you may be getting wiser with your age, but on the internet you're getting stupider because you just essentially refuted all your asinine posts about how necessary and cool double clutching is as compared to rev matching... but hey at least you admitted you were wrong, bud.

still stupid, but at least honest.

 

[QUOTE=WRS2K,Dec 17 2008, 01:16 PM]you may be getting wiser with your age, but on the internet you're getting stupider because you just essentially refuted all your asinine posts about how necessary and cool double clutching is as compared to rev matching... but hey at least you admitted you were wrong, bud.

 

Ok, how about another point of view? It might or might not be relevant to the opener, but I'll type it anyway.

What if you drive other vehicles besides the S2K? I don't know about you, but shifting a car is part of my muscle memory, meaning I don't really think about it if I'm doing it well at a reasonably fast pace. It takes me a fair amount of time to completely adjust to a car, and reprogram myself to drive it the best I am able.

Items I personally take note of:
S2K requires heel-toe
Crappy Subaru trans requires double clutching
S2K requires rev-match when slow upshift
Subaru boost requires slipping the clutch a bit on boost
Crappy Subaru trans requires sudo-double clutching into first always
Diesel truck requires steadying the throttle while clutch disengagement
Crappy Ford SUV petal layout means I always watch my foot-on-petal placement

Guess what is best for me? I do all of these (and other nigglely things) when in either car. Oh, and the diesel truck too (talk about embarrassing rev-matching ) Now if this applies to you, I dunno. We here at S2ki try to provide all the different information to help you make the correct decision for yourself, right?

So on that note, I recommend you learn and practice double clutching regardless of if it has a major benefit to your S2K's transmission. I personally believe it will help my S2K last longer. But I wouldn't yell at you if you didn't do it every time.

 

[QUOTE=AaronCompNetSys,Dec 17 2008, 02:01 PM]Ok, how about another point of view?

 

where did mr. Stupider, A$sinine and Superfluous go?

 

no, it's is not necessary to double clutch with contemporary manual transmission, but the OP was concerned over whether skipping gears while downshifting would harm the synchros in his tranny. when you downshift from 6th to 3rd, for instance, the rotational speed difference between the input shaft and 3rd gear is a lot greater than if you were to downshift from 6th to 5th. if i understand sychros correctly, the greater the rotational speed difference between the input shaft and the gear you are trying to shift into, the greater the strain you would put on the synchros which can lead to premature and accelerated wear. by double clutching, when going from 6th to 3rd, you speed up the rotational speed of the input shaft so that the speed difference between the input shaft and 3rd gear will be less thereby minimizing the strain and wear on the synchros. i rarely skip gears up or downshifting, but on those rare occassion when i do, i make it a habbit of double clutching just to minimize unnecessary wear on the synchros. again, is it necessary?? no. but i do it just for the peace of mind. put it this way, you don't need to rev match when downshifting either, but you do it to minimize the wear on the clutch. sure, some will try to argue that rev matching will provide you with smoother gear changes, but you can just slip the clutch if you want smooth. so all in all, rev matching is just as unnecessary as double clutching.

 

another d/c buddy..

 

The original reason for double clutching was that transmissions didnt' have syncronizers. You had to d/c to get the car in gear while rev match so that the gear and engine were at the correct speed or it wouldn't go into gear.

 

You can shift from any gear to any other as long as you know your target rpms are right.

 

why don't you perform a scientific experiment for us. do 6th to 3rd gear downshifts without double clutching (and without running down the gears) on your car on a regular basis and let's see how long your 3rd gear synchro will last.