Quote:
Originally posted by 88BlueTSiQuest
Totally useless on a synchronized tranny, unless you are a writer for the screenplay "The Fast and the Furious" and are looking for some somewhat technical line for your automotively impaired actors to speak outloud.
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Proper double-clutching (on downshifts) isn't useless. Anything to reduce wear on synchros is good. When making a turn off a main road, I double clutch before selecting 2nd. If I match it well, it slips right in; otherwise, I have to hold the gearshift against 2nd for a couple seconds until it goes in. On upshifts, my 944 shifts fairly nicely into 2nd when many other 944s would grind, so the synchros are still good. I'd like to keep it that way.
Skip Barber recommends double-clutch downshifting in his books. I haven't gone through his program, but I've browsed one of his books, and it mentioned the usefulness of double-clutching on downshifts.
Heel-and-toeing or clutchless shifting are probably useless and possibly dangerous techniques on the street, though.
Edit: Wow, a lot took place while I was typing this...Ignore this if you want...