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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.

August 2008

  POEM's new headlight bracket is done and I have turned down all of the brass valves. We just need to finish fitting the coiled wire grips.

We managed to get the cap and base off of the chimney tube. I am going to raise the chimney by 35mm to be more in-line with the top of the cab - it is a bit "dumpy" at the moment.

We took the cab off and will make a start to raise the footplate. This will help raise all the pipe work up off the ground too and make the whole loco look more balanced.

The chimney is done. We've actually cut the tube longer than originally planned; the proportions of the chimney look so much better. Once the cab is back on we can re-assess the height of the chimney and if necessary trim a bit off of the top; taking the brass cap off is easy enough. Checking with prototype photos, the chimney should be higher than the top of the cab by about the diameter of the chimney barrel.

POEM's new, higher chimney and relocated headlight. Notice in the photos above that the base of the brass cap is roughly level with the top of the dome. We all think the proportions look much better now, but once the cab is back on we can always trim a bit off of the barrel to lower it if we need to.

  Interestingly, John took one of the side tanks off and POEM looks rather nice as a tender loco!
  John and Grant are contemplating the new footplate - which has been raised at the sides.

September 2008

  John Bremner performing somewhat "brutal" engineering on POEM's cab - I didn't have the nerve to do it myself and John does this sort of thing all the time, so "leave it to the experts" I say!
  This is POEM's cab tested-fitted back on (compare the shot below to see how much of the cab has been pruned away). We need to re-fit all of the pipework, injectors etc. under the cab, but a strip down and re-paint is going to be next.

Having seen how it's worked out, we'll probably trim about 20mm out of the barrel of the chimney.

  We are making progress. All of the pipework on the righthand side is back on. It looks a lot neater and is up out of the way of the track. we're now working on the lefthand side. After that it is a bit of a tidy up and we take the boiler cladding off to go for painting along with the side tanks, cab and tender body.

I'll get the chassis steam-cleaned and then we can go around and touch-up the black. I am not prepared to strip the whole loco down to do a bare-metal repaint, it doesn't need it and it is a heck of a lot of work.

October & November 2008

  Not done much recently as John Bremner has moved premises, so POEM has taken a bit of a back-seat.

 

 

Narrow-minded and proud of it

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