O-Gauge with O-27 curve

BANDOBOGR Forum Member

Somewhere along the way I've acquired 2 pieces of curved track that is O-gauge in rail height and profile, yet 0-27 in curve radius. Photo attached comparing one section with a standard O-31, the one in the rubber roadbed. As you can see, it is dirty from some old layout. The ties are interesting, too. They are not rectangular, but tapered. The wider side is to the inside of the curve. Does anyone know the history of this type of track? Does it date from the 1930's? It could be useful in places where I now have 0-27, and I would not mind getting some more.

B&OBill

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3/30/124:38 PM

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ADCX RobOGR Forum Member SUPPORTING MEMBERDIGITAL SUBSCRIBER

Ives.

3/30/124:58 PM

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BANDOBOGR Forum Member

Originally Posted by ADCX Rob:

Ives.

Ives, never even thought of that! Thanks!

Bill

3/30/127:46 PM

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Former Member

If you look at the ties carefully you'll notice that the wider end, on the inside of the curve, is also lower than the other, narrower end. Actually, the tie is wider because it is squashed lower a bit. What this does is to effectively "super elevate" the outside of the track, banking the curve a bit.

Old O gauge track comes in several diameters: there is an O gauge 27" diameter curve, but it is still high profile O gauge, not to be confused with O-27!

3/30/127:52 PM

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Former Member

as you can see, a lot of work went into making these ties: squashing one end creates the incline, but the ties are made so that the rails step down the incline and stay vertical. somebody put some thought into this. the straight sections are also "banked", presumably to mate with the curves. seems like that would make for a lean on long straightaways?