Subject:
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Re: An interesting building idea...
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Newsgroups:
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lugnet.trains
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Date:
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Tue, 20 Aug 2002 17:23:11 GMT
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Viewed:
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693 times
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I thought we had someone on .trains from sunny New Mexico? James... you
holding out on us? :)
Now that would take a large layout, a lot of tan base plates, and a ton of
UFO sections for the antennas!
SteveB
In lugnet.build, Roy Gal writes:
> Hi all,
> I just posted pics of an interesting vehicle I am hoping to build. It is a
> special rail-mounted vehicle for picking up and moving the giant radio
> antennas of the Very Large Array (VLA) radio telescope in New Mexico. The
> pics are at
> http://www.brickshelf.com/cgi-bin/gallery.cgi?f=23734
>
> In real life, it has interesting functionality:
> 1. The flat platform area is raised by hydraulics to contact the bottom of
> the metal antenna supports so it can be lifted off the cement piers.
> 2. The vehicle has 4 separate bogeys. It runs on two parallel PAIRS of
> tracks, and is capable of turning 90 degrees.
> 3. The 90 degree turn is achieved by going to the center of a crossing which
> looks like
> | | | |
> --|-|----|-|--
> --|-|----|-|--
> | | | |
> --|-|----|-|--
> --|-|----|-|--
> | | | |
>
> and lifting the entire body slightly off the ground with hydraulics,
> rotating the individual bogeys 90 degrees, and lowering back onto the
> perpendicular track. So, the actual body of the machine doesn't turn, just
> the bogeys!
>
> Maximum speed with the 250-ton dish on board is 4mph. As you can see, each
> bogey has 3 pairs of wheels. There is a generator on board so that the
> electronic refrigeration for the detectors on the antenna can be kept
> running while the antenna is being moved. If I recall correctly, they
> perform 40 hours of maintenance for each hour of use!
>
> I don;t know when I'll get around to actually building this behemoth, so if
> you think its interesting, go for it!
>
> Roy
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Message has 1 Reply:
 | | Re: An interesting building idea...
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| (...) Yeah, I'm holding out: saw it, built it, done that; all to 1:1 scale ;-) I must say, I've never thought of modelling the VLA antenna array. Great idea, Roy. The VLA is located about 45 to 50 miles from where I live. (...) Wheh! More power to (...) (22 years ago, 20-Aug-02, to lugnet.trains)
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Message is in Reply To:
| | An interesting building idea...
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| Hi all, I just posted pics of an interesting vehicle I am hoping to build. It is a special rail-mounted vehicle for picking up and moving the giant radio antennas of the Very Large Array (VLA) radio telescope in New Mexico. The pics are at (URL) (...) (22 years ago, 20-Aug-02, to lugnet.build, lugnet.town, lugnet.trains)
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