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I would like to see you continue with this build, and to post a build log. Go for it!!

The Australian code mentioned above for miniature boilers made of Duplex Steel is not stainless steel as such. It is a special alloy (2205 rings a bell; its a while since I was involved; Sandvik produce it) which avoids the major issues with "ordinary" stainless steels, primarily "chloride...

I'm guessing the lack of replies means no-one knows of the availability of drawings. Several models have obviously been completed over the years; what do builders do with drawings when they finish a model? Can drawings be onsold after use without offending copyright? I am still keen to obtain...

I realise the castings are likely unavailable, but does anyone know if drawings are still available anywhere?

I seriously doubt that this premise would work in practice. While mechanically the LP piston would move up and down, in appropriate time with the HP piston, it would have to do so at (roughly!) three times the speed (ok, it's not that simple, but I'm trying to illustrate a principle). The...

Hey People, thanks for all the replies! I really appreciate the input, and I rather think I will go for a segmented belt! If it doesn't work out, for me, i can always go thhe whole hog and do a spindle out belt change. I was just hoping that the segmented belt might have been worth the extra...

Hi Group, my lathe recently shat itself, and presented me with a ragged, split, shabbilly broken piece of material which used to be a vee belt. I have changed the belt in the past (involving complete removal of the spindle), several years ago, and I remember the job taking much longer than I...

Hey Deefer, Are you able to comment on the governor. I bought one based on your recommendation, and its amazing, and it seems like it should work, but I'm curious to hear of your thoughts now that its running on your engine. Ian K. Wollongong NSW Oz.

Yes please, I'd like to see more progress on this. It looks like an ideal display load for miniature engines. Great work. Ian K.

This is a very extensive list, but I am a little surprised that no mention was made of the products available at www.punchcad.com There is a range of products, variously priced, to suit a range of outputs. I have used ViaCAD 2D3D for several years, and found it reasonably quick to learn, and...

Hi Gary, and Pat, I tried Viacad2D/3D a few years back, and I love it. It's only $100, has a short learning curve, is very intuitive to use, and has lots of features. There are a few little landmines here and there, but overall I'm very impressed with it. It really is quite different...

Hi Bob, I've been using ViaCAD 2D/3D for several years now, and really like it. For around $100 (often on special for $70) I think it's great value for a full 3D modeller. No, it doesn't have all the bells and whistles of SolidWorks and others, but they cost an arm and leg! There is a...

Hi Ralph, The ViaCAD 2D3D package I mentioned above in reply #7 runs very well on Macs Regards, Ian.

Hi, I have greatly enjoyed using ViaCad 2D3D (and have since upgraded to SharkFX), which is available from www.punchcad.com for around $US99. The learning curve is short by comparison with other packages, and the output is fabulous! Usual disclaimer. Regards, Ian.

Hi George, I may well be wrong, but your description of the drilled hole sounds to me like the drill bit "filled" with aluminum in the flutes, and the back portion of the hole was not cleanly drilled, but "bulldozed" out. I have always, when drilling aluminum, used several sizes of drill to...

Hi all, I am watching a tv program about rebuilding Abrams tanks, and they are re-assembled in a factory in Lima Ohio. The program narrator is pronouncing it as "Lie-ma" and I always thought it was "Leema". Can you locals please offer your preferred pronunciation, just for my education...

Hi Jim, I went to http://www.hobbylobby.com, but could not find any way to get further to the bearing sale you mentioned. Is there any chance you might post the actual url, please? Regards, Ian. Wollongong NSW Australia

Hi George, I certainly don't wish to pour water on your plans, but I think you should know that the idea of using compressed air instead of steam may leave you a little short. Compared to steam, it has no thermal energy, which is where steam gets most of its useful energy from. I seriously...

Hi Arnold, Yes, you are correct in that the soldering will soften the tubes, but you should select hard-drawn tubes to ensure you are inserting straight and round tubes. You might be surprised how many people ask "Why can't I just straighten out some coiled tube?" which is easily obtainable...

Hi Arnold, Your maths is mostly ok, with the exception of the following; In (b), the divisor should be D - T + 0.005D. While it has been mentioned that the same expression may be used for external pressure as well as internal pressure, and I agree with this, no-one has mentioned one...