Fantastic new title fromFantastic new title from
Boiler (water inside)
Throttle (regulator) Steam line from boiler
Exhaust line from engine to stack Steam chest (valve inside)
Cylinder (piston inside) Piston rod Drive rod
Reach rod to reverse lever in cab
Lifting link Expansion link
Backward r od
Rocker arm through frame
•The basics of steam
• The basics of steam
•Pistons and lubricators
• Pistons and lubricators
• Reversing mechanisms
• Valve gears
•Fuels and burners
• Fuels and burners
• Boiler fittings
• Feedwater systems
A Passio n for St eamA Passion for Steam Small s cale ste am loco motives a nd how they work
Small s cale ste am loco motives a nd how they work
Including an extensive
Including an extensive
gallery of steamers from
gallery of steamers from
the author’s collection
the author’s collection
MARC H OROVIT Z
A Passion for Steam by Marc Horovitz
A Passion for Steamuses a significant section of the extensive Horovitz collection of steam locomotives to provide a photographic panorama of ‘garden size’ steam railway locomotion in all scales, complete with a potted biography and technical details of each model. This book not only traces the post-war development of commercial small-scale steam but also provides a full and accessible explanation of just how the various types of model actually function. To this end the first section of this authoritative work uses accurate and colourful CAD diagrams that, together with pertinent photography and informed text, provides information in a way that is not only very accessible for the new live steamer but a work of reference that will find a place in every hobbyist’s bookcase. The comprehensive gallery section of this inspirational book will, I am sure, be read and reread, not just for the information that it contains, but also for the sheer sensual pleasure of enjoying so many delightfully photographed steam locomotives.
Peter Fenn’s Mt. Gretna 4-4-0
The Mount Gretna Narrow Gauge, an offshoot of the standard-gauge Cornwall &Lebanon, was a two-footgauge line in Pennsylvania. It was built to carry tourists to picnic sites and hiking trails and, later, National Guardsmen to their training grounds. The four-mile-long railroad owned a total of four locomotives. The first was a 0-4-4 Forney that proved unsuitable. The other three, constructed for the line by Baldwin, were smaller replicas of the 4-4-0 standard-gauge engines that ran on the Cornwall & Lebanon. The Mt. Gretna Narrow Gauge was the only twofoot-gauge US railroad ever to run 4-4-0 locomotives. In 1986 I was approached by a man who lived in Pennsylvania and who had an interest in this railroad. He asked if there were any models of these obscure locomotives on the market. I assured him that there were not, so he asked if I could find someone to build some for him and coordinate and oversee the project. I wrote to Peter Fenn of Wye Valley Model Engineering in Hereford (UK), with whom I’d had some correspondence and had visited on one of my trips over, to see if he was interested in the project. Peter, I knew, was a superb engine builder. Fortunately, he was interested, and we were away. We decided on a scale of 16mm to the foot. Our client wanted the engines to be functional and to resemble the Mt. Gretna locomotives as closely as possible externally. He was not so concerned about the workings of the engine, so Peter and I decided that meths firing and slip-eccentric reversing would be the best way to go. I supplied Peter with what drawings and photos I could find of these locomotives, and he commenced. I received periodic progress reports from Peter, which I forwarded on to Pennsylvania. As the project neared completion, the problem of paint and colours came up. Here, our client was able to supply all the necessary information, as he was involved in the local historical society and had done a lot of research in this area. Colour samples and diagrams were forwarded to Peter. I supplied Peter with full-size artwork for the lettering and lining on the loco, and he had dry transfers made. Finally, in 1991, the locomotives were finished and shipped. A total of five were made – three for the man in
Cross tubes Flue Firebox
Figure 4: W righton boil er
The Mount Gretna Narrow Gauge was the only two-foot-gauge railroad in the US to use 4-4-0 locomotives. The colourful paint job seems correct and proper for a 19th-century tourist line.
Flue Riser Firebox
Pennsylvania, one for me, and the fifth was purchased by an anonymous buyer. We were all delighted.
Figure 5: As ter’s Baldw in 0-4-2T b oiler
communica ting with t he smokebo x. In the flu e were a nu mberof cross tubes set at an a ngle to inc rease surfa ce area an dimpede the draft a little. Thi s was a hig h-functioni ng boilerwith a lot of surface area and th e fire was e ntirely cont ainedwithin the water space. It was a little more difficul t to constru ctthan the Smithies and, shoul d one of th e cross tub es spring aleak, tough to repair. Aster used a variation of this boil er (figure5) in their Baldwin 04-2T. John van Riemsdijk ( JvR), a m ainstay of the Gauge 1Model Railway Association and a man scientificall y trained inthings steamy, has d eveloped a number of excellent b oilers forsmall engines. The Jv R type B b oiler(figure 6) feature s a
The model This model is finished to a very high standard indeed. The multi-colour paint job is flawless and as authentic as possible. All important details are there. The engine has an internally fired multi-flue boiler. On the backhead is a proper pull-out type throttle, along with a water glass with blowdown, pressure gauge, blower valve, and a bypass valve for the axle pump. There’s a dead-leg lubricator on the right side of the cab. Cab fittings are laid out with a precision I’ve not seen elsewhere. Slip eccentrics operate the valves. All axles on the locomotive (but none on the tender) are sprung. The springs are soft enough that they actually function in the way they were intended. The tender carries water in the rear and fuel forward. A hand pump can be accessed through the water hatch. A small valve just behind the coal bunker operates the chicken-feed fuel system. Alcohol is added via a port in one of the tool boxes.
plain boiler shell with an extern al firebox toward the rear.Several fire tubes within the boiler emerge at the rear f romthe bottom of the boile r into the firebox, and into t hesmokebox at the front. Th is is an ef ficient boi ler that isrelativelyeasy to co nstruct. The JvR typ e C boiler(f igure 7) ha s met with great succes samongst model engineers and at lea st one co mmercialbuilder. Aster has used it on seve ral of its en gines. Ther e areone or two variations to this boile r. The wa y it norma llyappears is as a simple boiler tube with flues that pass all theway through it, fro m front to r ear. A speci al external firebox,often made of stainles s steel, is attached to the boiler as a
The meths burner utilizes three flat wicks with septums between to help direct the flames. In the upper left is the lubricator, disguisedas anair tank.
