The attach picture to this topic is a clearance measuring car for acurately
measuring fixed objects along the track,ie tunnels, through bridges narrow rock
cuts. It has arms that are attached to a fixed frame mounted on the centerline
of the car, they are extended out to the standard width of that particluar
section or route of the RR. Then as the train moves along slowly and the arms
strike a fixed object they would fold back till they cleared the obstruction.
At the end of each object,ie tunnel or bridge each arm that has moved is
measured and recorded, then in the office a diagram could be made showing the
cross section clearances for the route. Today we use a laser mounted on the
geometry car that measures clearances, track centers and track conditions.
Pete Silcox, retired civil engineer from CSX Engineering Dept.
--- In [email protected], "David Engle" <rirocket@...> wrote:
>
> I have heard of it, the PRR guys should be much more informed. A similar
> application would be the SP diesels that are assigned to run through the
> tunnels on Donner Pass to knock off icicles and snow banks so there is no
> damage to tall freight cars and ATK domes and hi-levels. They had such items
> as spinning disks in front of the windshields to help clear icicles.
>
> DJE
>
>
> ----- Original Message -----
> From: Peter Vanvliet
> To: [email protected]
> Sent: Wednesday, October 24, 2012 6:20 PM
> Subject: {S-Scale List} Prototype Version of a Clearance Gage
>
>
>
> I had never seen one of these before:
>
> http://www.ebay.com/itm/190741931415
>
> - Peter.
>
>
>
>
> --
>
> Peter Vanvliet (peter@...)
> Houston, Texas
>
> My Model Railroad Site (RSS feed)
> Fourth Ray Software
> Houston S Gaugers
> N.A.S.G.
> --
>
------------------------------------
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/S-Scale/
<*> Your email settings:
Individual Email | Traditional
<*> To change settings online go to:
http://groups.yahoo.com/group/S-Scale/join
(Yahoo! ID required)
<*> To change settings via email:
[email protected]
[email protected]
<*> To unsubscribe from this group, send an email to:
[email protected]
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
