When the line was constructed, the track had been light, using flat bottom rails spiked directly to the sleepers.

These were connected to the mill via lightly laid tramways using bridge and flat bottom rail.

Many railways preferred a flat bottom rail section, where the rails could be laid directly on the sleepers, representing a marked cost saving.

Flat bottom Rail Rail having the lower portion of the rail wider than its upper portion.

The railway companies became persuaded that the traditional bullhead forms of track needed revision, and after some experimentation a new flat bottom rail format was adopted.

He made some comments regarding signal positions and observed that the track was broad gauge on cross sleepers "with double I rails": flat bottom rails.

The tramway was relaid with flat bottom rails on wooden sleepers allowing a locomotive to be used on the line to Stepaside.

The original track on the branch was 65 lbs per yard flat bottom rail in 24 feet lengths fastened direct to cross-sleepers on 12 inches of ballast.

The trackwork is finer scale than the ubiquitous code 100 flat bottom rail seen on many other layouts but, by design, we are still able to run rolling stock without much modification.

The line was originally laid with flat bottom rails weighing 42 lbs. to the yard; many of these remain in use and it is doubtful if weighed today whether they would go to 36 lbs. to the yard.

Flat bottom rails were still seen as undesirable for British main line railway use, despite their successful use in North America, although some lightly operated British railways used them, generally spiked direct to the sleepers.

PECO STREAMLINE SM32 TRACK Peco SM32 track is a plastic sleepered, flexible track which represents a typical 16mm narrow gauge, wood sleepered track with flat bottom rail.