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Cutting Torch Guide

Cutting Torch Guide 2

Cutting Torch Guide 3

Hi The spreadsheet is kind of a hodgepodge mess specific to where my mind was at the moment. I just haven't had time since the beginning of the year to play much. I'll post it if only to give you an idea of what not to do. John

Just A thought. I've built a steam donkey at 2x scale from the Harris book. 2 inch bore and 2 inch stroke. Running it on air with a 1/4 inch globe valve as you can buy from Coles, I found controlling the speed was a bit fiddly. You might want to consider a finer opening valve than the standard. John

Steamer. Thanks for that info. John

Hi, Me again. Finished the housecleaning and still working on the downsizing. Question for those who know better. I have an International 5HP hit and miss engine which belonged to my Uncles. I have fond memorys of hearing it running the well pump jack. Years ago when I restored it I measured it...

Hi , Been doing some more housecleaning and downsizing and came across Plans for a Cutting Torch Guide I had drawn in 1986. The paper drawing was pretty dry and crisp. Since my Boiler project is temporarily on hold, I redrew the Torch Guide in CAD. I'm pretty sure the design is origional but if...

Sorry. This should be clearer. All other joints are similar but may be bevelled and welded from both sides depending on access. John Found My Australian code book so far at least. The recomendation in it is for a maximum dimension of 1.5 mm, so that's what I'm going to draw. Also talked to a...

Things got busy between farm work and Med Appoints since the new year so I.ve finally got back to my drawings. I talked to a Boiler Inspector ( not the one I want Yet ) and He gave some general info which I was already aware of, but talk is good. I currently doing some drawings for weld preps...

Dan and Brian, You've probably already found this but if not. I haven't compared it to ASME requirements. John http://www.xlerplate.com.au/files/dmfile/XlerplateProductInfoBook-Oct10.pdf Hope I got that right.

If it was me I would want a larger steam space, but this isn't a deal-breaker depending upon demand. GWR, I think you'll appreciate this. I was out in the shop today and out of curiousity I tacked together some pipe which gave me the approximate spacing of the upper drum to boiler shell which...

Dan I stand corrected. I see that the Australian materials such as AS 1548 don't unless it's been changed meet the ASME code requirements. Interesting. A person definately has to check the local codes where you live. John

Dan, Your quite correct on the materials. In Alberta Can. where I am if you want your boiler passed, it has to be built from ASME code materials with full documentation on each piece. While the AMBSC code book makes allowances that pertain to our smaller models, it only allows materials like the...

GWR Thanks for the link. The site is a lot simpler and clearer than the one I was using. The steam space does concern me. I think I'll lower the upper tube plate and see how it looks. I don't think it will effect the heating surface that much. I had though of maybe adding a - call it a...

Hello again, The present configuration of my boiler uses 20 .625 o.d. tubes. This would give me a heating surface of about 500 Sq.In. I think this is more than adequate for the demand. I do have 5 tube patterns ranging from 14 - .625 tubes up to 31 - .500 tubes in Excell so It's easy to fiddle...

Thanks Dan, Interesting information. I'll work it back to my size and see how it looks. John

GWR, The main reason I use o-rings is that i use them frequently on the farm and are readily available. In three steam engines the previous 2 being smaller bores, they,ve worked well. it's very true that the initial cylinder wall finish is important and one has to remember that 0-rings swell a...

Dan, The twin engine bore is 2" and the stroke is 2". The pston rod is 3/8" in diameter. I know there is controversy about it, but I used a Viton o-ring for a piston rings. I've always had good luck with o-rings. The cylinder blocks are cast iron and the slide valves are bronze. John

Thanks Dan. I do appreciate your input. It makes me think which is a good thing. John