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My original intent with 55n3 was to build 1870s three foot narrow gauge. Then someone asked if On30 Bachmann equipment could be used for 55n3 and got diverted to that tangent.
Scale55 is the only scale that early three foot narrow gauge works easily. Being HO gauge the use of HO mechanisms and locomotives come into play.
HO Locomotives for Pioneer Scale55
The MDC/Athearn 2-6-0 is a good fit for 55n3. The straight boiler is typical of early D&RG locomotives. New smaller drivers are available from UK suppliers.
This is my IHC-Rivarossi 4-4-0 merge with a Roundhouse 4-4-0. The wagon top boiler can be fit to the 2-6-0.
Wondered if my stockpile of IHC/Rivarossi 4-4-0 could be used as 55n3.
Found a early porter drawing and compared. Yipes! We have a seminal 4-4-0. Sound can be added like my HO Bachmann
Sn3 PBL Freight Cars as Pioneer Scale55.
The PBL Sn3 cars are a close match to the Ohio River and Western Box and other early narrow gauge boxes. The Sn3 cars are more about the gondolas and cattle cars.
Making gons is very labor intensive compared with house cars.
The PBL Sn3 trucks can be regauged to HO with spacers and tubing.
The PBL Sn3 gondolas just have to be "two-boarded".