What EXACTLY is double clutching? I have head numerous explinations, none of which are the same.

 

when u are gasing it, in a gear and step on the clutch and release for a brief period, causing the rpms to jump and supposedly gain more pull from the second catch. personally, i don't thi nk it works. powershifting...that's something else.

 

interesting....

Double Clutching as I've always known it:

1. run out gear
2. push in clutch and put car in neutral
3. release clutch
4. push back in clutch and throw in the next gear

It's useful for rev matching in autox/open track so you don't disrupt the car and when your syncros start taking a **** on you.

 

thats what most people consider double clutching. DC is also used in vehicles with heavy clutch systems(big rigs, dump trucks, etc.), although most big truck drivers dont use the clutch except from a stand still.

 

so which is it?

 

It is pushing the clutch in to put the tranny in neutral, letting out on the clutch in neutral, and pushing the clutch back in to move to the next gear.

Big trucks don't have synchros in the trannies. You have to double clutch them in order to match engine speed and to get the tranny in and out of gear. You don't double clutch a car.

This is the ONLY definition of double clutching.

 

Then why do so many people here talk about it?

 

cause to many people watch F&F.........

 

From my understanding, Double Clutching should be used when turning like on a road/track so that you have smoother transitions between gears especially when downshifting. Now unless you plan on shifting 1st, 2nd, 3rd, and then back to 2nd again...I don't think you need it for drag racing.

 

Right

Right, at least from what I've heard

Wrong

Double clutching in a car is usually associated with downshifting, not upshifting/drag racing a la F&F--blip the throttle once the shifter is in neutral and the clutch is engaged, and then you clutch in/downshift/clutch out. It's useful on older cars with crap/no synchros, or maybe on an autox course if you want to go to first, or if you're going down more than one gear...

basically it means that not only is the engine rev-matched, but the transmission's gearshafts are rev-matched too. It's not widely used on modern cars with good synchros though.

[edit]
uhh...not so much.


[Modified by MrBite, 4:44 PM 1/29/2003]

 

For that I always use the heel and toe method

 

thats for downshifting while braking...