[KenDogg]

OK, possibly a stupid question. I recently read an article on double clutching, where it says to depress the clutch, shift to N, release the clutch, tap the gas, depress, shift to lower gear, release.
This is my first manual car, but when I downshift I've been just skipping the 2nd 'clutching', meaning i depress, then tap the gas as i'm shifting to match RPMs, release.
Is there a big difference btw the 2, and if so what is it?

[pr4wn0r]

<quote = "wikipedia">
The purpose of the double-clutch technique is to match the rotational speed of the input shaft being driven by the engine to the rotational speed of the gear you wish to select (directly connected to rotating wheels). Once the speeds are matched, the gear will engage smoothly. If the speeds are not matched, the dog teeth on the collar will "crash" or grate as they attempt to fit into the holes on the desired gear. A modern synchromesh gearbox accomplishes this synchronization automatically.
</quote>
source = Double clutch - Wikipedia, the free encyclopedia

The biggest concern of people I have talked to about this is wearing out the clutch. By using the clutch twice per shift you will wear it out quicker. However, you can do a lot more damage to it by rev'ing up the engine real high and dropping the clutch. So I say if you want to (or are used to) double clutch, than go for it, otherwise don't worry about it.

[07Bullitt]

Originally Posted by KenDogg OK, possibly a stupid question. I recently read an article on double clutching, where it says to depress the clutch, shift to N, release the clutch, tap the gas, depress, shift to lower gear, release.

i always call that "woofing" just reving at the guy next to me trying to encourage him to run, an example of double clutching to me is how Mcqueen shifts in this car chase.

http://www.youtube.com/v/GMc2RdFuOxI&rel=1

[06RedfireGT]

Double clutching is also called "heel and toe" but it isn't neccessary with these cars.

[07stanggt]

Only time i ever thought real double clutching was nescessay was old semi's.

Heel toe is different in that it is for racing. downshifting going into a turn it is nescessary, left foot on the clutch right heel on the brake, toe on the gas, bump the gas when you shift to avoid wheel hop.

It is never needed or even advantagous in up shifting.

[07Bullitt]

Originally Posted by 07stanggt It is never needed or even advantagous in up shifting.

just dont left off the gas, and forget about the brakes.

[KenDogg]

ok im still a little confused. so is what im doing considered double clutching or not exactly?

[IronStomach]

Originally Posted by KenDogg OK, possibly a stupid question. I recently read an article on double clutching, where it says to depress the clutch, shift to N, release the clutch, tap the gas, depress, shift to lower gear, release. This is my first manual car, but when I downshift I've been just skipping the 2nd 'clutching', meaning i depress, then tap the gas as i'm shifting to match RPMs, release. Is there a big difference btw the 2, and if so what is it?

Yeah, what pr4wn0r said.

I currently have a Scion tC (that I'm trading in next week on a Mustang GT!) and it doesn't have a synchro in reverse. First few hundred miles driving it I was accidentally mashing gears whenever I put it in reverse - darn thing has to be completely still before dropping the stick into reverse - even with the clutch all the way to the floor.

The car I had before the Scion had double synchros on a 6-speed and spoiled me to no end. I'd never let the clutch out in reverse until I was dead still, but I'd at least drop the stick into reverse while coming to a stop....

Synchro gears are nice.

[IronStomach]

Originally Posted by KenDogg ok im still a little confused. so is what im doing considered double clutching or not exactly?

No, as you described what you're currently doing:

but when I downshift I've been just skipping the 2nd 'clutching', meaning i depress, then tap the gas as i'm shifting to match RPMs, release

That is not double clutching. That's using the synchro gear to mesh the gears for you so you don't have to double clutch.

Does that make it clutching or single clutching? I dunno, as long as it's not crunching I think you're ok.

[KenDogg]

alright good as long as im not hurting anything i'm happy

[KenDogg]

thanks again

[05mustang_TT_charged]

if you want to learn go watch Fast and Furious again

[Luis_GT]

Originally Posted by 06RedfireGT Double clutching is also called "heel and toe" but it isn't neccessary with these cars.

actually, thats wrong... Heel toe is rev matching but you only depress the clutch once as if you where down shifting normaly, I do it all the time and its a lot better than normal downshifting as it doesn't jerk the car to a halt waiting for the revs to pick up.

[Luis_GT]

Originally Posted by 07stanggt Only time i ever thought real double clutching was nescessay was old semi's. Heel toe is different in that it is for racing. downshifting going into a turn it is nescessary, left foot on the clutch right heel on the brake, toe on the gas, bump the gas when you shift to avoid wheel hop. It is never needed or even advantagous in up shifting.

I do it the other way... My heel on the gas and my toe on the brake.

[07stanggt]

Originally Posted by Luis_GT I do it the other way... My heel on the gas and my toe on the brake.

Good luck with that on a track luis

Originally Posted by KenDogg ok im still a little confused. so is what im doing considered double clutching or not exactly?

What your doing would be considered heel toe. You are not letting of the clutch while in nuetral, like i said that is "double clutching" and is something you had to do in old semis or something. and it would be stupid to do it on your car.

push the clutch in, take it out of gear, tap the gas go into the next gear, it is still one smooth shift though. this is not something you have to do on the road though. But yea if you are going really fast at high rpms and now want to downshift for a turn you need to do it or else the wheels will hop and you will spin out.

And the point of the heel on the brake is that you are pushing hard on the brakes to slow for the turn while you are shift.

[1FastFox]

Double clutching is a thing of the past. There is no need to double clutch in our cars thanks to the syncros... Mustang forums are more informative than the movies, I know Vin Diesel and Paul Walker look like they know what they are talking about but they are reciting a script written by some egg head in an office that has driven festivas and metros his whole life. Kind of like how all the cars in the movie are 10 sec daily drivers that they built off of what they made delivering pizzas...

[07Bullitt]

Originally Posted by 05mustang_kb_charged if you want to learn go watch Fast and Furious again

satans movie

[Trick Tuners]

Originally Posted by Luis_GT I do it the other way... My heel on the gas and my toe on the brake.

Wow! You must have some skills, my foot wont bend like that. I keep my foot at about a 45* angle pushing the brake with the center of my foot, then blip by rolling my foot onto the gas. The good thing is when you are braking hard the gas is right there.

[Luis_GT]

Originally Posted by 07stanggt Good luck with that on a track luis

Wiki source

When a driver performs a heel-and-toe downshift, they will first use the ball of their right foot (toe) to depress the brake pedal and slow the car down sufficiently.After that, the driver lets go of the clutch and rotates their right foot to operate the throttle with the outside edge of their foot (heel), increasing the engine rpm to match the required rpm for the selected gear.

[StangAddiction]

Originally Posted by 1FastFox Double clutching is a thing of the past. There is no need to double clutch in our cars thanks to the syncros... Mustang forums are more informative than the movies, I know Vin Diesel and Paul Walker look like they know what they are talking about but they are reciting a script written by some egg head in an office that has driven festivas and metros his whole life. Kind of like how all the cars in the movie are 10 sec daily drivers that they built off of what they made delivering pizzas...

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