what is the british standard of boiler thickness to obtain a
certificate on 2.5 gauge is it 2mm thick or code l 3mmthick tube just
checking before i buy some copper
charles australia
Charles,
Unless there is a specific reason why you need to comply with UK regulations I'd
think you'd want to consult the AMBSC-Copper for that information, the
Australian miniature copper boiler code.
Harry Wade
Nashville USA
-----Original Message-----
>From: charles <mortimer@...>
>what is the british standard of boiler thickness to obtain a certificate on 2.5
gauge is it 2mm thick or code l 3mmthick tube just checking before i buy some
copper
>charles
hallo harry
thanks for your time and thoughtful help appreciated
yes there is a reason i am returning back to UK in a year or so,, and rather
build to U.K. specifications,, and by the time i get there these engines wont be
quite finished ,,each and every country have there peculiar specifications and i
rather build to the country that i am returning to been an expat to long now
thanks harry
Charles in oz
----- Original Message -----
From: Harry Wade
To: halfinchlivesteamforum@...
Sent: Sunday, May 11, 2008 11:33 PM
Subject: Re: [Half inch live steam forum] question on boiler material
Charles,
Unless there is a specific reason why you need to comply with UK regulations
I'd think you'd want to consult the AMBSC-Copper for that information, the
Australian miniature copper boiler code.
Harry Wade
Nashville USA
-----Original Message-----
>From: charles <mortimer@...>
>what is the british standard of boiler thickness to obtain a certificate on
2.5 gauge is it 2mm thick or code l 3mmthick tube just checking before i buy
some copper
>charles
[Non-text portions of this message have been removed]
For a small boiler you can get away with 16swg for the throat plate,
firebox tubeplate and firebox door plate. Makes flanging the plates
much easier as well. I've read that the only reason for using 13swg
for the backhead was that LBSC used to thread his fittings straight
into the copper without using bushes and the thicker metal gives more
thread. I would not recommend that practice nowadays though!
John
--- In halfinchlivesteamforum@..., "charles"
<mortimer@...> wrote:
>
> what is the british standard of boiler thickness to obtain a
> certificate on 2.5 gauge is it 2mm thick or code l 3mmthick tube just
> checking before i buy some copper
> charles australia
>
hallo john
Charles here
now that's music to my ears , at least it gives me an idea .. i just have the
chance of picking up some 2mm copper enough for the bullied rebuilt ,,,you are
Wright about lbsc that's what he recommended a bit doggy these days ,,threading
copper is ok,, overtighten the union and you loose the thread ,,nice meaty
bushes is the order of the day ,,,,progress is slow this end just about
finished the pony truck steel prefabricated job the whole lot was tacked
together with the mig all in 1/8 steel i will send a picture through to you
when it looks half decent thanks for the information john ,,,,,at least i am
on the Right track,,,,,,,,,Charles
----- Original Message -----
From: John Baguley
To: halfinchlivesteamforum@...
Sent: Monday, May 12, 2008 4:54 PM
Subject: [Half inch live steam forum] Re: question on boiler material
Hi Charles,
I am not sure if there is actually a spec laid down over here for
metal thickness versus boiler size. However, the 'standard' seems to be :
For a small boiler you can get away with 16swg for the throat plate,
firebox tubeplate and firebox door plate. Makes flanging the plates
much easier as well. I've read that the only reason for using 13swg
for the backhead was that LBSC used to thread his fittings straight
into the copper without using bushes and the thicker metal gives more
thread. I would not recommend that practice nowadays though!
John
--- In halfinchlivesteamforum@..., "charles"
<mortimer@...> wrote:
>
> what is the british standard of boiler thickness to obtain a
> certificate on 2.5 gauge is it 2mm thick or code l 3mmthick tube just
> checking before i buy some copper
> charles australia
>
[Non-text portions of this message have been removed]
I'd always thought the reason for thicker plates was the unsupported areas
you tend to get with the back, throat & smokebox tubeplates. A backplate can
have big (ish) areas where there are no stays, the throatplate needs to be
thick if using the Curly method of a butted join (I use a full flanged
throatplate and think I'd be ok with 16swg but still use 13!). I'm sure what
I've built in this sort of model size (Tich, Invicta & Scotsman) all use
16swg for all inner firebox plates? Not got a model or their drawings to
hand though! For my tubes, I use 10mm microbore household plumbers pipe, not
sure of its swg? A 10m roll is very cheap (for copper!).
