanMuscle	11	10-27-2005 07:59 PM
plugs?	cobra4123	Modular 4.6L Tech	9	08-05-2005 06:57 PM
In case you were wondering...	Shambles	The Lounge	19	08-05-2005 02:24 PM

02-01-2006, 03:13 PM	#3 (permalink)
dannyb785 Senior Member Join Date: Feb 2005 Posts: 3,176	kinda like when you downshift to 4000 rpms it jumps up pretty quickly in acceleration, launching at high rpms is kinda like a staionary downshift, where you want the rpms as high as possible while keeping as much traction as possible. Those with slicks raise up to 5000 do so bc once the clutch grabs, theyre already at 4-5k within a second, whereas lettin it bog down first would take a few more seconds to raise to 4-5k

02-01-2006, 08:05 PM	#4 (permalink)
customstang Senior Member Join Date: Sep 2005 Posts: 263	I see, thank you guys I thought people meant they were dropping the clutch and I thought that was just plain silly... haha Now I see what ur talking about

02-18-2006, 02:10 PM	#6 (permalink)
GREG@94GT Posts: n/a	i usually rev to about 3k... and dump the clutch... peels out a bit but then catches... i do this cause thats about where the torque is at it highest and where hp starts to kick in... isnt that how yer supposed to do it?