Nope won't hurt it, clutch just stays engaged, and in the tranny all that's happping is one sliding gear is coming out of mesh and another going in. Clutch linkage, and the clutch probably gets more wear when using it every shift than, just floating.

Nothing can be hurt unless you grind them too much, which is bad whether or not the clutch is used. Just don't rest your foot on the clutch, or slam the clutch to the floor when double clutching.

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Jordan

From what I've read, heard, etc about auto-shifts, they are automated float shifting , done by electric or pneumatic actuators, and controlled by computer.

Full auto- with a torque converter is the only thing that is related to an automotive transmission.

AJ

So all you do is shift, no cluth involved at all. Or is there a trick to it? Do schools teach this?

DMV require double clutching for driving Test. Floating is the same principle of double clutching, without the clutch. Which would be useful if your linkage were to break, you would be able to contine normally to a truck shop for repair.

Upshifting-- Release pressure on transmission by easing off the fuel pedal, while pulling to neutral, then putting into next gear when rpm falls to the right rpm, repeat

Downshifting-- release pressure on transmission by giving a little rpm, move stick to neutral, raise rpm, put stick into lower gear repeat

It's the same principal as double clutching.

upshift clutch pull stick to neutral clutch stick into gear

downshift clutch neutral raise rpm clutch gear

Just skipping the entire clutch movement, which breaks torque on the transmission, making it easier to shift. With floating the torque break is down with the go pedal, which is how a Auto shift shifts. I'd assume the ultra shift does it the same way.

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Jordan

float up double clutch down even in offroad conditons So was I thought to drive a truck in the army as it´s the fastest way to avoid getting cought under fire.
Nowadays I have a 18speed Fuller to work with.

Double clutch for driving test might depend on the state. 6 or 7 yrs ago already WY did not require double clutch.

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Mich did not require double clutching when i took the test, and frankly, once the tester saw I knew my way around a transmission, from that point onwards he had no further interest in my specific technique.

Eaton Fuller (RoadRanger transmissions) has an interesting video (for newbies, anyway) that somebody on this site once posted a link to. According to Eaton Fuller the advantage to double clutching is that using the clutch 'breaks the torque' on the transmission and reduces the stress on the gears when the transmission is brought into neutral when the gears are floated, and this is when damage is most likely to occur.

I would think if one is proficient at floating and can do it consistently without clacking or grinding the gears that it wouldn't hurt the tranny but that's a big if.

Actually it takes the Stress of the Forks that moves the gears while you use the clutch...
I sometimes dip the clutch a little just when I feel the stick doesn´t come out softly.

That torque release also comes from lifting your foot from the throttle before sliding the trans out of gear.

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