Re: [CBQ] E's mued to F's?

["Philip Weibler via groups.io" <pawnbaw=sbcglobal.net@groups.io>]

All -
There were some odd-ball arrangements early on but by the mid-50s the 27 point multiple unit jumper cable was the standard. Basic functions like direction and throttle position were
activated by specific wires. Any combination of locomotive models or builders could be "MUed" When the locomotive engineer put the throttle in 'Run 8' all of the MUed units would
go to full throttle and contribute all they had to pulling the train. An SD45 could be coupled up to a MU equipped switch engine and they would be just fine working together.
By the '60s any new or reworked locomotive would have "automatic transition" from series to parallel to maximize generator/traction motor output. Older FT-F2 locomotives had manual
transition which required the engineer to select series or parallel based on load and speed. This is why you'd see older models in the lead when working with newer models.
PAW

On Thursday, September 3, 2026 at 11:13:10 AM CDT, MALCOLM GAULD via groups.io <docc.heriots=gmail.com@groups.io> wrote:


The Q used a number of sets of  F units ABA on the California Zephyr from its delivery in 1949 until EMD had capacity post WW2 to deliver E units. They were in Silver/Aluminium and had 9xxx numbers
They were regeared for freight and I assume steam boilers removed, repainted to grey but kept their 9xxx numbers.
Kato did the silver set for its CZ sets and also the units in greyback livery
There will be those with way more knowledge than me on the group.
The BRHS photo collection has images of the F units in Silver and Greyback livery

Best regards 
Malcolm Gauld 
Scotland 




Sent from Outlook for iOS
From: CBQ@groups.io <CBQ@groups.io> on behalf of Jeff Kling via groups.io <tvrrproto48=sbcglobal.net@groups.io>
Sent: Thursday, 03 September 2026 16:05:32
To: CBQ@groups.io <CBQ@groups.io>
Subject: [CBQ] E's mued to F's?
 
Hello, I'm new to the group. My friend Steve Woods passed away and left me with his n scale collection. He was a big fan of the Burlington. I model in Proto48 but decided to put together a small n scale layout. He loved passenger trains and so I have lots of E5's, 7's and 8's. He had a single F3B. Not certain what to do with it. I asked AI if the Burlington ever ran a F3's with the E's and received an answer that it was impossible because the MU wiring is different and because the E's had two prime movers and the F only one. Obviously AI is not the one to turn to. Any thoughts?
 
Jeff Kling
Fernley, NV

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