[Steam-engine] Fw: Rivited boilers

Tue Feb 14 07:18:06 PST 2006

Lawrence,

    I ran across this email the other day and it prompted me to email you. 
Do you have all of the patterns required to build a half scale 25 hp simple? 
Would you be willing to loan (at a reasonable cost) them out to have some 
castings made?  I've been kicking around the idea of building a half scale 
engine after my Advance is done.

Dan Donaldson


----- Original Message ----- 
From: "Lawrence Swanz" <LSwanz at superioriron.com>
To: "Steam-engine mailing list" <steam-engine at lists.stationary-engine.com>
Sent: Wednesday, March 30, 2005 12:56 PM
Subject: RE: [Steam-engine] Fw: Rivited boilers


> Dan,
>
> I myself worked for a company located in Minneapolis, Deltak Corp.  During 
> which time I designed and built two half scale boilers.  One for a friend 
> of mine who built a beautiful half scale 110 Case, and the other for a 
> "freelance" 25-75 GaarScott engine, which I am still working on.  Deltak 
> did the certified welding for me, since I am not a welder, nor do I carry 
> the certifications.  However, I did do a lot of the prep work myself, or 
> with the aid of friends.  Both boilers were designed to operate at 225 
> PSI.  I very well may run that pressure on mine, but David kept his at the 
> traditional 150 lbs.  The reason I will probably use the boilers full 
> capacity, is I plan to build a "heavy half" scale 14 bottom gang plow.  A 
> person can still purchase new 10" mowboards, which would make the plow 
> bigger than half scale, but my engine is pretty good size, so I shouldn't 
> have a real problem pulling it, or at least I hope not.  Could be a little 
> embarrassing for me if the engine falls!
>  flat on her face though!!!
>
> Originally I had modified some wood patterns my grandfather used to make 
> his half scale 25 hsp simple single GaarScott to make a double engine, the 
> castings which I currently have.  But then I ran across a Soule engine and 
> decided to make some modifications to it and use it as the power plant 
> instead.  The Soule's are a pretty well built engine and can withstand 
> high pressures.  I have already made the crankshaft extensions and have 
> the engine temporarily sitting upon the boiler.  I have a lot of work to 
> do to it before it becomes a permanent fixture though.
>
> Well this is probably a little more information than you wanted or cared 
> to hear.  So I will close for now.  If you want, you may email me off list 
> and we can chat some more.
>
> Lawrence J. Swanz
> lswanz at superioriron.com
>
> -----Original Message-----
> From: steam-engine-bounces at lists.stationary-engine.com
> [mailto:steam-engine-bounces at lists.stationary-engine.com]On Behalf Of
> Dan Donaldson
> Sent: Wednesday, March 30, 2005 10:47 AM
> To: Steam-engine mailing list
> Subject: Re: [Steam-engine] Fw: Rivited boilers
>
>
> Lawrence,
>
>    To answer your first question I work for Florida Structural Steel /
> Tampa Tank Inc..  We are a steel fabricator that builds steel bridges,
> buildings, duct work for power generation plants, large fuel and oil 
> storage
> tanks in South America, lime silos, turpentine recovery systems, gravity
> water filter tanks and pressure vessels for various purposes including
> hyperberic chambers.  Hyperberic chambers are pressure vessels that people
> get inside of and pressure is applied.  The medical industry uses them as
> well as divers when they get the bends.
>    To answer your second question my intension is to build a new complete
> boiler under the ASME code with an "S" stamp.  Rebuilding my current 
> boiler
> using the original steam dome is an option that deserves consideration.
>
> Thanks for asking and the input.
> Dan
>
>
>
> ----- Original Message ----- 
> From: "Lawrence Swanz" <LSwanz at superioriron.com>
> To: "Steam-engine mailing list" <steam-engine at lists.stationary-engine.com>
> Sent: Wednesday, March 30, 2005 10:10 AM
> Subject: RE: [Steam-engine] Fw: Rivited boilers
>
>
>> Dan,
>>
>> My first question for you is, what business do you work at that carries 
>> an
>> A.S.M.E. certification, if you don't mind me asking.  Secondly, if you 
>> are
>> planning to go through all the hassle of building an A.S.M.E. boiler, why
>> would you want to do it under an 'R' Stamp by incorporating the existing
>> steam dome.  Because when you are all done, you will still have a 
>> non-code
>> boiler at the end of the day.  I would suggest going for the gusto and
>> build a new boiler with the new boiler rules incorporated, which allows
>> for a stayed surface area of roughly 3.5 safety factor versus the 4.0 
>> that
>> we currently use in our formula.  I have spoken with our chief boiler
>> inspector on this very topic in passing.  He hasn't really given his 
>> input
>> on the topic yet, but with more and more owners looking at having new
>> boilers built to the new code requirements, it is a subject that will and
>> should be addressed.
>>
>> -----Original Message-----
>> From: steam-engine-bounces at lists.stationary-engine.com
>> [mailto:steam-engine-bounces at lists.stationary-engine.com]On Behalf Of
>> Dan Donaldson
>> Sent: Wednesday, March 30, 2005 8:18 AM
>> To: Steam-engine mailing list
>> Subject: [Steam-engine] Fw: Rivited boilers
>>
>>
>>    Someone on the list emailed me privately with a couple of questions. 
>> I
>> figured I would forward those questions and my response to the list.  Any
>> input regarding this subject would be greatly appreciated.
>>
>> Dan Donaldson
>>
>> Questions:
>>
>> One can basically build an new boiler around an old rivet and falls under
>> Repair.  You may be able to save quite a bit by using your old dome (of
>> course having the proper tests done to insure that its ok; I myself have
>> never heard of a bad dome), and having a new boiler built underneath.
>> BTW , not wanting to be nosey, but what engine are you redoing, and what
>> is it costing you?
>>
>> Answer:
>>
>>    I am working on a 1910, 26 hp Advance tandem compound with their
>> patented straw burner boiler.  I have not estimated the cost yet but I am
>> trying to keep cost down by doing a lot of the work myself like detail
>> drawings, steel fit up and drilling of the stay bolt and rivet holes. 
>> The
>> company I work for is ASME certified for pressure vessel fabrication and
>> repair ("U" and "R" stamps) so I will be able to get the steel at cost 
>> and
>> cutting and forming the material at a low cost.  The only welded parts I
>> plan to have are the longitudinal seam on the barrel and the firebox.
>> Those welds will be done by ASME certified welders and X-rayed.  I plan 
>> to
>> have a certified "S" shop do the riveting and stay bolt installation.  No
>> work will be done until drawings are done and the boiler shop I plan to
>> use has a chance to look at them and total cost estimate made.
>>    I have also considered re-using the steam dome to allow for a repair
>> shop to the work.  And I may go that route but I would like to keep the
>> engine running until the boiler is completed and ready for mounting all 
>> of
>> the castings.
>>
>> Dan Donaldson
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