JLEE, just reread your post. With synchromesh trannys you really don't need to double clutch, the car takes care of most of that for the driver in a normal downshift in a street car such as a P car. My understanding is that relatively simple race cars do not have a large synchromesh tranny. Don't mean to sound like Skippy but consider driving at 80 MPH in 4th gear then a quick downshift/abrupt declutching into 2nd. The rear end screams as the drive train can't keep up. The engine over revs as the tires smoke and some component of the drive train fails under pressure. Not a pretty picture.

 

redline your're right. but even syncros wear and double clutching slows the process.
also, on the track you are either on the gas or on the brake but no coasting.

 

Now I see the light!

 

Yep, synchros wear eventually I'm sure. But if you want to be quick in a modern car one can't even consider double clutching.
Coast??? Why bother tracking the car? Even green run group students realize that rapidly.

 

There's your problem. Try doing exactly what your doing, but as soon as you're in the next gear down, and still braking, blip the throttle and release the clutch.

Never be coasting with the engine and wheels disconnected any longer than necessary.

Truthfully, heel-and-toe is a bit awkward on the street unless you're braking quite hard. The brake pedal isn't down far enough to easily get over to the throttle.

On the street, with gentle braking, do your braking first, release the brakes, then clutch in, new gear, blip, clutch out. It's still not ideal, but at least you won't be coasting.

 

Farz, here you go my boy.
http://www.edmunds.com/ownership/how...2/article.html

 

i have seen an experienced driver turn his engine to mush by screwing up a downshift on the track. The last driver that cooked his engine was two run groups above novice.

i would not wish that outcome on anyone whether a juvenile driver or not.

I do wish all 6speeders a happy and healthy holiday season.