silvermaster92

What exactly is Double Clutching?

initall

First, you take your foot off the gas and kick in the clutch. You shift into neutral, AND let the clutch out. You wait perhaps 0.3 to 1.0 seconds for the engine to slow down from its high revs, depending on how fast you were revving when you started to shift and how much inertia the engine has to slow down. THEN you kick in the clutch and shift into third, and let the clutch out quickly, feeding the gas appropriately. If you have judged it right, when you let the clutch out, there isn't any JERK. And when you shove the lever into third, the gears and engine are at a synchronized speed, so there's minimum wear on the synchronizers, which are the tiny clutches that bring the clutch plate and the gears into smooth synchrony. There's also usually less wear on the clutch plates.

silvermaster92

ok.

corvetteguy

My old ford (1929) does not have synchros in the
3 speed transmission. When you are up shifting
you do not have to double clutch. But if you are
slowing down and want to go into a lower geer
you have to put it in neutral rev the engine to
get the clutch spinning faster and then quickly
put it in the next lower geer. Most times you can do
that without geer grinding, but not all the time.
George

silvermaster92

oh ok.

TD7116

Didn't someone already have this post??

MikeHawke

completely unnecessary because we have had syncros since the 70s.

silvermaster92

If they did already post this, i didn't see it.

Gaspi101

I agree. I laughed for a while in that movie with Vin Diesel where he said something like "you were granny shifting and not double-clutching like you should..." and they were all driving modern sports cars. In races, you don't want to double clutch. You will be for about one second (if you do it quickly and your engine revs down/up quickly in neutral) without any acceleration at all! Anyhow. Despite popular sentiment, double-clutching is a throwback from relic years when we didn't have syncros. Amen.

GreyStang

I learned to drive standard tranny on a farm tractor, no synchros yep either double clutch or let'em grind lol

When I had my '79 Stang I used to upshift without using the clutch at all. Not quickly though