Anyone on here know what "kicking" the clutch means?

[Boostage]

I was trying to explain this method to onejoezee in a thread on SF but I dont think I am explaining it properly, and I wanna see if anyone here knows what I am talking about.. its amethod to reduce lag on a large single..

first of all I amnot talking about brake boosting

Brake boosting:

Holding the brake and gas simultaneously so that the motor gets loaded which builds boost to launch hard.

^^^ok thats NOT what Im talking about^^^^

what I am talking about is this..

when you are moving in 1st or 2nd and want to move off quickly, you quickly "kick" the clutch ( meaning push it all the way in and release immediately) while holding the gas. the rpms will climb up and once the clutch engages the car will shoot off as if you brake boosted. I dont know the proper terminology for this method but if you know wtf Im talking about please let me know.

 

[lagged]

why not just downshift?

 

[tlo86]

i think they call that 'double clutching' as well

meh i think im wrong, who cares.

 

[HIDPLANET]

I think youre referring to kick shifting.
Not the best way shift for speed.

 

[TurboFreak]

Clutch Kicking is used in drifting to gain RPMs and induce the drift when entering a turn. Its basically "popping" the clutch, if anyone is familiar with that.

 

[annoyingrob]

Edit: Turbofreak beat me to it.

I'fe heard of that term, but not in the context you put it. I've heard of clutch kicking in drifting. When going into a corner, push the clutch in, then let it up quickly. This will kick the tires out, initiating a drift. Anybody who's driven a RWD 5-speed on snow and ice will know this. This is why it's not a terribly good idea to downshift on snow

In regards to doing it in a straight line, the idea is when you push in the clutch, you allow the RPMs to rise, and spool your turbo, then you let the clutch back up, and go faster. Sort of like a 2-step. I've tried this, but it really doesn't work very well. The amount of time it'll take to spool your turbo won't make up for teh additional boost you'll get.

 

[Boostage]

why not just downshift?

because you cant downshift if you are already in 1st. some people call it double clutching but that is not correct. ok here is a scenario if this helps..

your in 1st rolling at 2500 rpms. Like you had just moved off from a stop light normally.( keep in mind you are already moving) then you "kick the clutch".(foot still on the gas) the second you floored the clutch the rpms went up from 2500 to about 4500. and by the time you release the clutch, there is an instant load on the motor and the car moves of HARD under boost. this is still in first gear btw. what is the name of this method, its not brake boosting or double clutching!

 

[s383mmber1]

Doesnt sound like it could be all that safe for your car

Double clutching is used mostly when downshifting....

 

[Boostage]

Edit: Turbofreak beat me to it.



In regards to doing it in a straight line, the idea is when you push in the clutch, you allow the RPMs to rise, and spool your turbo, then you let the clutch back up, and go faster. Sort of like a 2-step. I've tried this, but it really doesn't work very well. The amount of time it'll take to spool your turbo won't make up for teh additional boost you'll get.

ok this is exactly what I am talking about HOWEVER. it works alot better if you do both the clutch and apply more throttle at the same time. if your turbo is big and you cant build boost while rolling 1st or 2nd. and you do it properly (meaning give it more throttle as well as kick the clutch) it will build boost as if you just downshifted. the response is IMMEDIATE as soon as the clucth is released

 

[annoyingrob]

Double clutching is used mostly when downshifting....

Nuh uh. Fast and Furious taught me it's used for upshifting :icon_razz

 

[Boostage]

Nuh uh. Fast and Furious taught me it's used for upshifting :icon_razz

please dont start shit like this in my thread.

 

[kabanimk3supra]

if i'm understanding this right, it sounds like it would burn your clutch up. really fast. i may be wrong though.

 

[OneJSupra]

check this out ...

http://www.youtube.com/watch?v=QlBxs6AvCRA

 

[Boostage]

if i'm understanding this right, it sounds like it would burn your clutch up. really fast. i may be wrong though.

no

 

[OneJoeZee]

no

How would it not severely decrease the life of your clutch? To shoot forward fast as you put it after free revving the engine up a few 1000 RPM, the clutch is going to HAVE to slip for the driveline to catch up to the engine speed. There's no way around that.

I said this on SF. If you're sitting at let's say 2500RPM, you rev up to 4000-5000RPM, when you let the clutch back out you're going to either spin tire, slip the shit out of your clutch until the driveline catches up to the engine, or you're going to break something. And if you're only revving up maybe only 1000RPM or so, you might as well have kept your foot on the gas anyway and save your clutch. By the time you kick the clutch and let it out again, you will have covered that short RPM span anyway without having to unnecessarily abuse the clutch.

I'm not understanding the purpose of this method. As you described it, this is only useful in 1st gear. Any other gear you would be better off downshifting into the correct gear/RPM.

