Originally Posted by tom2112
Seriously, Franc, I'm betting that many years of habit have more to do with it than actual utility. I used to drive a stake-bed truck for work (many years ago) and it had to be double-clutched. I had to correct myself when I jumped back into my Mustang for the drive home. Not that double-clutching will hurt anything, it's just unnecessary and makes your shifts take longer.
I don't double on the up shift, which is where dbblcltchin' would be an issue for speed. I only dbbl on the down shifts. Especially when aggresively driving at high speeds.
Try going 6 to 4 or 5 to 3 without it and I bet I can beat you thru the gears.
If you drive european like I do, then you will find more control and more power out of the turns using the engine for braking more than the brake pedal. To do that you will need to go 4 to 2 on the Dragon and 6 to 4 on Arkansas Rte 7 @ 150 MPH.
My 75 Starfire V6 had a Muncie four speed. Synchros still worked after 200,000 miles in all the gears, including first.
Don't take my word for it. Try it yourself or ask those who have seen me do it. Powershift when going up, dbble clutch when going down.