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- o D d i T y - o F - t H e - d A y -
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 Posted: Sat Nov 26th, 2016 12:08 am
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2foot6
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Would probably make a crappy model.:us:.Peter.



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 Posted: Sat Nov 26th, 2016 12:40 am
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oztrainz
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Thank Heavens it's not Smell-o-vision :P



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 Posted: Sat Nov 26th, 2016 03:10 am
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Rick S
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pipopak wrote:
Sears catalogue missing...
Jose.


It's on the blue bracket attached to.the frame and the axle.

Rick



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 Posted: Sat Nov 26th, 2016 02:49 pm
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Herb Kephart
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CROSSING

Now, examine this closely




Darby,PA
The two sets of rails going from the top right to bottom left are SEPTA trolley Rt 11, The other track is the CSX (ex B&O, now CSX I think) line to Baltimore MD. There is a handful of freight trains on the CSX, but a constant flow of SEPTA traffic. Note carefully the flange ways.

Today's test is multiple choice.
Do the SEPTA cars--
1- Have levitation devices on each truck, activated when the car goes over the crossing.
2- Have flanges with notches, corresponding to, and engaging with the CSX rail.
3- Have rubber flanges.
4- Have no flanges at all.
5- Just clump over the crossing.

As usual, first winning answer gets a free years subscription to FreeRails.

I was born and spent the first 25 years of my life close to Darby, and could go check this out for myself-but even though I have a PA concealed handgun license, I would just as soon not visit any where near there now.

Herb



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 Posted: Sat Nov 26th, 2016 08:42 pm
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Rick S
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Herb Kephart wrote:
Wonder how they got propulsion power to the track with the car in post #18? Couldn't rely on the rubber tires rubbing on the rail, so were the tiny wheels just for guidance, and the road wheels ran on the ties? Not a rough ride if you get going fast enough on a motorcycle, I know from experience, but LOOK OUT for the switches!!

Herb


I was wondering about the reach to the brake pedal in the foreground. Was it necessary to dismount the bike to brake?

Rick



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 Posted: Sat Nov 26th, 2016 11:49 pm
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W C Greene
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Yep, the futuristic rending of the "driverless" cars stacked up on the "freeway"...and what we have to look forward to now just reminds me of the well-worn bit from 2001 Space Odyssey....."Open the pod bay doors, Hal"...Please?

In outer space, they can't hear you scream!

Woodrow



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 Posted: Sun Nov 27th, 2016 03:16 am
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Herb Kephart
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No one wants to comment on the flangeways?
I think that I have it figured out-----

Herb



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 Posted: Sun Nov 27th, 2016 04:41 am
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Rick S
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Looks to me like they just roll across.

Rick



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 Posted: Sun Nov 27th, 2016 05:33 am
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Rod Hutchinson
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There are three keys to this:
1. The trolley rail is slightly higher than the CSX rail which lifts the flange on the trolley to the top of the CSX rail.
2. The angle of the crossing is not 90 degrees. That means there is always one flange on each axle sitting correctly in the trolley track.
3. The trolley travels slowly.

At any one time only one trolley wheel cross over the CSX rail. The opposite wheel on the same axle provides directional control. The flange on the trolley rides over the CSX rail.

http://www.subchat.com/readflat.asp?Id=513242&p=1



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 Posted: Sun Nov 27th, 2016 05:44 am
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JawboneFlats
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This is what they call a "double-frogged flange, it was installed at the Main Street grade crossing. The trolley tracks are situated at a slightly higher elevation than the railroad tracks. This allows the trolley to virtually pass over the rail line without making as much contact and without creating as much wear and tear on the surrounding pavement."

This is from a Darby Borough Grade Crossing Study (May 2013)
http://www.dvrpc.org/reports/11012.pdf

Dennis aka JawboneFlats

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