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double clutch

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Old Dec 14, 2003 | 03:03 PM
  #1  
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From: Worthington
Default double clutch

I've had a manual most of the 14 years I've been driving. I've heard this term quite a bit over the years and never asked what it meant. So...?

Jon

p.s. I did a search with no luck
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Old Dec 14, 2003 | 03:07 PM
  #2  
Quik S2K's Avatar
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From: Devil's Island
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Double clutching is when you go to shift, shift it in neutral......rev to match the RPM's and shift it to the next gear. That's what I get out of it.
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Old Dec 14, 2003 | 03:09 PM
  #3  
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From: USC
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Google is your friend
http://www.google.com/search?hl=en&ie=UTF-...q=Double+Clutch
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Old Dec 14, 2003 | 03:11 PM
  #4  
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From: Devil's Island
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Great Googoly Moogoly!!!

Double clutch....double clutch.....double clutch.

Just trying to get the ones at the bottom to come up with something. They are there like a search by words in a thread
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Old Dec 14, 2003 | 04:22 PM
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From: Woodstock
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Great directions BUT....sounds about as easy as playing the drums or rubbing your stomach and patting your head!! How in the world can this be done smoothly, on a constant basis, and without grinding the gears? How can this possibly be done while trying to acheive 0-60 sprints?? I hear people talk about doing this but seems impossible to do quickly and smoothly.

Gear in first, clutch in, gear to neutral, clutch out, gas(rev match based on prior gears RPMs),clutch in, gear to second, clutch out, gas!!!!! Can this be right? If so, I would rather buy a new clutch every 6 months than to do this. Someone please make this easier for me. I want to do what is best for my car but this is too much work!!
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Old Dec 14, 2003 | 04:47 PM
  #6  
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From: Cortlandt Manor, New York
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double clutching goes back to when trucks and cars (all had m/t) were not synchro-mesh.

kind of like having a starter button or starter pedal.

or vacuum wipers.

or r&h options.

no need or benefit now.
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Old Dec 14, 2003 | 05:11 PM
  #7  
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From: Seabrook
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Ross Bentley, in his well known and well read bood "Speed Secrets" states that double clutching, which was used to achieve smooth gear changes in cars that did not have synchromesh transmissions, is unnecessary in modern day cars with synchronized gear boxes.

One can learn a great deal about proper driving techniques, on the road and on the track by reading this book.

FYI, he talks about double clutching on pages 23 and 24.
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Old Dec 14, 2003 | 05:23 PM
  #8  
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From: Fairfield
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Although you don't need to double-clutch in a syncro gearbox - doing so rather than just rev-matching helps bring the gearbox interrnals up to speed as well as the engine when downshifting thus saving some wear and tear on the syncros.

As for the question about how can you do this smoothly - you use double clutching on a downshift (not on upshifts) as to not upset the balance of the car. Doing it properly (clutch in, neutral, rev-match, clutch in, downshift, clutch out) avoids the lurch that occurs when downshifting without doing so. On a track or driving aggressively on back roads - this keeps you from upsetting the balance of the car via abrupt weight transfer as you enter a corner.

I HIGHLY recommend you attempt to teach yourself this technique as the S is the most rewarding car to double-clutch on the backroads. Especially with a nice loud intake - you can get in total sync with the sound of the motor and have a blast rowing through the gears.

Double-clutch into second, steady on the throttle, accelerate hard out of the corner, into 3rd at redline, back down into second with another double clutch and on and on and on.
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Old Dec 14, 2003 | 05:51 PM
  #9  
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From: Come see me after class.
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No need to double clutch. Rev-match is all you need.
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Old Dec 14, 2003 | 06:00 PM
  #10  
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From: Fairfield
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my gearbox will last longer than yours
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