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E7s on 130' turntable

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E7s on 130' turntable
Posted by ndbprr on Wednesday, February 3, 2021 8:24 PM

Anybody have experience with turning an A and B E7 pair on the walthers 130' turntable?  Will they fit?

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Posted by Ladder1 on Wednesday, February 3, 2021 8:53 PM

If my math is correct, the turntable is almost 18 inchs in length.  My E7s are a little over 9 inchs long.  Each. Not counting the couplers

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Posted by RR_Mel on Wednesday, February 3, 2021 8:55 PM

My two HO E7s AB are 9½” long each and my 135’ CMR turntable is 18⅝”.  I haven’t tried them but there would be a bit of over hang on my 135’.


 

Mel



 
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I'm beginning to realize that aging is not for wimps.

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Posted by gmpullman on Wednesday, February 3, 2021 8:57 PM

I just tested my A-B pair of L-L/Walthers E7s on the 130' Diamond Scale turntable and there's about 5/16" of rail remaining clear at each end. The pilot and coupler overhang a bit but there's plenty of room on the bridge itself.

Ed

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Posted by doctorwayne on Wednesday, February 3, 2021 9:07 PM

My E-units are long gone, and I don't have a 130' turntable, but as long as the outermost wheels of both units will fit onto the rails of the turntable (and there are no items around the turntable's circumference which might impede the turntable from passing), everything should work just fine.
If I'm not mistaken, that's one of the reasons that the New York Central's Niagaras had centipede tenders, as the combined wheelbase of loco and tender fit onto the turntables rails, but the tender's back-end extended beyond both the back-most wheels and also beyond the edge of the pit.
Had the tender been on 6-wheel trucks, they would have been closer to the ends of the tender, creating a total wheelbase (engine and tender) too long for the turntable.

Wayne

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Posted by gmpullman on Wednesday, February 3, 2021 9:47 PM

doctorwayne
If I'm not mistaken, that's one of the reasons that the New York Central's Niagaras had centipede tenders  — 

I can't put my finger on the exact location(s) but there was at least one turntable on the PRR where "rail extension ramps" were clamped to one end of the TT bridge rails and the last tender wheels were run up them and elevated above the radial tracks.

It was possibly for the S1 which had a wheelbase of 123' 9-1/4".

[edit]

Found it!

The leased Santa Fe 2-10-4s in Columbus, Ohio.

Regards, Ed

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Posted by RR_Mel on Wednesday, February 3, 2021 10:34 PM

That sir is a full bridge!!!


Mel



 
My Model Railroad   
http://melvineperry.blogspot.com/
 
Bakersfield, California
 
I'm beginning to realize that aging is not for wimps.

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Posted by gmpullman on Wednesday, February 3, 2021 11:52 PM

RR_Mel
That sir is a full bridge!!!

And a clever solution Yes

More about the story of the Santa Fe 2-10-4s in Ohio here:

http://www.columbusrailroads.com/prr%20santa%20fe.htm

Regards, Ed

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Posted by SeeYou190 on Thursday, February 4, 2021 12:19 AM

gmpullman
More about the story of the Santa Fe 2-10-4s in Ohio here:

Thank you for the link Ed. That was interesting to read.

-Kevin

Living the dream.

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Posted by gmpullman on Thursday, February 4, 2021 12:50 AM

SeeYou190
That was interesting to read.

Glad you found it interesting, Kevin.

I hesitate to hijack a thread but I have often maintained that there is plenty of "modeler's licence" when it comes to answering the old "you would never see that in real life" comments made by some stalwarts.

Sure, it may have been an unusual event or even a one-time-only affair but there were situations where you might see a Reading T-1 on a PRR train crossing the Rockville bridge or a Union Pacific Big Boy on the New York Central (they were built in Schenectady, after all).

Just sayin' if a fellow had a hankering to run some big Santa Fe steam in the east, you could justify it, even if fot only a short time.

Cheers, Ed

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Posted by ndbprr on Thursday, February 4, 2021 7:57 AM

I knew it would be close. Planning a PRR division point. Half the rr will have catenary and half steam and diesel.  Thought about a wye but not possible due to space. Only concern now is the coupling distance on p2k engines which can be altered with 48" radius curves planned

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