Quote:
Originally Posted by official_george
Thanks for the reply!
What about rev-matching? Does it actually help save the clutch from wearing down?
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Yes. But more importantly, it prevents the car's balance from being disrupted. Daily driving isn't a big deal, but performance driving or racing use every bit of the car's capability, especially traction. If you're already loaded heavily in a corner, and then downshift mid-corner, the sudden forward weight shift and spike in resistance on the rear wheels is a recipe for a spin. This is also used as a technique called "shift lock" to initiate a drift, but it's hard on the drivetrain.
A little more info- The clutch is used to engage the engine to the transmission. The synchros are used to engage a selected gear to the drivetrain. Think of the synchros like little clutches for each gear. If you consider the fact that rev matching nearly eliminates wear on the clutch since you can match speeds before engaging it, double clutching can do the same for the synchros. DC'ing won't make any difference in the car's balance, but it's fun, and nice to know if you ever drive a car with a dog box tranny or a munched synchro.