Is double clutching in a race ok

[Accord R33]

I've never even attempted to do it. I'm sure I'll suck.

It takes practice, but it's not that hard, really. The biggest problem I had at first was that I would bury the brake pedal when i tried to blip the throttle, which resulted in a less than desirable entrance to the corner

[PUMASTi]

It takes practice, but it's not that hard, really. The biggest problem I had at first was that I would bury the brake pedal when i tried to blip the throttle, which resulted in a less than desirable entrance to the corner

I'm sure I'll try it out one day, but honestly there's just no need for me to do that, I don't race and I would have to do it be whenever I drive the wife's teggy since the cb is auto

[deevergote]

Practice in the area under the Pulaski Skyway... that place is crazy.

[PUMASTi]

Practice in the area under the Pulaski Skyway... that place is crazy.

There's a few nice spots close by where I can practice in, but I'll probably just do it on the drive home one day, I don't have the time to go out just to practice doing that lol.

[JGTC]

I was wondering doesn't the heel-toe technique do the same thing but faster? I think is the same or at least it works fine for me

[skilzz]

plus isn't double shifting used in semis?? or not anymore?? i know they used to use it before, my dad used to drive em back home.

i know for a fact that the fuller 15 speed didnt need clutch for shifting... just rev match and slam that bitch in whichever gear


and umm dont double clutch when you downshift.. mmmkkkaaayyy

rev match downshift= longer clutch life, and longer engine mount life

[skilzz]

I've never even attempted to do it. I'm sure I'll suck.

i fail miserably at this technique

[batever]

plus isn't double shifting used in semis?? or not anymore?? i know they used to use it before, my dad used to drive em back home.

Yeah, I think they still are. What we are talking about here with the term "double clutching" is actually matching the speed of the transmission input gear to the engine's crankshaft, shaft I believe ( I am saying this out loud because it hasn't been made clear in the thread, not because I think you don't know this). Synchros can take care of this this on most passenger cars, as the torque exerted is not super high, but most large commercial transmissions don't have synchros and the driver has to match the input speed him/herself by using the clutch once to get into neutral, using the gas (or waiting) until the engine rpms are correct, and then using the clutch to engage the desired gear once those rpms are correct.

Apparently, because of the high torque that a semi (or dumptruck or whatever) engine can exert, synchros would just get fried so they don't use that type of arrangement in the transmission and you do need to double clutch on the shifts.

That's what I've read, I'll have to ask my brother next time I talk to him though as he drives semis for a living.

[The G-Man]

It takes practice, but it's not that hard, really. The biggest problem I had at first was that I would bury the brake pedal when i tried to blip the throttle, which resulted in a less than desirable entrance to the corner

That is my problem right now in the heel-toe technique.

[F22HB]

Double clutching is for downshifting typicaly. On a straightline race you should never double clutch.

[GangstaCB7]

aren't the pedals adjusted better for accomplishing the heel toe technique?? Plus having smaller feet helps, but doesn't that mean you have a small .......?

Yea CB pedals are too close to do heel and toe

[keycb7]

Some one told me beffore, you only double clutch when you skip one gear, for example 3rd gear >> 6500rpm>>clutch>>netrual>>clutch>>5th gear. however I don't see how can you benefit out of while racing

[wed3k]

doubleclutching is useful in left and right racing not this pussy from a roll racing.

[93F22A6]

Can some one explain this heel-toe techinque? I know what double-clutching is but not the heel-toe techinque.

[Flatline]

Can some one explain this heel-toe techinque? I know what double-clutching is but not the heel-toe techinque.

IT's using your heel for either the gas or brake and your toe for the opposite to keep a steady rpm in the range of you shift....


So if you come into a turn and need to down shift, you use heel-toe to slow down and rev match. Then by the time you are ready to go you'll be in the right rpm range to get into gear easily and be in the right rpm to keep the car from jumping around from the motor being forced into a certain rpm range to keep up with the wheels.

Thus smoother driving, faster shifting, and good braking all done with two feet.

and as for double clutching.... i have only used it to keep from grinding gears when i would redline. I actually didn't realized how far i was on the tach and slammed it into second and third and grinded both gears a little.

So thats the only time i use it. and i don't practice so it slows my shifting down. but it's better than replacing a tranny