Single clutching okay?

Floating gears is shifting without using the clutch, except from a stop. It's easier than you might think, once you get the rhythm and rams right.

 

A non synchronized transmission should not shift like a car, by just stepping down on the clutch and shifting.
What are you driving?
A large truck would raise all kinds of hell trying to shift this way, getting it into another gear would be a minor miracle without the grinding telling you this was wrong.
Holding the clutch all the way down while moving will take out most clutch brakes making it impossible to get it in gear at a stand still.

What you are describing is wrong on so many levels that it is hard to believe it actually works.

Using some clutch to help it out of gear then floating it into the next is done all the time. Simply using the clutch like a cars never works without lots of grinding followed by a loud clunk when it finally drops into the next gear.

 

Phone hates me...rpms not rams.

 

I am a student and just started driving. I started out the first day single clutching but have started to work on doing the double clutch. I was practicing on an old truck in the yard so I can get used to timing out the shifting and the splitter. I "like to think" it is good to double clutch because the huge truck transmission gears take longer to stop and I want to mesh into the right gear correctly. I also figure that there are going to be times when you make a mistake and grind the gears anyway so it is best to double clutch as much as possible so that you can protect your truck from damage the most you can. This is my take =)

 

My driving school had a couple of slightly smaller "city" trucks that had synco's in the transmission. Fun to drive, kind of like a car --- they were Freightliners. Here is the way I would change gears on the BIG trucks.

1. Push clutch in to get transmission into neutral. Hard to get into neutral without clutch pushed in if the drivetrain is under a load (the engine is pushing the truck forward, or the engine is braking the truck. You could force it into neutral without clutch if you take the load off the drive line. I never did that but if you go from wheels pushing the truck to engine braking there is a small amount of time where the drive line is not loaded.

2. Let clutch out while in neutral. If the clutch is kept in there is no way to control the speed of the input shaft since the engine is not connected to the transmission at that point, so to get the proper transmission input shaft to output shaft RPM ratio you need the clutch out.

3. Use Fuel pedal to increase the input shaft speed or let truck coast to slow it down to match RPM's.

4. WHen RPM's match, Push clutch in then move the stick-thing to lock a gear to the transmission shaft. If you don't push clutch in and the RPM shaft speed ratio is not exactly proper, it will be hard to go in (grind), even with using the clutch if the input and output shaft ratio is way off you will still grind.

5. Let clutch out to let engine make truck go forward...

So that's how I did it. Push clutch in two times.