[Shotimes] rod bearings

[Paul Nimz]

Know what you mean about the shifting, 2 and 3 speed axels or the Road
Ranger trannies with their double gears.

Mack built their engines and trannies in house.  Truly a remarkable feat to
use only the 5 speed and to have such a low rpm range.  The final two gears
were very long.

Paul Nimz
'97 TR
'93 EG mtx


----- Original Message ----- 
From: "Donald Mallinson" <dmall@mwonline.net>
To: <shotimes@autox.team.net>
Sent: Thursday, August 14, 2003 9:23 AM
Subject: Re: [Shotimes] rod bearings


> Paul,
>
> Of course, as we have already discussed, the lugging issue
> is for gas engines mainly, although you can lug a diesel,
> they are designed for extremely low rpm use.
>
> When my oldest son still had his own semi, I got to drive it
> in a large parking lot (empty, a good thing!) one day.
>
> I have driven diesel cars before, and even they surprise
> with the small rpm range, but this truck was amazing, you
> barely get going and have to shift, and shift and shift.
>
> By this time I am blasting down the parking lot in fourth or
> fifth gear and going all of maybe 15 mph?
>
> Forgot the redline on the tach, but I think it was something
> around 2800 rpm.
>
> Don Mallinson
>
> Paul Nimz wrote:
> >>The definition, for this purpose of "lugging" is running the
> >>motor at extremely low rpm (generally, for any motor,
> >>between idle and about 1200 to 1500 rpm) and LARGE throttle
> >>openings!
> >
> >
> > I use to drive a Mack 18 wheeler back in the day, that had a redline of
1500
> > rpm and a 5 speed tranny to boot.  Thing would really haul the coal and
it
> > was nice not having to shift all them gears....
> >
> > Paul Nimz
> > '97 TR
> > '93 EG mtx
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