LiU wrote:good reply, that's what I've heard, FYI I usually skip gears in dialy driving and when I heel toe downshift. Can you name some situations?
Hmmmm. examples when it may be better to skip gears during a down shift. Okay
Street driving:: Short steep uphill braking zone approaching a tight turn.Racing situation: suddenly shortening your braking zone when someone cuts you off in a braking zone.
Andrave is correct. At racing schools, which teach technique, smoothness, and one specific line around a clear racetrack, Sequential downshifting is what's taught. And those little formula cars normally use non-synchronized trannies. So you will learn double clutching and heel/toe. Alternate racing lines, trail-braking, skipping shifts, drafting, competitve traffic, etc. come later, and take a little practice.
Obviously downshifting down 2 gears instead of one in a non-synchro race car is a little tougher as the rev match point is considerably higher. And if you miss that rev match while downshifting a non-synchro car, you won't get it into gear, and that's not a good thing. I can tell you from personal experience that at 100 mph braking hard for a turn and blowing even a single gear downshift, is not fun. Well, maybe a little fun if you don't hit anything (chuckle).
But downshifting a synchronized car 2 gears is certainly less of issue, just makes the synchros work harder. And matching the revs isn't as critical as the snchros will get it into that lower gear no matter what you do with the gas pedal. The main benefit of heel/toe in a street situation is to make the downshift less abrupt, (smoother) which will upset your chassis less as you enter a turn and make it a smoother ride for your passengers (assuming you do it correctly).