Originally Posted by +ve psi
I'm curious as to how many ppl feel that dbl clutching is a worthwhile affair in sport driving. My opinion (not that it matters) is that the mass of the syncros is low enough that the wear caused by aggressively using them is hardly worth the time required to dbl clutch. There's no doubt that dbl clutching increases shift time and its sole purpose is to reduce wear on the synchros which only happens when aggressively downshifting. When you are aggressively driving the last thing you are thinking about is wear and the first thing you are thinking about is speed and precision, therefore i see dbl clutching as a contradiction to sport driving. Am i wrong?
The only reason to truly double clutch a street car using a synchro gearbox is if those synchros start to go bad. My '97 Legacy's synchros in 3rd and 4th gradually wore away, and it was grind city unless I double clutched. Then it was nice and smooth, no grinding.
Its a good trick to have in your book for situations like that, or driving really old cars with non-synchro gearboxes. Otherwise, simple rev-matching is all that's necessary. That's the bottom line.
-Mirror