Do you guys double clutch?

[UCBeau]

D. Tearing down an engine with the mad scientist because the piston rings are fried.
E. I said 10 second car, not an eta. :p

F. Overnight parts from Japan

[FredK]

G. How to source NOS, if you need it TONIGHT.

[NOMAD]

I only double clutch when my laptop tells me my manifold pressure is too high and the floorboards start popping off.

Yeah, dyno tuning is for sissies. I dyno-test WHILE RACING! I'm that good.

[brandondan1]

Wow, you guys are pretty smart, remembering lines from a gay (but entertaining) movie that came out 5 years ago.

Shouldn't you be going to MIT or something? Or do you have that atten..tion....deficit...thing...

[Yakinho]

Why is double clutching used so frequently in rally racing? Every once in a while I get to sit passenger with a guy with an old datsun 510 rally car, and an evo5, and he double clutches all the time... He's been driving rally cars for the past 30 years so his footwork is FAST, would there be any difference in rallying?

[BigD]

Why is double clutching used so frequently in rally racing? Every once in a while I get to sit passenger with a guy with an old datsun 510 rally car, and an evo5, and he double clutches all the time... He's been driving rally cars for the past 30 years so his footwork is FAST, would there be any difference in rallying?

Used to be used. Old dogs = old tricks. Watch any of the modern drivers - they don't use the clutch because they have non-syncro (but constant mesh) boxes and they have lightning quick shifts (well rally guys have sequential). Here's a good example, watch and listen to him shift:

(can't friggin find this video on YouTube, there's one chopped up partial with stupid fluff and the rest is all homos posting their stupid video game replays)

http://www.dailymotion.com/video/xvbkz_hans-stuck-bmw-m3-gtr-au-nurburgrin_auto

[LINUS]

Why is double clutching used so frequently in rally racing? Every once in a while I get to sit passenger with a guy with an old datsun 510 rally car, and an evo5, and he double clutches all the time... He's been driving rally cars for the past 30 years so his footwork is FAST, would there be any difference in rallying?

I **think** some ultra hardcore race trannys don't have synchromesh gears, I want to say they have helical cut gears. Is it possible your buddy would have one of those trannys?

I might be wrong, but I remember some crazy trannys Quaife had built for some Euro marque car that had a big warning that they didn't have synchros in it. I don't remember anything else though.

[Turf1600]

I **think** some ultra hardcore race trannys don't have synchromesh gears, I want to say they have helical cut gears. Is it possible your buddy would have one of those trannys?

I might be wrong, but I remember some crazy trannys Quaife had built for some Euro marque car that had a big warning that they didn't have synchros in it. I don't remember anything else though.

what would be the advantage? durability?

[Teaguer]

I triple clutch . 8-)

[4ce30]

the only reason i double clutch is because Vin told Paul to and they are Street Raaaaazzzoooorssss
-Brandon

[UCBeau]

Yeah, dyno tuning is for sissies. I dyno-test WHILE RACING! I'm that good.

wow that's so hardcore! sometimes its hard for me to read the wideband readings with all the neon lights i have inside the car.

[Yakinho]

I **think** some ultra hardcore race trannys don't have synchromesh gears, I want to say they have helical cut gears. Is it possible your buddy would have one of those trannys?

I might be wrong, but I remember some crazy trannys Quaife had built for some Euro marque car that had a big warning that they didn't have synchros in it. I don't remember anything else though.

Very possible, the guys got crazy stuff in those cars, three seperate hand brake set ups in each car, along those lines..... Thanks BigD, haven't seen that video before, but Hans Joachim Stuck and his father are monsters.

[NOMAD]

yes, you can buy gearboxes for racing with straight cut gears from what I know. They usually call them "dog boxes".

Not sure why agian, but when you said it was an old Datsun, I bet it has a dog box.

[808BMW]

No clutch FTW!

Although on your driving test (and probably on your interviews) on big trucks with 9/10/12/15/18 speed trannies you are supposed to double clutch, most companies want drivers than can float every gear, no clutch, and no grinding.

Clutch is used to come to/from a COMPLETE stop. Anything else you shouldn't be wearing down the clutch, they're expensive.

[BigD]

yes, you can buy gearboxes for racing with straight cut gears from what I know. They usually call them "dog boxes".

Not sure why agian, but when you said it was an old Datsun, I bet it has a dog box.

Yeah the racing boxes have straight cut gears, that's why they howl so incredibly loud. The reason they aren't synchronized is because it makes the boxes far more rugged and it lets someone with enough skill to rev match to shift faster than any automatic ever could (or anyone with a syncro box pumping the clutch). All it really takes is to develop a rhythm with the car, knowing how fast the gear box/engine slow down and pull your foot back off the gas at the right speed so as you pull back, the box load is 0, the gear pops out, in that instant, the engine slows down just enough for the next gear and all the while you were swinging the stick, and it will almost feel like it gets "sucked" into gear. With a lightweight rotating mass, this happens in an instant. A downshift is the same idea except instead of pulling your foot back, you press the gas a little. You don't have to match PERFECTLY because the windows in the gears are a little bigger than the dogs, so there's some room for error. The only reason street gear boxes have syncros is because most people will never bother to learn any organic skill related to driving - tell them where to push and where to yank to get from A to B and leave them alone.