Precision Scale Flex track

tstr10Precision Scale introduced its On2 flex track in one yard lengths in mid-1983.

The track consists of an injection moulded tie (sleeper) base strip of 21 ties of random irregular lengths with moulded spike heads holding nickel silver code 70 rails. The track gauge typically ranges between .508″ to .512″ on measured samples.

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Typical rail dimensions.

The tie base material is believed to be a Delrin type polymer. The dimensions of a typical tie are: 1.279″ long x .153″ wide x .103″ thick on .406″ centres (scale : 5′ 4″ long x 7.3″ wide x 4.9″ thick on 19½” centres).

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This deliberately foreshortened view of the track clearly shows the irregular tie ends. The yellow arrows show the length of one of the tie strips. The dimension from the inside edge of the bottom of the rail to the outside of the tie varies from .377″ to .419″ on one side and from .374″ to .422″ on the other.

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This underneath view shows the single bars connecting adjacent ties. Experience has shown that care needs to be taken when laying this track to ensure that the ties are as perpendicular to the rail as possible, and not angled, to avoid reducing the gauge of the rails. This is especially important on curves, and when running the larger Forney type locomotives.

 

 

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2 thoughts on “Precision Scale Flex track

  1. Terry, Thank you for the great information!! I have sold this track for years and have never heard any negative remarks .. Precision Scale has always done a great job providing a great product .. Again Thank you for taking time to do the very informative review, Terry

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