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Track Mobile - Members Prototype Photographs. - The Prototype. - Your Model Railway Club
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 Posted: Tue Dec 1st, 2015 01:20 am
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BCDR
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Another critter. The Museum crew were moving a passenger car from one siding to another when I was at the museum recently using a "Track Mobile", a cross between a jeep and a hydraulic trolley with motion rods. By the look of things the wheels are on hydraulic arms that could be lowered to move it around sans rails. Great fun.



The "Track Mobile" being started up.



Knuckling up. Bit of a mismatch in heights.


 
That's better!



And away we go.



And back we go.

Nigel



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 Posted: Tue Dec 1st, 2015 01:47 am
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sparky
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Something unusual .  Thanks Nigel.:)



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 Posted: Thu Dec 3rd, 2015 02:43 am
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BCDR
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Did a bit of research on the critter. Whiting Equipment used to make them, Trackmobile is now made by the Marmon Group. They have been around since the late 1940's. The one at the museum is a 5TM model. 10,000 have been put into service world-wide according to their website. The current models have amazing tractive power, 27,000-49,000 lb depending on the model. That coupling head is a lot more complicated than it looks, raising it actually pushes the Trackmobile wheels down on the rails using the weight of the car being pulled, giving it a lot more tractive effort than it should have for its weight.

For those modelers interested, Broadway Limited Imports (BLI) do a model in HO, given the loading gauge it wouldn't look out of place in 4mm scale. Check out http://www.broadway-limited.com/trackmobileho.aspx

One of my favorite stores - http://www.modeltrainstuff.com/Default.asp - has them at $60 US DC, $90 US DCC. There is a post on YouTube of a DCC sound conversion. Live frogs required on turnouts though, given the short wheelbase of these units. This is a 4500TM model suitable for the 1990's.

I need a 5TM for the mid-1950's so it looks like some improvisation will be called for (small motor bogie and a Willis jeep body comes to mind).

Nigel



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