Above: Four-bar crosshead guides are used on the model, as they were on the full-size locomotive. Spoked leading wheels were milled, not cast.
Right: Great attention has been paid to the layout of the cab. Note how precisely the pipework has been bent.
Fire tubes (as many as five) Firebox
Figure 6: Jv R Type B boi ler
Flues (usually two or three) External fire box
50 Figure 7: Jv R Type C boi ler
Top: Aster used a JvR type B on its small, freelance 0 -4-0TOld Faithful. Her e you can s ee where t he firetube s emergeinto the firebo x.
Above: The JvR type C boiler ha s an add-o n firebox t hatdirects the fire int o the firetu bes, which emerge fro m the backof the boiler. Thi s one, on a n Aster 0-6 -0T panni er tank, ismade of stainl ess steel an d extends b ack over th e rear axle.
FORMAT: 215 x 273mm, 208 pages, colour throughout, Hardback with dust jacket. ISBN: 978-1-902827-18-6
Right: The rear truck ofFireflyhas been rem oved and the as hpan drop ped. The grate i s in its working po sition.
Lower Righ t:With th egrate drop ped, the in terior of the fireb ox is visibl e. The dry-back d esign gives more fire-grate a rea. Flue h oles can just be seen on t he tube plate on th e right sid e.
Below:Hu gh Saunde rs built this coal-fi red Also 2 -6-2T Firefly. It has a prope r locomotive-type boiler wit h a dry-back fi rebox.
separateun it. This dir ects the fir e, which is under the b oiler,through the tubes and in to the smo kebox. Thi s may be t heeasiest-to-build internally fir ed boiler ar ound.All of the abovementioned boilers are most suitabl e foralcohol fuel, although gas burners hav e been adap ted to som eof them. For coal burning, th e locomot ive-type b oiler(fig-ure 8) is almost a mus t. As the na me suggests , this is an adap-tation of the boiler type used on ful l-size loco motives. Th ereis a firebox at the back with a grate in it for the co al. The fire -box can be surrounded by w ater on five sides (call ed a wet-back firebox), or just on the sides and the cr own sheet ( called
SpecificationsSpecifications Builder:Wye Valley Model Engineering – Peter Fenn (UK) Date built:1991 Gauge:0 (32mm) Scale:16mm Boiler:Internally fired, multi-flue Fittings:Safety valve, throttle, water glass, pressure gauge, blowdown, blower, bypass valve Fuel:Alcohol Blow-off pressure:60psi Cylinders:Two, double-acting D-Valve Reversing gear:Slip eccentrics Lubricator:Displacement Weight:13lbs (loco and tender) Dimensions:Length (loco and tender), 235⁄8in;width, 41⁄4in;height, 63⁄4in
Firebox (wet back v ariety)
Figure 8: Lo comotive-ty pe boiler(Sho wn with coal fire—work s equally as well with a lcohol)
a dry-back firebox), o r a combin ation there of. The wet -backfirebox is the most difficu lt to build, but is the most efficie nt.However, it cuts down on combustio n space wit hin, whichcould be critical to a small loco motive’s per formance. The dryback is easier to build, b ut loses som e heat via ra diation thro ughthe dry back. In our small-sc ale engines, though, th e differencein performance is minimal. In the back wall of the firebox isthe fire door, throug h which th e fire is fed .From the front wall of the fireb ox, a numb er of fire tu bes,or flues, communicate w ith the s mokebox. These mayinclude one or mor e larger sup erheater flu es, through whichthe superheater pipe(s) pass. As mention ed above, t his is the m ost difficult type of boil erto build. It also has the high est ratio of heating are a to water
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ATLANTIC EDITIONS LTD West Street, Bourne, Lincolnshire PE10 9PH Tel: (0)1778 392032 (UK & Overseas) – E-mail: firstname.lastname@example.org No.170 OCTOBER 2008
GARDEN Rail G ARDEN Rail
Incorporating GARDEN RAILWAY WORLD
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Garden Civil Engineering David Pratt
Technical Columnist John Lythgoe
Horticultural Columnist Becky Pinniger
Photography Phil Sixsmith
Buildings & Structures Kit Reviews Mark Thatcher
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5 EDITOR’S LETTER Tag Gorton
10 BUILDING ISLE OF MAN ROLLING STOCK David Booth
13 CRICKET,LOVELY CRICKET – A REVIEW John Rogers
17 OVERHAULING THE ARISTO-CRAFT C-16 2-8-0 John Lythgoe 13
44 TRADING PLACES
48 MAIL BOX - MARKET PLACE DIARY DATES
No.170 OCT 08 Front Cover: Voirrey Quirkand Hermione Prumblepose prettily for the camera on the twin bridges at Mooar Junction. Both locomotives are Roundhouse products and run superbly. Photo: Neil Hay
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21 NEW GARRETT AT BISHOPS AMBLE David Pinniger
22 MAKING A POINT David Rhodes
26 THE LEODEST & LARIVANE – A FISHY TALE Neil Hay
34 HEYWOOD STYLE 4W BRAKE VAN William High
37 WHAT A DIFFERENCE A DAY MAKES Mark Thatcher
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