Triple Expansion Model Engine on Steam 1 of 2
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- čas přidán 27. 10. 2019
- My Bolton 9 triple expansion model engine, which I must finish, because the build was started 4 years ago, is here running on the vertical boiler which I made earlier this year. The valve timing is slightly out causing some irregularity of motion. I am also getting used to a gimbal for my video camera. First of 2 videos. see johnsmachines.com for details of build, scrolling back to 2016-17.
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Very Impressive mate! I'd kill to have an engine like that
One viewer complained about the mess in the background. Well, that is after I had tidied up. You should have seen it before.
the sound of the engine is superb
Wow this is amazing great work!
What a wonderful engine I don’t think thay are self stArting am the next cylinder youses exust steam from the high pressure cylinder so if the high pressure cylinder is not moving there is no steam for the medium pressure cylinder to run off
that looks hot!
Yep. I have lost count of the number of times I have discovered that painful fact.
Hi John i have just finished a marine twin and I'm going to make a Stuart triple next. I am going to (try to) make the crank from solid and machine the intermediate eccentrics within the crank (is this a bad idea)?
Hi. I have made 4 solid crankshafts, of which 2 were useable. And they did not include solid eccentrics. Bear in mind that without including the solid eccentrics you will need 4 centres to machine the mains and big ends. If you machine the eccentrics with the crankshaft you will need 10 TEN! centres at each end (assuming a reversing engine), which I would think would be incredibly difficult in such a small model. So yes, I think that split eccentrics is more sensible. But absolutely make a solid crankshaft rather than a built up type. John.
@@johnv341 Thanks for the reply John..I will probably just try the IP pair
@@modelengineeringadventures I will be very interested in the outcome.
Brilliant gauge, I see it says Smiths on the face, are they still in business?
Don't know, the gauge was donated by a friend.
Fancy seeing AE here!
Smith's are still in business, they mostly make gauges for racing cars these days.
G’day John did you get castings from Boltons? Very nice model and boiler. Regards John
Hi John, castings were purchased from EJ Winter, Sydney. Ben deGabriel is very helpful.
Hello
I inherited a part build engine that looks like yours. I’d like to send you pictures of mine. Maybe you can help with some more information? Thank you in advance,
Michael
Hi Michael. Happy to help if I can.
HOW CAN IT BE TURNED INTO V FORMATION
I would not contemplate doing such a thing to this iconic engine.
@@johnv341 no like duplicate the triple expansion system to an v8 engine