[modeleng] Re: new post

Julian, I know that all this sounds Negative, and it
is, but we just don't want you to possibly kill
yourself and injure some innocent by-stander. 
Concentrate your scrounging skills on finding a
seamless Copper tube the right size and some Copper
sheet, then you'll be on yer way.

Al Messer

--- Clif Walker <clif.gwr@xxxxxxxxxxxxxx> wrote:

> Hi Julian,
> 
> With the current regulations if you wanted to build
> one from Aluminium you 
> would first have to provide full structural
> calculations for the design to 
> prove that it would work.
> Then all you have to do is look at the problems over
> the years when firms 
> have made domestic heating boilers from
> Aluminium.They usually failed very 
> quickly and they were only working at a very low
> pressure.
> Whilst the idea would seem to be very attractive I
> dont think that Aluminium 
> has a very high tensile strength when hot so a
> firebox would be a problem 
> especially is you accidently let the water get low,
> when I think the crown 
> would instantly melt.
>  I do not think that you would get a Boiler
> Inspector to stay anywhere near 
> one with a fire in it and pressure building up.
> Stick with tried and tested designs.
> Regards
> 
> Clif
> 
> 
> ----- Original Message ----- 
> From: "JULIAN HARRISON"
> <julianharrison7@xxxxxxxxxxxxxx>
> To: <modeleng@xxxxxxxxxxxxx>
> Sent: Tuesday, October 24, 2006 2:55 PM
> Subject: [modeleng] new post
> 
> 
> > Hi,
> >
> >  I am new to model engineering and have a question
> re boilers. Is there 
> > any problem building a working steam boiler for a
> 2" or 3" scale traction 
> > engine completely from Aluminium. I have a good
> supply of all sizes for 
> > very little money. I am hoping to build the
> complete model almost entirely 
> > from ali and not paint it. Not using prototype
> just building from scratch. 
> > I can solder and weld ali so the joints are not a
> problem. Ali can 
> > withstand high pressures so is there any problen
> doing it and getting a 
> > boiler test certificate? All help and comments
> gratefully received
> >
> >  Julian Harrison.
> >
> >
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