Quote:
Originally posted by peacy
With double-declutching during upshift and downshift you make sure that the engine's rev and the transmission's rev matches. By doing this you achieve a much smoother ride (even under heavy acceleration) and you'll be able to shift down from 5th to 2nd without loosing you gearbox. Some people say that it's not necessary with today's all-synchromesh gearboxes in everyday driving.
Double-declutching during upshift:
lift off -> depress the clutch -> switch into neutral -> release the clutch -> depress the clutch -> switch into a higher gear -> release the clutch -> step on the gas
Double-declutching during downshift:
lift off -> depress the clutch -> switch into neutral -> release the clutch -> blip the throttle -> depress the clutch -> switch into a lower gear -> release the clutch -> step on the gas
During downshift with the throttle blipping you make sure that the engine's rev and the transmission's rev will be the same. You don't need to do this during upshift, since from the first declutching the engine's rev will fall (because of the engine's internal friction), so by the time you finally release the clutch the engine's rev will drop to the desired level.
Heel-and-toeing isn't really useful during your everyday driving.(unless you think any road as a racetrack...) In order to reach the maximum cornering speed you have to enter the corner with relatively high speed (which you cannot keep through the corner). Than you start turning the wheel and braking heavily (since you would slip if you'd keep that speed). But in the meantime you already preparing for the exit from the corner. After you've reached the middle point you can keep accelerating. And even before you reach the middle of the corner you do the heel-and-toeing in order to prepare for the exit. In case of a turbocharged car you can keep the engine above a certain rev, so you'll have maximum boost when you're leaving the corner.
Hope this explains. If I wasn't totally clear, just ask.
|
That's totally what I just said!!
Except with instructions...
