Floating or double clutching

Only drover 2 Mack's.They had a strance long clutch feel to them.

 

Yep. It took a man to handle the clutch, and a idiot to handle the concussion. When you climb in the seat and see head prints in the peg board roof you know it rides bad. Still impressed it never broke down. Now that I own my own truck I could take I few head hits to the roof if it wouldn't break down. Of topic I guess. Just made me think of that truck. Lol.

 

Yeah,they were reliable,that long clutch was a different"animal".Took a week to get used to...then back to a Eaton 10 speed...Time to start all over.

 

The funny thing is with all the automated transmissions around talking about clutches will be like reconstructing a dinosaur at the smithsonion in 5 years. Well I say funny. It's kind of sad.

 

I have no idea what ya'll are talking about (or rather, i've got no experience with either)

the auto trans concern me but like I've been told 100 times now, it'll be hard to find a company with manuals in 10 years anyways. stilll... I'd rather get my 1st/2nd years in on a manual for the experience. It's tradition, ####.

 

If you can float without grinding gears, it's better on everything because you aren't moving all the clutch parts.

The reason for the "double clutch" is when you do the second pump, it brings the trans gears to the same speed so it will slide in without grinding. It's the same reason you have to hit the accelerator when down shifting, you've got to speed that lower gear up to match the speed of the gear you are coming out of.

 

I don't see the point of floating. 95% of the time you're going 60+ anyways. It don't hurt to double clutch when you finally have to slow down or speed up

 

Floated a 1650 ft/lb tranny for 1.5 million miles that was behind a tuned 6nz putting out around 675 horsepower and over 2000 ft/ lb pulling 100,000 lbs steady that tranny was still tight when I got rid of truck .. it's all in how you shift and manage your throttle done right no way is wrong but done wrong no way is right

 

On my Macks I do both seems when I am heavy the trans shifts easier when double clutching and I am old school I still down shift and double clutch. One of my Macks has a cummins and Jake and it's easy to down shift but the one with the dynatard jests seems to be like a Jake on 1. Just some noise and won't let you overspend so it's braking and shifting down to save the shoes. I have seen a lot of drivers that don't down shift the just clutch or neutral coast to the stop sign or red light.

 

I'm told it's much easier to break a tooth on a gear coming out.
So that's the first pump.
The second is just to give you a bit more range when your upshifting.
That's the second pump.

Now my cousin ( Billy Big Rigger ) will set the jake on low, and upshift float so fast, it really is impressive. Said he perfected it in a cab over Pete with a Cummins / 13 / with 2 million miles.