Author Topic: Double de-clutching  (Read 1577 times)

Offline gti_taff

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Double de-clutching
« on: 14 January 2005, 16:28 »
Wot the heck is double de-clutching? Ive heard it mentioned here and there, i think its something racers do... If it means thrashing more performance out my golf, i wanna know how to do it! :evil:

Offline Dizzie

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Re: Double de-clutching
« Reply #1 on: 14 January 2005, 17:22 »
Taken from howstuffworks.com

The transmission shown here does not have "synchros" (discussed later in the article), so if you were using this transmission you would have to double-clutch it. Double-clutching was common in older cars and is still common in some modern race cars. In double-clutching, you first push the clutch pedal in once to disengage the engine from the transmission. This takes the pressure off the dog teeth so you can move the collar into neutral. Then you release the clutch pedal and rev the engine to the "right speed." The right speed is the rpm value at which the engine should be running in the next gear. The idea is to get the blue gear of the next gear and the collar rotating at the same speed so that the dog teeth can engage. Then you push the clutch pedal in again and lock the collar into the new gear. At every gear change you have to press and release the clutch twice, hence the name "double-clutching."
Mk4 Golf 150PD

Offline Burnsy

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Re: Double de-clutching
« Reply #2 on: 14 January 2005, 19:12 »
4 Clutches later and youll master it  :grin:

mrwotto

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Re: Double de-clutching
« Reply #3 on: 14 January 2005, 21:01 »
if you have to double your clutch in your car, it means your gearbox is dead lol

Offline topher

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Re: Double de-clutching
« Reply #4 on: 14 January 2005, 22:19 »
Only useful when changing down a gear at corners or islands. Personally I use the heel-toe method to keep the revs up. As you're approaching the corner/island push the clutch pedal down, use the heel of your right foot on the brake and the toe of your right foot on the accelerator (while the clutch is down) to increase the revs so that when you take your left foot off the clutch you're already at high revs and you don't get engine braking and you get a smooth transmission. Takes some practice but it's easy when you get use to it !

disclaimer: if you feck up your clutch or gearbox when attempting the above procedure, neither topher or golfgti.co.uk take any responsibility for your actions :grin:

Offline gti_taff

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Re: Double de-clutching
« Reply #5 on: 17 January 2005, 18:04 »
I think ill have to give the old heel-to-toe method a try. Just watch, my next post will be in the 'garage' under the subject "How do i remove a lampost from my golf?"