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7¼" gauge in the garden

Locomotives

 

POEM

Other pages of interest about POEM: The Diary and Tracks I have run POEM on

A "Baldwin-style" 2-8-0T+T (combined side tank and tender loco) built by Murray Lane, Howick, NZ.

POEM was designed for a railway at Manu Ariki Marae a few miles north of Taumarunui in the central north island of New Zealand. She was to be able to haul a load of 54 adults up their 1 in 100 gradient, including a short stretch of 1 in 40 on a bend. Due to a lack of suitably trained staff at the line they decided not to buy the loco in the end and Murray retained her for himself. The railway is still open and now extends to just over 3km (just under 2 miles), or a 25 minute run.

  • POEM is unusual in that the builder (Murray Lane) combined features of several different locos to build this one. It is vaguely reminiscent of a World War I American ALCO or Baldwin trench loco, but it is a 2-8-0, not a 2-6-2.
  • POEM is a combined side tank and tender loco making it more like a sugar-cane loco. There were no eight-coupled sugar-cane locos in Fiji, though there were still a few in Java (as of 2006 and most of those were German-built).
  • POEM uses Allan straight-link valve motion, which was unusual on full-size locos and even rarer on miniature locomotives.
  • POEM will have to be repainted, it simply doesn't look right to have a blue and purple steam loco. That said, many of the sugar-cane locos in Java (and Australia) were painted some fairly garish colours.

Murray was originally going to build a model of Palm Oil Estates Management (P.O.E.M.) railway locomotive #3 but she would've been too small for the intended use so he changed the design to the semi-freelance 2-8-0; but he kept the name POEM.

Murray said that POEM has been running for about five or six years and he has rebuilt those parts that were not satisfactory, so there is little chance of it developing a fault that he hasn't already uncovered. For instance he re-made slide valves as the original phosphor-bronze ones distorted and he made new cast-iron ones. Murray is a superb engineer and there is no faulting his workmanship.

This is a loco built for hard use and is not a finescale model. The paintwork is a bit tarnished in places but the underlying loco is in very good condition.

Specifications

Mechanical

Wheel arrangement 2-8-0
Cylinder bore & stroke 70 x 94mm
Length of engine 2085mm
Total length with tender 3675mm
Height 900mm
Width 600mm
Engine weight empty 490kg
Engine weight loaded 567kg
Tender weight empty 180kg
Tender weight loaded 360kg
Wheel diameter - driver 166mm
Wheel diameter - pony truck 114mm
Wheel diameter - tender 275mm
Fixed wheelbase 615mm
Water capacity 120 litres
Coal capacity 35kg
Boiler
Type Briggs
Capacity 30 litres
Internal diameter 200mm
Total length 1200mm
Length between tube plates 843mm
Grate size 300 x 294mm
Fire tubes (20 off) 19mm OD
Ash pan 330 x 320 x 100mm

I will probably repaint POEM in the same scheme as VICTORY on the Bredgar & Wormshill Light Railway:

I may also take the opportunity move the headlight to the top of the smokebox and to rename her (to PETER after my father). If I do, I might move the nameplates to the side-tanks.

John Bremner and I spent an hour or so discussing our discoveries so far on POEM.

  • There is some quite bad surface rust under the flare on the tender sides. This will need to be rubbed down and repainted.
  • John made up a prototype (crude) replacement bracket for the regulator that swaps the pivot and rod holes around thus making the regulator work the "correct" way.
  • After a quick chat with John he made up a new headlight bracket to mount it on top of the smokebox.
  • The chimney looks slightly too short to my eyes.
  • Both John and I agree that the cab sides are too low. We're looking at options to raise the floor of the cab to the tops of the frame - about 70mm. This should make the proportions about right for the Baldwin/ALCO originals.

 

 

 

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