Who knows how to double clutch?

The bigest problem i had coming from a regular car transmission going to a large truck was only pressing the cluch half way down when shifting. When you press a truck cluch all the way to the floor the hill holder brake engages, by pushing all the way to the floor when shifting you can damage the cluch brake, its tough un learning years of practice.

I do know "how" but do not need to, and would need a lot of practice to do it properly.

It was necessary for manual transmission vehicles until rendered obsolete many decades ago by the invention of the "Synchromesh" gearbox (I wonder if that was originally a brand name?), which aligns the gears without having to depress the clutch pedal more than once.

Ever since it has only been still needed on vintage vehicles, built before the invention.

It has never been necessary on anything I have driven - I think my oldest vehicle was made in about 1960, with 3-speed manual, column-change, synchromesh gearbox. (My present car, made in 2006 I think, has a 5-speed manual gearbox.)

I do, I have a Class A CDL

Don’t need a clutch if you rev it just right 🤓

Double clutching is a technique usually just used by truckers

I had a 74 Dodge Dart with a 3 on the tree, that pretty much made learning to double clutch a requirement

Also used a technique to use engine revs to eliminate use of clutch

Done it many times on buses and big trucks.

I did it as a teenager in our 61 Plymouth with 3 on the tree.

I have in the past done that.

Not hard

Single clutch only, I’m afraid. Sounds macho.

people has got so lazy .cars most trucks don't have a clutch.