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 Post subject: compressed air motor
PostPosted: Sun Oct 27, 2013 10:46 pm 
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Joined: Mon Apr 16, 2012 4:53 pm
Posts: 270
Location: Ringgold GA
Anybody have any info on compressed air mine motors like they used at homestake?

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 Post subject: Re: compressed air motor
PostPosted: Mon Oct 28, 2013 2:32 am 
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Joined: Thu Jun 04, 2009 6:13 am
Posts: 232
Location: New Zealand
Like one of these? What do you need to know?

Chris
in New Zealand


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 Post subject: Re: compressed air motor
PostPosted: Mon Oct 28, 2013 7:39 am 
Ok, where did you get that?


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 Post subject: Re: compressed air motor
PostPosted: Mon Oct 28, 2013 9:21 am 
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Joined: Mon Apr 16, 2012 4:53 pm
Posts: 270
Location: Ringgold GA
Yep thats what I'm talking about. What psi did they operate at? How many pounds of air did the tank hold and how long would it run on one tank of air?

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 Post subject: Re: compressed air motor
PostPosted: Mon Oct 28, 2013 11:04 am 
It could probably run for a few hours, depending on the amount of traffic it had to haul.


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 Post subject: Re: compressed air motor
PostPosted: Mon Oct 28, 2013 11:17 am 
It could probably run for a few hours, depending on the amount of traffic it had to haul.


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 Post subject: Re: compressed air motor
PostPosted: Mon Oct 28, 2013 4:06 pm 
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Joined: Tue Sep 16, 2008 6:51 pm
Posts: 1423
Location: SW Indiana
http://www.douglas-self.com/MUSEUM/LOCO ... irloco.htm

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 Post subject: Re: compressed air motor
PostPosted: Mon Oct 28, 2013 7:08 pm 
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Joined: Fri Jul 15, 2005 2:34 pm
Posts: 6906
Location: Within 60 Miles of the Northern Anthracite Field
Wow nice model! What scale is that?

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 Post subject: Re: compressed air motor
PostPosted: Mon Oct 28, 2013 9:22 pm 
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Joined: Mon Apr 16, 2012 4:53 pm
Posts: 270
Location: Ringgold GA
Doug thanks for the link.

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 Post subject: Re: compressed air motor
PostPosted: Tue Oct 29, 2013 3:45 am 
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Joined: Thu Jun 04, 2009 6:13 am
Posts: 232
Location: New Zealand
Glad Doug did the link for you, I was going to dig out the '84 Narrow Gauge & Short Line Gazette article on them.
I built that short tank Motor in'98 all brass except the wood part on the seat bumper. Fully working Stevenson valve gear, working throttle, reverser, whistle valve and gate valves. Weighs over 11 pounds and is 1" scale. Not 18" gauge unlike the prototype, runs on G gauge track 45mm which I think is about 21.25" really a compromise. I didn't build the driver, he was a plastic toy figure mastered for me by the very talented modelbuilder Joe Crea of Denver.
The orecar trailing is also brass, totally scratchbuilt from cars on display at the Empire Mine State Park in Grass Valley Calif.
Both took 1st place at SLC National NG Convention in Sept 2001

Chris
in New Zealand

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 Post subject: Re: compressed air motor
PostPosted: Tue Oct 29, 2013 6:17 am 
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Joined: Mon Apr 16, 2012 4:53 pm
Posts: 270
Location: Ringgold GA
Excellent job on the model Chris. It looks like the tank pressure was 800 psi and the working pressure is 150. I still haven't found any info on the tank volume or how long the would run on a charge.

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 Post subject: Re: compressed air motor
PostPosted: Tue Oct 29, 2013 10:23 am 
So it runs?


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 Post subject: Re: compressed air motor
PostPosted: Tue Oct 29, 2013 2:14 pm 
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Joined: Fri Jul 15, 2005 2:34 pm
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Location: Within 60 Miles of the Northern Anthracite Field
Outstanding!

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 Post subject: Re: compressed air motor
PostPosted: Tue Oct 29, 2013 3:21 pm 
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Joined: Mon Jun 20, 2005 11:33 pm
Posts: 3088
Location: Above the Sterling Hill Mine
That is motor is awesome! Building that would have been the ultimate discussion in the 'mining projects' forum! Very neat! You should make a video of that running, I'd love to see it.

Miner Greg


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 Post subject: Re: compressed air motor
PostPosted: Wed Oct 30, 2013 6:51 am 
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Joined: Thu Jun 04, 2009 6:13 am
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Location: New Zealand
I'm sorry to say that back in '98 I was time pressed on building it and the electrical pickups were never fitted so even though there is a 40mm Can motor and 45:1 gearbox mounted. I started milling the wheels in March and only just scraped by at the middle of August before leaving for my Nth American trip .
I'm too past it now to mess with it and I have nowhere to run it anyway. I always figured she would look great in a workshop diorama one day.

As to NG's query, there is no mention in the Gazette article on cu ft capacity of the tanks, Don Gleason out in Oregon may know, he owns one of the larger tank 5 tonners. Now I think he only charged his to about 150 + psi in deference to the age of the tank and that allowed about three trips on his short line. There is a short tank 3-1/2 ton version like my model at the Colorado Springs Western Mining Museum that they operate on occasion. It may pay to ask there as the guide was reasonably knowledgable about them.

As for a mining projects essay, are you interested in my pictures of the Mancha Motor I'm building from scratch?

Thanks for the comments.

Chris
in New Zealand

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