Way to bump a 5 year thread

 

Nothing has changed in the past 4.5 years. It is still not necessary to double clutch when downshifting the S2000, especially on the street. Now that we have a lot of history with the S2000 drivetrain, and quite a few of us track the car, it is clear that the synchros are not the weak link in the drivetrain.

Rev-matching to smooth a downshift is just fine.

 

Is there some kind of zombie smiley face for a resurrected thread?

-First, learn to rev match
-Then, learn to heel-and-toe
-Then if you want to, learn to double clutch

The first time I drove my S, I tried downshifting with and without double clutching, and I felt the shifter to engage more smoothly with a double clutch, so I do it. I know it's not necessary, but it's more fun, and it takes more skill, which makes it more satisfying.

My other car (93 Talon), known for weak synchros, requires double clutching on some downshifts, and appreciates it on all shifts (even upshifts when it's cold). I heel-and-toe double clutch before a few turns every day on the street -- you know, sort of the exact opposite of "flappy paddles" doing all the work for you.

 

Once again, let's be clear on our terminology. Double-clutching and rev-matching are not the same thing.

As I posted above, double-clutching involved engaging the clutch, moving the shift lever to neutral, releasing the clutch, revving the engine, re-engaging the clutch, moving the shift lever to the next lower gear, and releasing the clutch. This needed to be done quickly and smoothly. Modern transmissions have synchronizers to match differences in transmission output shaft and layshaft speeds, so all that is necessary is rev-matching.

 

i came upon from a search and then read this and was thinking ...honestly it is helpful, of course we can get away with never doing it but i like to try to baby the sync-mesh just a little.


ive driven a no-sync tranny where you HAVE TO or your crush gears, especially when they're straightcut dogtoothed.

However still people should do it as i stated when there is a large rpm spread happening. Imagine the force it takes to spin down 6,000 rpms for example. It's a bit much and our car covers a huge rpm range so its a bit worse.

 

I double clutch only when going from 2nd to 1st -- was more of a habit than anything. My previous car (BB6 Prelude) would grind when going from 2nd to 1st without double clutching ...

Otherwise, I don't double clutch when downshifting.

 

2-1 with my toyota tacoma for example you have to double clutch, it wont grind but it simply wont go into 1st over 10mph otherwise.