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From: "James Harr" bnchmark AT embarqmail DOT com
Date: Thu, 17 Jan 2008 10:37:26 -0500
Subject: RE: (erielack) Correct your U33C/U36C/U34CH models!
"P1040340.jpg" - image/jpeg, 1591x401 (24bit)

Wow, Schuyler really opened a can of worms here! As soon as I read SGL's
post I knew what he was talking about, and I think Randy's response below
outlines it fairly well but I still had to go and look for myself; this was
the first I had heard of this also. The best quick photo I found is the
builders' photo on p. 405 of Erie Power; even then, because it is only a 4"
difference, it is still hard to see. I know exactly what Randy means about
them being push-pull units; I find it odd that the trucks were oriented this
way, but I am sure there was a reason.

I dug out one of my Atlas units and I see that yes, Atlas is on the ball and
oriented the trucks correctly. So, hats off to Schuyler for pointing it out,
and hats off to Atlas for getting it right! I have posted a photo to
indicate what is being discussed here; not the best photo, but I highlighted
the ends of each axle with a silver marker to better see the difference.

Jim Harr




Randy wrote:

Date: Wed, 16 Jan 2008 07:52:51 EDT
From: "Janet & Randy Brown"
Subject: Re:RE: (erielack) Correct your U33C/U36C/U34CH models!

Well . . . we seem to have developed two subjects: the well-known odd axle
spacing on 3-motored trucks, and the previously unrecognized unusual
orientation of 3-motored trucks on GE U33/U34/U36 locomotives.

Yes -- many 3-motored trucks have the center axle offset to accomodate the
motor. BUT -- those 6-motored locomotivess usually run/ran with the offset
center axles closer to the adjacent ends of the locomotive.

EMD's flexicoil 3-motored truck introduced evenly spaced axles on the SDs
from 35 on up.

The GE application was more interesting. The trucks used on GE's U33/34/36
shared the offset spacing, but were, for some reason yet unexplored, mounted
to run with the shorter spacing toward the front ("F") end of the unit. I
had never noticed this or seen it mentioned until SGL's posting. Now I
would like to learn the why of the design.

Randy Brown


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