fletch101101 said:

Unless you have an old rally ledgend with a 2million BHP Turbo with major lag where you need to keep the tubo spinning there is no point in left foot breaking it jsut ****s the car up...... although a do rev match and clutchless shift when slowing down

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Percyhahn said:

i dont understand how you do a rev match. how do you know what rev you can change down at? is the same revs on every car?

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bludvl_x19 said:

Practice. It doesn't sound pretty the first few times, clutchless upshifts are 'easier.'

The revs will change from car to car, even in the same car, you need to be mindful of roadspeed. The process for going down would go something like: Pull out of gear, blip throttle, and at the right moment, push it into the next gear. Upshifting is easier, you lift off, and pull it through to the next one when the revs are just right. Get it wrong, and you need to blip the throttle while the box is in neutral and have another go. Or just slam it home, depends on your attitude...

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WhiteSei said:

Revs matching is easy. Upshift quick enough for the revs to drop the right amount. Not so fast you have to ram it in and not so slow the gearbox has to pull the engine back to speed.

To down-shift slightly missmatch the clutch & gas pedals so the revs blip & immediately push it down a cog. You will often down-shift quicker than you can up-shift. You cant do it slowly as the revs will have dropped off.

I'm from a biking background so I always match the revs, its better for the gearbox and makes for a smoother less lurchy drive.

Bikes have constant mesh (like cars) but don't have synchro cones on the drive dogs. You use the clutch to pull away and then upshift with no clutch. Gently preload the gearlever then momentarily dip the thottle to unload the gears and the next one slots in. Downshifts its the missmatched revs and clutch technique. Try to use the clutch on upshifts and its really hard to get a good clean shift.

Competition race & rally cars use the same type of gearbox as bikes - sequential shift without synchromesh.

Left foot braking? Completely pointless on the road even with an auto box.

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