From: m35products (m35prod@optonline.net)
Date: Mon Mar 24 2003 - 19:27:09 PST
I would like to pass on two warnings regarding this shifting thread. Neither
of these warnings is my own, as I know very little about transfers,
transmissions and associated science. Warning #1 comes from an old driver's
instruction book for the International Scout 4X4: Never use low-range in
two-wheel drive, always use 4-wheel drive, because it puts too much stress
on the axle shafts. Warning #2 Never shift a synchro-equipped tranny
without using the clutch, as it does something bad to the synchros. I, too,
have shown off to my friends my ability to go up and down through the gears
without the clutch. It's pretty easy to do, including getting back into 1st.
apb
----- Original Message -----
From: "Ronzo" <rojoha@attbi.com>
To: "Military Vehicles Mailing List" <mil-veh@mil-veh.org>
Sent: Monday, March 24, 2003 7:39 PM
Subject: Re: [MV] M35 Air shift ??
> Hi Joe:
> Nope you got it right.... An 'experienced' (he'd kick my ass if I
called
> him old and crusty) motor pool CWO took me out 2 summers ago and showed me
> how to 'drive' vs. 'operate' a deuce. One of the things he showed me was
> using the low range of the gear case when going less than 25 mph and then
> when reaching that speed barrier, pulling the trans out of 5th, pulling
the
> range lever from 'LOW' to 'HIGH' and stuffing the tranny into 4th.
> It is not driven as a conventional 2 speed rear end. It IS used to
> expand the conventional 5 speed tyranny's range by using what the
> manufacturer gave the Gov't to work with. The CWO points out the mission
of
> the driver is to keep the vehicle in motion to complete the mission.
> Understanding the drive train and how it works and CAN be operated is the
> difference between an operator and a driver. Like the vehicle recovery
> manual shows the method of 'unstucking' a vehicle if it's not equipped
with
> a winch or a winch equipped vehicle is unavailable.
> He pointed out that only about 40% of the 'motor T' types he and his
> people showed this method to could master it. They could keep trucks and
> loads moving when other folks were stopping and restarting in first or
> slipping the clutch with lots of throttle and eventual damage to the
clutch,
> lugging the engine in the wrong gear or spinning wheels since the power
> wasn't being matched to the tractive surface. It does take a lot of strain
> off the truck when operated this way, versus staying with just 5 gears.
> He also demonstrated starting out in 1st 'L' using the clutch and
going
> up through 6 'shifts or gears' and back down to 2nd without touching the
> clutch, just the throttle pedal, ear and a light grip on the shifter. He
> pointed out that he could get back into 1st 'L' without the clutch only
> about 50% of the time. He demoed it both on road and off, going uphill and
> down. That whole shifting sequence I have not tried and probably will not
> master. I don't have an understanding motor pool CWO behind me to repair
my
> truck or point out my errors while I try to learn his tricks. But school
> goes back into session during our Weare, NH summer rally again for 5 days.
> As the saying goes, it's not for everyone. But handy to know.
>
> Ron
>
>
>
> ----- Original Message -----
> From: "GOTAM35" <gotam35@sc.rr.com>
> To: "Military Vehicles Mailing List" <mil-veh@mil-veh.org>
> Sent: Monday, March 24, 2003 5:43 PM
> Subject: Re: [MV] M35 Air shift ??
>
>
> > I don't want to discourage anyone from doing something new, but my
> > understanding, limited as it is, about two speed rear ends and the m35
> > transfer case leads me to the following conclusion:
> >
> > With a two speed rear end I think the gear ratios are much closer than
the
> > difference between the high and low of the transfer case. I have never
> > tried to use the transfer case to achieve a selection of gear ratios
> > because, unlike the trucks I have used with the two speed rear, you
would
> > have to shift the transmission to a different gear each time you shifted
> the
> > transfer. When using the 2 speed rears, for example, you shift from 1st
> > gear high to 2nd gear low, then to 2nd gear high. If I understand the
tag
> > on the dash of my deuce, if you have the transfer in low range 5th gear,
> you
> > would have to shift to 4th (?) high, then to 5th high. Am I missing
> > something? Just something to think about.
> >
> > Joe Trapp
>
>
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This archive was generated by hypermail 2.1.4 : Wed Apr 23 2003 - 13:25:56 PDT