What exactly is double clutching ive heard that term used before and the other day when I was waching the american lemans race and they were showing the drivers feet, he would tap the clutch twice before shifting.

 

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pretty sure it's....example: your'e in 3rd gear, you press clutch, put in neutral, release clutch, rev up, press clutch, put in 2nd gear, and release clutch. basically rev matching. correct me if im wrong

 

exactly what it is. but when you learn how to do it right and fast doesn't seem compliocated at all.

helps out the transition to lower gear makes it smoother ans less stress on the trans components

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tvrsir &raquo;</TD></TR><TR><TD CLASS="quote">exactly what it is. but when you learn how to do it right and fast doesn't seem compliocated at all.

helps out the transition to lower gear makes it smoother ans less stress on the trans components</TD></TR></TABLE>

This is only true for a non-synchro transmission. The reason to double clutch is to spin the lay shaft up to the same speed as the output shaft. You do that by "engaging" neutral and revving the motor. It's rev-matching before you rev match the input shaft. A synchro mesh transmission (which all street cars have) already does this for you. So, for most of us double-clutching only wastes time and increases wear and tear. As long as you rev the motor up to the speed it needs to be in before releasing the clutch you will be fine.