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Re: Today's home page picture

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  • Frank McNeill
    Hi Pete, ... Go to http://tinyurl.com/25yv72 and scroll down for an image for a kit for a lifeboat to see the bread and butter thing. ... I don t know if there
    Message 1 of 9 , Feb 2, 2007
      Hi Pete,
      --- In pop-pop-steamboats@yahoogroups.com, "Pete B." <georgeyyy@...> wrote:
      > Hi Frank,
      > On break & Checked out the messages...
      > I have two questions based your home pixs:
      > * Where did the "bread & Butter" boat kit picture originate?

      Go to http://tinyurl.com/25yv72 and scroll down for an image for a kit for a lifeboat to see the bread and butter thing.

      > * Do you know if there ar tube boilers commecially available? I've
      > seen the diaphgm type but not the tube type.

      I don't know if there are any tube boilers or not. Most people probably  buy  tubing and wrap it around a broom stick or something to make their own.
      > I also like the K. G. Wells (Model Engineer 14 AUG 63) "jet boat" that
      > you uploaded to our FILES section. I'm going to look at redrawing the
      > pattern in CAD and then post in FILES. More later....
      > Pete
      > --- In pop-pop-steamboats@yahoogroups.com, "Frank McNeill"
      > frankmcneilll@ wrote:
      > >
      > > Hi All,
      > >
      > > Today's newest of numerous new home page pictures shows a clip from an
      > > article by Len Stevens from the April 1996 issue of Model Boats
      > magazine
      > > that Richard Jenkins posted to files. This was the article that
      > inspired his
      > > construction of our poster child "Popflea" which can be seen in our
      > photos
      > > section and his observation about the superior performance of boilers
      > made
      > > of square brass tubing over round tube and diaphragm type boilers.
      > > Our principal source of "inspiration" for designing pop-pop boats that
      > look
      > > like real steamboats will probably be card stock models that will
      > require
      > > boilers with shrouds and smokestacks and tubes that extend down
      > through the
      > > bottoms of hulls rather than back through their sterns. There was a
      > > discussion thread in January about a hotter burning fuel in which
      > Vance Bass
      > > wrote that:
      > > "My experience indicates that you don't necessarily want a hotter
      > fuel. The
      > > problem is that a really hot fire makes it harder to get the cold zone
      > > necessary for the condensation part of the pulse cycle. I built a boat
      > with
      > > a very hot alcohol burner and the thing would not run after a short
      > period.
      > > When I changed the burner to something less aggressive, it ran fine.
      > So I
      > > think that if you are going to have a really hot burner, you must also
      > take
      > > pains to have a really effective cool zone. This could be a sump pump
      > > evaporator (or) running the tubes into the water and along the
      > underside of
      > > the boat rather than out the rear transom. regards, -vance-"
      > > If you look at the current home page picture, you will understand how
      > this
      > > could be done by rotating either of the versions so the propulsion
      > tubes
      > > would go down, rather than back, and have a 90-degree bend to expel
      > water
      > > horizontally under the hull.
      > > This would also rotate the horseshoe loop to a position over a candle
      > or
      > > burner inside a shroud that would direct waste heat up through a
      > smokestack
      > > that any respectable steamboat model would possess.
      > >
      > > ttfn, old Frank
      > >
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