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RE: (ET) Transaxle Service
- Subject: RE: (ET) Transaxle Service
- From: "Elie, Larry (L.D.)" <lelie ford com>
- Date: Wed, 12 Apr 2000 09:43:45 -0400
- Sender: owner-elec-trak cosmos5 phy tufts edu
I agree
Monty, this is becoming an interesting thread; particularly;
This is an interesting thread. It got me reading the
"Peerless Mechanic's Handbook
for the ElecTrak Garden Tractor" that was buried
inside my Electrak Service Manual.
<snip>
E-8M 1216
E-10M 1216
E-12 2318 - although only
one drive belt instead of the two on the E-15 and -20
E-15 2318
E-20 2318
The 2300 also had a Duo-Trak (trademark Illinois Toolworks)
limited slip differential
(not a locked differential). The manual
says:
"It seems that some people are expecting this
differential to perform as a "locked
differential" and the following information is given to clear
up any confusion that may
be present.
The standard bevel gear differential is a torque balancing
device in which the low
tractive and high tractive wheels deliver the same amount of
torque. Therefore, when
you experience low traction on one wheel the other wheel
delivers exactly the same
traction. The extreme example of this is when one wheel
spins freely and the other
wheel does not move, or in other words, you do not have any
traction to move the
vehicle.
The "Limited Slip Differential" is built in such a manner that
an internal drag is
developed in the differential gears so that the driving torque
is more uniformly
distributed between the two driving wheels. This gives
superior traction (at least
50% more) in marginal situations such as snow plowing, turning
on the side of a hill,
hill climbing and operating on wet grass.
However, this feature cannot be demonstrated by jacking one
wheel off the ground
or placing one wheel in an extremely slippery
position.
To sum it up, the "Limited Slip Differential" will allow the
operator to use his unit in
some situations where the unit with a standard differential
cannot be used. At the
same time there are certain extreme conditions in which the
"Limited Slip Differential"
cannot be expected to provide traction.
It should be noted that the "Limited Slip Differential"
retains the feature of allowing
the outside wheel to rotate faster than the inside wheel when
making a turn. This
is the main disadvantage of a "Locked Differential" which
results in very difficult
steering."
<snip>
"
Does this mean ALL 2300
series have a limited-slip differential, or that it was an option of
some sort? It specifically states that you
can't just jack up one wheel to find out, but I find is
a bit hard to believe there is
anything like a limited slip in my E12. I have spun too many wheels
pushing snow on ice; it's
always just a one wheel spin. Now I have to look up Duo-Track, there
are many ways to do
limited-slip, and the bevel gear may only be part of the story.
Some involve
friction clutches internal to
the transmission. If so, mine may be worn.
Larry Elie