Steam & Excursion > ORHC - Installation of the Electrical Slip Ring (ESR)

It was cold, it was rainy, it was windy and my hands were shaky BUT for once I estimated the right time and got there just in time and saw the installation of the ESR.  If the videos are a little shaky, sorry, I was cold and also sorry about my finger in the lower left corner of the second video, I wasn't paying careful attention I guess.

I realize the picture is a repeat but it just shows where the electricity will leave the building and connect to the ESR.  Next the control cabin I assume.

JOHN



Edited 2 time(s). Last edit at 09/27/23 13:35 by Jsporseen.

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Thanks for capturing and sharing that, John.

VERY well done, thanks John.   Arlen

A much improved, 21st century improvement over the original ! 

Will there be a tall pole, across the pit from the corner of the building 
where the power is coming from?  Typically, a support cable was pulled
tight across the pit, and the power wiring suspended from the cross-pit
( tension) cable.. The tension cable also kept the torque and related
weights-forces off of the collector-rings assembly, 

​W.



Edited 1 time(s). Last edit at 09/28/23 09:34 by wcamp1472.

Great job.  Thanks, John.

wcamp1472 Wrote:
-------------------------------------------------------
> A much improved, 21st century improvement over the
> original ! 
>
> Will there be a tall pole, across the pit from the
> corner of the building 
> where the power is coming from?  Typically, a
> support cable was pulled
> tight across the pit, and the power wiring
> suspended from the cross-pit
> ( tension) cable.. The tension cable also kept the
> torque and related
> weights-forces off of the collector-rings
> assembly, 
>
> ​W.

I have no idea as to an answer to that question.  Wait and see, I guess, or maybe I can contact people who know a lot more than I do.

JOHN



Edited 1 time(s). Last edit at 09/28/23 12:33 by Jsporseen.

I say....

Wait and see...
Dont bother them by asking; my curiosity, mostly.

 A clue would be a new pole showing up on the property.
And hole-drilling truck, too

However, the highway bridge overhead is an intriguing 
solution, also.  ( my presumption is needed permission from the 
governing highway authority... Bore a hole, fill threads with 
industrial epoxy...ram in the eye/hook; after epoxy sets,
attach the cable, & tighten her up !)

​W.

The costs of having a connection to the bridge engineered would be more than the cost of a pole

How the power connection looked in 1946:

https://orhf.org/wp-content/uploads/2020/10/Turntable-at-Brooklyn-Yard_May1946-smaller.jpg

Three terminals imply three-phase power?  Unfortunately the strung cables don't show.
Also note that the railings on the bridge are less obtrusive than the later white fence.

 



Edited 1 time(s). Last edit at 09/28/23 22:20 by Elesco.

Elesco Wrote:
-------------------------------------------------------
> How the power connection looked in 1946:
>
> https://orhf.org/wp-content/uploads/2020/10/Turnta
> ble-at-Brooklyn-Yard_May1946-smaller.jpg
>
> Unfortunately the strung cables don't show.
> Also note that the railings on the bridge are less
> obtrusive than the later white fence.
>
>  
If you follow the link above you will see the Brooklyn turntable with its fence made out of pipe.  The picture below shows a wooden fence on the TT so obviously it was changed between 1944 and when this picture was taken.  I was talking to a person at the ORHC recently who I think knows of what they speak and was told that a final decision on the type of fence had not been made yet.  I think that the walkway will be grating of some kind similar to what you see on the Hawthorne Bridge.

JOHN

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Volunteered this afternoon and snapped these pics. (they are in no particular porder) - one is panoramic
 sorry one picture is not rotated properly     

JOHN



Edited 4 time(s). Last edit at 10/02/23 00:00 by Jsporseen.

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Three More


JOHN



Edited 1 time(s). Last edit at 10/01/23 23:41 by Jsporseen.

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3 phase plus ground.

dcautley Wrote:
-------------------------------------------------------
> 3 phase plus ground.

Thats right.  Sorry I didn't mention it.

JOHN

I like the simplified anti-rotation arrangement for the fixed
carbon brush holder --- the Big Orange cylinder.

The interior ( 3-phase) rings connected to the TT, are the only internal
moving part, as the 'table rotates.  A very clever design, and simpler than
the 'original'.  

The support cable from the building serves a dual purpose:
it carries the electrical conductors --- strain-free--- and keeps the
electrical brush assembly from rotating!
Very well thought-out.

​W.
 
 

wcamp1472 Wrote:
-------------------------------------------------------
> I like the simplified anti-rotation arrangement
> for the fixed
> carbon brush holder --- the Big Orange cylinder.
>
> The interior ( 3-phase) rings connected to the TT,
> are the only internal
> moving part, as the 'table rotates.  A very
> clever design, and simpler than
> the 'original'.  
>
> The support cable from the building serves a dual
> purpose:
> it carries the electrical conductors ---
> strain-free--- and keeps the
> electrical brush assembly from rotating!
> Very well thought-out.
>
> ​W.
>  
>

One more (and last, at least for me) picture of the ESR.  I think it is the clearest of the ones I have taken because of the background.  It also helps me understand Wes's explanation better.

JOHN 



Edited 1 time(s). Last edit at 10/05/23 08:53 by Jsporseen.

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