Steam Loco accessories: Compound Air Pump, Turbo Generator, Air Distribution Valve

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Dick_Morris
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Location: Anchorage, AK

Re: Steam Loco accessories: Compound Air Pump, Turbo Generator, Air Distribution Valve

Post by Dick_Morris » Thu Oct 26, 2017 11:27 pm

This is why the railroads would often disassemble new parts bought from outside suppliers and put the drafting room employees to work.
Norfolk and Western Historical Society's (https://www.nwhs.org/archivesdb/) collection has many drawings for these proprietary internal replacement parts. It is relatively easy to search their archive, their copy prices are reasonable, and they respond quickly.

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JBodenmann
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Location: Grover Beach, California

Re: Steam Loco accessories: Compound Air Pump, Turbo Generator, Air Distribution Valve

Post by JBodenmann » Thu Nov 02, 2017 4:43 pm

Hello My Friends
here are some photos of a 1-1/2" scale distributing valve I have in stock. Check the for sale section for info.
Jack
DistValve1.jpg
DistVale2.jpg
DistVale2.jpg (78.08 KiB) Viewed 600 times

Dor_Crank
Posts: 47
Joined: Tue Sep 10, 2013 1:08 pm
Location: LA, CA

Re: Steam Loco accessories: Compound Air Pump, Turbo Generator, Air Distribution Valve

Post by Dor_Crank » Mon Jun 11, 2018 11:08 am

Sorry, i've been away for a while.

Thank you Steve for the drawings and photos of the Distribution Valve.

The URL site below won't go anywhere. I guess they removed it.
http://www.grandscales.com/crosscomp/CrossComp1of3.pdf

I need to re-visit some real locos, preservation place to photograph n measure
the valve and the compound air pumps.

It'll be a bit hard but not impossible to measure the an pump at its top because
it'll be too high on the running board, a museum won't allow anyone to get on it
and i won't want 2 get on it either. Need to go over the fence and sneak a ladder
in at night? NOoooo. Same applies to an turbo generator access.

On the other hand, an air distribution valve measurements s/b pretty simple 2 do.
I'll post what i can here when i get the chance to get those.

I've contacted some big scale (7 1/4 ga) live stm suppliers but so far, no dimensions.
Only one responded to check out Strasburg's #460's. I doubt the museum has dims
and allow anyone to get on the loco. But i did find her generator to be 'Sunbeam' and
not expected Nat'l Pyle's.

Unless they faked their airpump, generator, etc w/o real dimensions, i can't believe
they were able to come up w their castings.
E6s Rt smokebox top.JPG
#460's. Need to blow this photo up 2C the maker's name
E6s air distributor valve.JPG
#460's. Distribution Valve
These photos were taken by me back in 2009 at Strasburg, PA. Since I live in LA, CA, I doubt if i can get back
there again.

Thx again for all of you folks for the contribution help above.

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Short Line Tom
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Location: Römerberg/Germany

Re: Steam Loco accessories: Compound Air Pump, Turbo Generator, Air Distribution Valve

Post by Short Line Tom » Mon Jun 11, 2018 11:55 am

Dor_Crank wrote:
Mon Jun 11, 2018 11:08 am
.......
The URL site below won't go anywhere. I guess they removed it.
http://www.grandscales.com/crosscomp/CrossComp1of3.pdf
....................
Try this link: http://www.grandscales.com/freestuff/fr ... index.html ..... :wink:

Cheers!
Tom
Each new machine was made on a "used" one.

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Greg_Lewis
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Location: Fresno, CA

Re: Steam Loco accessories: Compound Air Pump, Turbo Generator, Air Distribution Valve

Post by Greg_Lewis » Mon Jun 11, 2018 8:55 pm

Dor_Crank wrote:
Mon Jun 11, 2018 11:08 am

...

It'll be a bit hard but not impossible to measure the an pump at its top because
it'll be too high on the running board, a museum won't allow anyone to get on it
and i won't want 2 get on it either. Need to go over the fence and sneak a ladder
in at night? NOoooo. Same applies to an turbo generator access.

...
There's a trick used by photographers to get high angle shots when you can't climb. Get a photo monopod for the camera and use that to hold the camera up in the air (or out to the side). Use the self-timer on the camera to trip the shutter. A digital camera with auto focus makes things easy and, of course, you can check the camera's screen to see if you got what you need. Try to get as straight-on to your subject as you can, and if you know one dimension, you can extrapolate the others. Photoshop has a tape measure tool which I've used for just this purpose, but lacking Photoshop, you can use some basic high school math to figure out dimensions from prints or even on screen. (I still have some side rules I use when I need to do this. Faster and easier than [shudder] math.)
Greg Lewis, Prop.
Eyeball Engineering — Home of non-interchangeable parts.
Our motto: "That looks about right."
Celebrating 30 years of turning perfectly good metal into bits of useless scrap.

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