My turbos don't spool full boost til around 4400RPM or so. If I'm in first, it doesn't really take that long to just wait. If I'm trying to drive hard from a dig, I can slip it a little from there. If I'm driving hard off a roll, I wouldn't be trying to do it outside of my powerband anyway.

I don't see the point in frying up the clutch by kicking the clutch like that. Just kicking the clutch real quick in a straight line isn't going to do much. I've tried before just messing around.

 

[The Reaper]

yea im with joe. i dont feel like typing why but its just not worth it at all

 

[Boostage]

How would it not severely decrease the life of your clutch? To shoot forward fast as you put it after free revving the engine up a few 1000 RPM, the clutch is going to HAVE to slip for the driveline to catch up to the engine speed. There's no way around that.

I said this on SF. If you're sitting at let's say 2500RPM, you rev up to 4000-5000RPM, when you let the clutch back out you're going to either spin tire, slip the shit out of your clutch until the driveline catches up to the engine, or you're going to break something. And if you're only revving up maybe only 1000RPM or so, you might as well have kept your foot on the gas anyway and save your clutch. By the time you kick the clutch and let it out again, you will have covered that short RPM span anyway without having to unnecessarily abuse the clutch.

I'm not understanding the purpose of this method. As you described it, this is only useful in 1st gear. Any other gear you would be better off downshifting into the correct gear/RPM.

My turbos don't spool full boost til around 4400RPM or so. If I'm in first, it doesn't really take that long to just wait. If I'm trying to drive hard from a dig, I can slip it a little from there. If I'm driving hard off a roll, I wouldn't be trying to do it outside of my powerband anyway.

I don't see the point in frying up the clutch by kicking the clutch like that. Just kicking the clutch real quick in a straight line isn't going to do much. I've tried before just messing around.

Joe I could tell you again but I would only be repeating myself over and over. I have been doing this for YEARS with no additional wear on my drivetrain, from lt1's,ls1's turbo hondas. and other cars. and had NO problems. my neighbor who posts as 1fastsupra (here is his FS thread http://www.supramania.com/forums/showthread.php?t=49973)

he has been doing it for years, as you can see he has a 76GTS. I can assure you in first gear when he kicks the car builds boost INSTANTLY like its was a 57trim single. I been in the car personally. I have been doing this for years. and there have been no problems.

Joe, this is new to you, you have never done it. you can theorize/speculate on IF the method words and IF it will wear out your clutch, or you could treat the situation as if I were Ric johnson who just talks out of his ass like an idiot. or you can listen to me as I actually have been doing this for years. Im not going to keep this up but I will tell you this. if you have a big single, and you move off in 1st from an intersection, and someone ran the light and is about to clip you. and you kick the clutch the car will instantly move out of the way. even if you are in second. simply flooring the car in 1st in a situation like that will not make the car get out of the way fast enough. THATS HOW FAST IT IS.

 

[Yellow 13]

How about some heel toe?

 

[GotTurbos?]

THATS HOW FAST IT IS.

lol, ricer. Anywho, there is no way you can say you've been doing it for years with no additional wear. Kicking the clutch is going to make it wear, especially if you are giving it enough throttle to build boost in neutral. I don't really care what your friend does in his car, or what turbo he has, that doesn't mean he knows what he is talking about. I can believe that it might be a bit quicker, but I will not believe that it makes enough of a difference to constitute replacing a clutch twice as much.

 

[OneJoeZee]

I just don't believe you, Boostage. And I especially don't believe you're not causing increased where. You are describing slipping the clutch while holding at WOT. That would 100% cause decreased clutch life. Just like slipping the clutch from a dig.

I HAVE tried your clutch kick thing before. It did nothing I couldn't do by just flooring it.

I don't know about your car... but even with my upgraded turbos, when I floor it in 1st or 2nd, it WILL move. The car may not make 400hp off boost but it will move right away. If someone ran a red light, by the time I kick the clutch, I will have already been hit. :dunno: If I just rolled off the light, I wouldn't have shifted out of first anyway. If I put my foot down in first, the car will move forward right away fast enough. THAT'S HOW FAST IT IS!

At any RPM after the point where I hit full boost(4200-4500), the turbos take X amount of time to spool up regardless. I could be at 6000RPM and it would still take a certain amount of time to spool the larger turbos. Kicking the clutch isn't going to change physics and make my turbos spool up any quicker to save me from getting nailed by someone running a light. The power offboost will have been enough to move.

I'm sorry, I just don't believe in your technique. No matter what you do, other than shooting some nitrous or using an anti-lag system, a large turbo will take a certain amount of time to spool up. You can't change physics.

I know how my car behaves. I normally shift at around 3500-4000RPM when I drive. Nailing the gas at that RPM will make the car move. I don't need to kick the clutch to initiate some movement. Free revving the engine isn't going to build any boost on large turbos.