Re: How would you do it?


"Zeke" <0000@*remove*spro.net> wrote in message
news:e6tis4$jh4$1@xxxxxxxxxxxxxxxx

"Gashauler" <swordfish2@xxxxxxxxxxx> wrote in message
news:1_udnQ_ubYH2tA_ZnZ2dnUVZ_oidnZ2d@xxxxxxxxxxxxxx


Old school is let the engine work for you. If it's pulling strong at 1100
then leave it there. No need to shift more than you have to. Alot of
times the sound of the engine fools you thinking it's working better at
higher rpm's. If it drops down more than 1100 then it's time to down
shift. Also taking it up to 2100rpm is what is called running against the
peg. Not a good practice. I used to downshift about 1150 and then the
truck would come into the power range just fine. That was with a heavy
truck of about 105,000lbs and a 6% grade. I also used progressive
shifting while I was on the surface streets of the city. If not a relaxed
pattern of 1950rpm or so and shift is easy on the equipment and will get
you there in the same amount of time.


Sometimes when I let it pull right at the bottom of the torque band, the
engine fan coming on will be just enough of a drag to make downshifting
necessary.

I always use the progressive shifting while on surface streets. Those C15
Cats have tons of low end torque. I always got to shake my head at the
guys that have to run it up against the peg in every gear, especially when
in or around a truckstop.

We've run cummins, cats, and detroits. I really liked the old 444 cummins
with the factory authorized mod which changed the turbo to a larger one and
bumped the HP to 450. You'd think that 6 HP wouldn't make a difference but
that thing pulled like no other. I didn't care for the cats for the simple
reason that we were restricted to only the cat dealer for repairs. And they
always required that the tanks (we ran truck and trailers so the truck had a
5000 gallon tank on it) be de-gassed which was a pain in the ass just for
some minor repairs. The detroits didn't show me that much. They we're ok but
nothing to write home about.

I couldn't believe when we sold our trucks. The company would replace the
power units every 5 years. They had low mileage but hard city mileage on
them. The sold the truck for anywhere from $55,000 to $45,000. They got a
good return on their investment.

You're right about the peg. Also we would laugh at a driver that had to
"shotgun" the engine on upshifts. He's the same driver that runs the engine
brake to speed his shift. I always wondered for what reason would anyone
want to speed up their shift. It just goes back to these schools that do not
teach the new driver how to take care of the equipment. They must teach the
driver to hurry so they can spend more time on the CB.


.

Relevant Pages

  • Re: How would you do it?
    ... If it drops down more than 1100 then it's time to down shift. ... I used to downshift about 1150 and then the truck would come into the power range just fine. ... Sometimes when I let it pull right at the bottom of the torque band, the engine fan coming on will be just enough of a drag to make downshifting necessary. ... I always got to shake my head at the guys that have to run it up against the peg in every gear, especially when in or around a truckstop. ...
    (misc.transport.trucking)
  • Re: How would you do it?
    ... He's the same driver that runs the engine ... want to speed up their shift. ... You are pulling a grade in a gear just ... This is especially true if your truck has a 9 speed ...
    (misc.transport.trucking)
  • Re: Topper
    ... How come you don't talk about your so called gasoline hauling job anymore? ... He was told by his boss to take the truck around to the ... hour 365 day business and the new guys get stuck with the worst shift. ... hire with no experience and when they do they train the driver then work the ...
    (misc.transport.trucking)
  • Re: How would you do it?
    ... rest of you shift at say 1500 rpm or let it lug all the way down to 1100 ... Old school is let the engine work for you. ... No need to shift more than you have to. ... I used to downshift about 1150 and then the truck would come ...
    (misc.transport.trucking)
  • Re: California drivers can be denied registration for idling citations
    ... Not in California, and in a commercial vehicle, more widely known as ... California began enforcing Jan. 1 a new idling limit that no longer ... prior to January 1, 2008, idling of the primary diesel engine is ... for resting purposes while a truck is parked anywhere in the state. ...
    (misc.transport.trucking)