Shiftin' Question

Someone mentioned using the jake brake when shifting. That is a dead giveaway of a beginner at the wheel that thinks they're being cool, but everybody that sees them is thinking all manner of derogatory thoughts about them.

For anyone reading this thread

DO NOT USE THE JAKE BRAKE WHEN SHIFTING

 

If you double clutchin the jake won't kick in anyway LOL

Petey

 

Here's the link to the 18 speed operator's manual. You will note it calls for clutching ALL shifts, and double clutching lever shifts. So to be the true professional, you must clutch every ratio change, as the book says to do.
You might also notice that one of the shifter buttons controls the splitter, the other the range. There are not two splitters in these transmissions. And the range, not the splitter, is synchronized.
18 speed driver instructions

Just so you know, the range is synchronized because it is around a 400% step in ratios, the splitter is 17% (it splits the ratios between main box gears.)

 

I'm completely in the same boat. someone insisted that professionals do it by the book! Kind of amusing that all my several millions safe miles yet I'd fail a driving test for not double clutching.

Shoulda put a sarc tag on that other post...

 

I float for one reason and one reason only, when I was taught to shift many years ago my dad would smack the back of my head each time I pushed the clutch in, ground a gear or made the driveline bang in anyway....very effective teaching by the ole' man. I have tried double clutching, seems to be a pain in the ### and you can grind the gears just as easily. I think in school it is taught as more of a timing thing. Just my 2c.

 

Hammer...

I insisted no such thing..Only related what I had seen in my experience..you can do what you want..In my honest opinion..floating gars is harder on the trans than double clutching..if you disagree thats fine.

If your personal preference is to float..go for it..I never brought professionalism or the owners manual into it at all..others did..I didn't...

now since you brought me into it by saying I did then I will say that every company I EVER hired on to as a company driver specified all drivers were to double clutch when upshifting or downshifting and if they were found to be doing otherwise that disciplinary action would be taken...

I'll also say the only clutch I ever lost was the very first day I was assigned to a 3 yr old volvo when I worked for knight and it wasn't the clutch that went..the throwout bearing had never..ever been greased during B service because the factory had never installed the hose and grease fitting onto the throwout bearing..

does that prove anything..no... prefer to double clutch..if I was a fleet owner, my drivers would be required to double clutch and that's because of My Personal Experiences ONLY from sloppy transmissions caused by floating..improper or not..the fact that it can be done improperly and cause that kind of EXPENSIVE damage to a trans is enough reason not to do it or if you are a fleet owner to not allow it to be done..

Clutch 2k..
Trans..what are they 12 grand or more?..hmmmm..I would say its an easy choice

Petey

 

I fixed it, Petey. A public I'm sorry as well; somehow I tied you to the guy on the first page. I understand what you're thinking is, but guys who are hard floating will be hard clutching as well.


Petey[/QUOTE]

 

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and that right there is my point..

clutch..2 grand to replace with labor..
trans..a heck of a lot more..

having been an owner op and having to pay for my own repairs brought a lot of things home to me..I drove the truck to where there was less wear and tear on it as I could and drove it so that whatever wear and tear there was didn't cost as much to repair if it broke..in the case of the clutch/trans it was the clutch that was the cheaper to replace..as such..I never floated..LOL..

The same way of thinking helped me to decide how to spec out the 05 pete I had when I bought it new..it was geared to run 75 mph in 18th gear at the rpm where the engine was at peak torque..if I remember right was around 11 or 1200 on the cat..I wasn't worried about top end speed although gearing it that wasy I'm sure was probably the makings of a triple digit truck but I was thinking more along the lines of best fuel economy for the truck as well as pulling power and least wear and tear on the engine..I told em I wanted it geared so that the engine was at its best rpm at 75 mph..and they did it...55 in cali in 15th if I remember right...Man I miss my pete..somebody kick me again for sellin it...

Petey