help with double clutching

It is like a 3 step dance. One out of gear two up with the clutch three back in gear
if you look up the subject there is an old thread that has some very detailed posts

 

Actually it's a 4 step dance, clutch out then clutch in to next gear, hence the phrase double clutch

 

Professional drivers don't double clutch

 

As people above have said, clutch to neutral, clutch to next gear. Learn the RPMs that the truck is happy with shifting at, should be around 1500-1800 then clutch to neutral and clutch to gear. You also need to learn the speed range each gear can handle that way you can find the correct gear to be in. Once you've mastered that, get your #### foot off the clutch and start floating gears to save your clutch and clutch brake. Floating is extremely easy, find the RPM the truck will release the gear in, again around 1500-1800, as the RPM's fall, go to neutral, pause for a second, then let it fall into the next higher gear which should hit around 1000-1300. If you miss your opportunity to grab the next gear, increase engine RPM and wait slide it in when it's in the RPM range.

Clutching or floating, try not to force it and try not to grind it. It's all about timing.

 

I like all you guys that said float gears but when taking your state road test you will fail if you float gears.

DC is a timing thing. Once moving and time to shift push the clutch down just enough to dis-engage maybe 1 inch down, shift to neutral, up with clutch in neutral, dis-engage clutch, shift to next gear, up with clutch, repeat as needed.

Down shifting is the same but when in neutral give it a little RPM so the gears in the transmission match speed and it should slip into the next lower gear if you are not going too fast for that gear.
Dave ----

 

That varies state to state, and DMV personnel to DMV personnel. I passed my CDL test floating gears. Ideally you want to know how to do both, then ask the instructor if they would like you to double clutch or if they would mind if you float gears.

 

i agree with the above^. once you get double clutching down pat, you will be shifting so smooothly that double clutching will be something that you know how to do but won't ever really have the need to use.

JUST my opinion. keep stabbing away and it will all fall into place.

 

Maybe in CT, but I have heard others say this, even before I received mine, but when I tested back in the 80's, I floated, and nothing ever mentioned

 

Schools teach double clutching because it's the law.So I imagine the tester will want everything done the way school taught you.