this video was of a stock car.

 

the videos are pretty sick! I wish i could get a go at that track that he is on. Is that mitsubishi's test track?

 

I always throttle blip, that heal toe shift is a **** though.

 

Wouldn't not rev matching put more strain on the synchros before the clutch itself? I thought the syncros were there to help minimize damage or wear in situations like that, but I may be misinformed.

 

When you rev match there is 0 effect on the snychro's. Synchro's match the transmission input shaft (and clutch) speeds to the transmission output shaft speed (which depends on what gear you select) during a shift and engine RPM has no effect on them when the clutch is depressed. Rev matching matches the engine RPM to the RPM the transmission input shaft, so when the clutch is let out the engine and transmission will not have to match revolutions, which adds wear on the clutch. At this point in the shifting process the synchro's have already done their job and been put to rest.

 

Okay cool, thanks for the info.

 

So i take it everyone things this pro rally Pannizi fellow is off his rocker for not rev matching and stuff?!

 

no, read what I posted again. It's normal for a rally driver to not rev match. What does Pannizi know, he's only won a half dozen tarmac rallies at the highest level or rally in the world.

 

Not necessarily.. I'm sure he knows what he's doing.. I havent watched the vid but he's probably not rev matching so that he will upset the balance of the car coming into a turn and using it for his advantage, since it is a rally after all. You will most likely see more GT style racers rev matching as opposed to Rally drivers, since GT racers dont intend to upset the balance of the car coming into a corner since they want traction.

 

the left foot braking is used for balancing the car in the corner and positioning it for the exit
cool vids btw....i wanna drive that course

 

During street driving, most people don't heel-and-toe shift during downshifts. For street driving, I don't see this as being a problem so long as you're not dumping the clutch. I've owned many manual tranny cars and never had a drivetrain problem with not heel-and-toe shifting. Almost all the race car drivers I know blip the throttle when racing.

Having said that, I'm trying to learn how to do this effectively. Takes practice!

 

Good explination of snychros stew! I agree, for just driving around please rev match, i hate it when im riding with some one and they decide to drop like 2 or 3 gears and just dont care about the clutch or the crank bearings or the transfer case/differential. you know that torque is gotta go somewhere when there is ~3000rpm mismatch between the sides of the clutch and a 2800lb car on the other, yuck.