When an article by Ray McMahon describing a turbo generator appeared in 2010 I thought it an interesting thing to make as I had no other projects on at the time. It all went quite well and I even managed to source the hand held torch for the generator. Having made it I thought ‘what am I going to do with it?’ Then Ray’s series on building the Class B Darjeeling Himalayan locomotive appeared in Model Engineer.
Four wheels, outside cylinders - it looked easy. I sent off for the drawings and was shocked when 170 A4 sheets arrived and I began to wonder what on earth I had let myself in for. After recovering a little I thought ‘you’ve bought the drawings, which cost quite a lot of money, might as well get on with it’.
I ordered the laser cut frames from Blackgates and made a start, slightly disappointed that the hole positions had not been spotted. Later, I ordered the cylinder castings and it appeared that most of the other castings listed were unobtainable at the time. Ray made his cylinders from solid lumps of cast iron. On the castings I had, the draft angle used contracted the front end of the cylinder to the extent that I had to reduce the diameter of the front cover and adjust the pitch circle diameter of the securing bolts. Giving up on castings, I made the wheels from cast iron blanks and from another piece of cast iron I bored and machined the brake shoes. I fabricated the two pumps from brass, together with the associated cross member.
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Denne historien er fra 4630-utgaven av Model Engineer.
Start din 7-dagers gratis prøveperiode på Magzter GOLD for å få tilgang til tusenvis av utvalgte premiumhistorier og 9000+ magasiner og aviser.
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WORKSHOP TIP - Boring Eccentrics
I am making a 1 inch Minnie traction engine and have arrived at the machining of the eccentric straps.
Wenford A 7¼ Inch Gauge 2-4-0 Beattie Well Tank
The stage has now been reached where the well tank body can be completed but beforehand there are some internal details to add.
Vertical Boiler Locomotives
Vertical Boiler Locomotives
Union Nuts, and How to Make Them
These are quite different from those commercially available and are made from copper
SHOWCASE Paul's Engine
One day my son Paul came to me and asked if we could make something in my workshop, so that he could learn engineering processes.
CLUB NEWS
My secret’s out!
Building Dancer - The Boiler
Dancer needed a boiler that would be somewhat larger than the size permitted under the Model Engineering exemptions in the New Zealand regulations.
An Inverted ‘Ross Yoke' Watercooled Stirling Engine
As with all my hot air engines they are cheap to build, mostly from scrap
A Draught Proposal
A Draught Proposal
A Boiler Feed Pump
A Boiler Feed Pump