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Old 05-04-2002, 12:03 AM   #1
Salazar
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Question What exactly is "Double Clutching"?

You see, after the "Fast and Furious" came out people speculate whether double clutching was made up or if it really in fact is a racing term... Me and my friends were talking about it one day and one of them believed it was something like hopping from lets say 1 to 3 or from 2 to 4 in gears and matching the rpms... Im not really sure what it is, but i also read something online about using it to downshift from 4 to 2 or 5 to 3 by pressing the clutch, moving to neutral, release clutch, match rpm, press clutch, downshift, and drop it... Idunno if im making sense or not but what do you guys think
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Old 05-04-2002, 12:04 AM   #2
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Re: What exactly is "Double Clutching"?

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Originally posted by Salazar
i also read something online about using it to downshift from 4 to 2 or 5 to 3 by pressing the clutch, moving to neutral, release clutch, match rpm, press clutch, downshift, and drop it...
That's the real answer I believe.
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Old 05-04-2002, 12:11 AM   #3
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Double-clutching is a technique that grew from older vehicles with more primitive transmissions that did not have synchros. The deal was, on any downshift/upshift, you'd have to first take the car out of gear, then with the shifter in neutral, engage the clutch, revmatch, and then engage the next gear. This was to get the gearbox running at the same speed as the wheels, to avoid jolty shifts. Now that modern cars have a synchro mesh system in their manual transmissions (that equalizes gearbox speed), the only thing that double-clutching is still useful for is smooth downshifting (from any gear to any gear, provided you don't overrev).
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Old 05-04-2002, 12:18 AM   #4
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do you think upshifting double clutching is faster than just regular?? or just about the same
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Old 05-04-2002, 12:22 AM   #5
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Unless you've got a foot as fast as superman's, and the CDV removed, and impeccable timing, no. Double-clutching is pretty much useless on the upshift.
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Old 05-04-2002, 08:16 AM   #6
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Nobody double-clutch upshifts!

Quote:
Originally posted by Salazar
do you think upshifting double clutching is faster than just regular?? or just about the same
All the info about DC is right on and it is really only for race cars that don't have syncs. There is no need for it in your BMW. Just so you know though, nobody not even the racers that DC use it to upshift that is totally crazy. For a street car DC isn't needed but heel-toe is still a good idea.
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Old 05-06-2002, 06:50 AM   #7
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A waste of time in an E46.
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