Bertram

Bertram is an elderly tank locomotive that works for Tri-ang Railways. He is the oldest tank locomotive still in service on the British Isles and the oldest/first locomotive fitted with a taper boiler in history.

Biography
Bertram was built at the London & North Western Railway's (LNWR) Crewe works in 1876 as the sixth TR 2 class 4-2-4WT, better known as "Crimsons".

Livery
Bertram is painted in TR Crimson Lake with the TR "reverse shield" emblem.

Basis
Bertram is a freelance design but could be inspired by the eight 4-2-4WTs built for the Bristol & Exeter Railway (B&ER).

Filming model
Bertram's model is scratchbuilt with the driving axle and valve gear from a Bachmann US 4-4-0.

Trivia
Despite being younger than Vincent, Bertram has been in the series longer.

Bertram is currently the only locomotive that pilots along the Highland line.

Bertram is one of the oldest locomotives fitted with a hopper-type bunker and the first locomotive fitted with a taper boiler.

Prior to his model's construction, the concepts of length changed as he originally was going to be in his original 3D concept was changed to be longer in his final design to cope with the base model's connection rods and allow for a larger well tank.