----- Original Message -----
From: "John Baguley" <baggo@...>
To: <halfinchlivesteamforum@...>
Sent: Monday, May 12, 2008 8:54 AM
Subject: [Half inch live steam forum] Re: question on boiler material
> Hi Charles,
>
> I am not sure if there is actually a spec laid down over here for
> metal thickness versus boiler size. However, the 'standard' seems to be :
>
> barrel, wrappers, and crown stays - 16swg (1.6mm)
> Smokebox tubeplate, throat plate, backhead, firebox plates - 13swg (2.5mm)
> Tubes - 18swg or 20swg (0.9/1.2mm)
>
> For a small boiler you can get away with 16swg for the throat plate,
> firebox tubeplate and firebox door plate. Makes flanging the plates
> much easier as well. I've read that the only reason for using 13swg
> for the backhead was that LBSC used to thread his fittings straight
> into the copper without using bushes and the thicker metal gives more
> thread. I would not recommend that practice nowadays though!
>
> John
hallo Simon
yes theirs that to ,,which has to be taken in consideration , its always best to
err on the thicker size ,,,by getting other peoples thoughts every-one will have
a good idea of what is acceptable... i myself want to be in the British guide
lines ....i will be using 2mm and three mil thickness,,, over engineered maybe
at least ..i can prove to the boiler inspector it will be on the right side also
it will give me more weight (tractiv effort) some lighter engines suffer
problems like ,,,that even the frames will be1/8 steel ,,, in other words built
like a brick dunny,,,i know the tubing that you are referring to its plentiful
here and can be bought by the meter thanks Simon i am getting a good picture
built here of what's acceptable
Charles in oz
----- Original Message -----
From: Simon Wass
To: halfinchlivesteamforum@...
Sent: Wednesday, May 14, 2008 7:57 AM
Subject: Re: [Half inch live steam forum] Re: question on boiler material
I'd always thought the reason for thicker plates was the unsupported areas
you tend to get with the back, throat & smokebox tubeplates. A backplate can
have big (ish) areas where there are no stays, the throatplate needs to be
thick if using the Curly method of a butted join (I use a full flanged
throatplate and think I'd be ok with 16swg but still use 13!). I'm sure what
I've built in this sort of model size (Tich, Invicta & Scotsman) all use
16swg for all inner firebox plates? Not got a model or their drawings to
hand though! For my tubes, I use 10mm microbore household plumbers pipe, not
sure of its swg? A 10m roll is very cheap (for copper!).
----- Original Message -----
From: "John Baguley" <baggo@...>
To: <halfinchlivesteamforum@...>
Sent: Monday, May 12, 2008 8:54 AM
Subject: [Half inch live steam forum] Re: question on boiler material
> Hi Charles,
>
> I am not sure if there is actually a spec laid down over here for
> metal thickness versus boiler size. However, the 'standard' seems to be :
>
> barrel, wrappers, and crown stays - 16swg (1.6mm)
> Smokebox tubeplate, throat plate, backhead, firebox plates - 13swg (2.5mm)
> Tubes - 18swg or 20swg (0.9/1.2mm)
>
> For a small boiler you can get away with 16swg for the throat plate,
> firebox tubeplate and firebox door plate. Makes flanging the plates
> much easier as well. I've read that the only reason for using 13swg
> for the backhead was that LBSC used to thread his fittings straight
> into the copper without using bushes and the thicker metal gives more
> thread. I would not recommend that practice nowadays though!
>
> John
[Non-text portions of this message have been removed]
It might also be a good idea, to keep a photographic record of the
boilers construction as this is also important, and to cover all, try
and get certificates for the material, or at least the grade number.
It may seem over the top, but better safe than sorry after all that
hard work.
Ian
--- In halfinchlivesteamforum@..., "Charles Mortimer"
<mortimer@...> wrote:
>
> hallo Simon
> yes theirs that to ,,which has to be taken in consideration , its
always best to err on the thicker size ,,,by getting other peoples
thoughts every-one will have a good idea of what is acceptable... i
myself want to be in the British guide lines ....i will be using 2mm
and three mil thickness,,, over engineered maybe at least ..i can
prove to the boiler inspector it will be on the right side also it
will give me more weight (tractiv effort) some lighter engines suffer
problems like ,,,that even the frames will be1/8 steel ,,, in other
words built like a brick dunny,,,i know the tubing that you are
referring to its plentiful here and can be bought by the meter
thanks Simon i am getting a good picture built here of what's
acceptable
> Charles in oz
>
> ----- Original Message -----
> From: Simon Wass
> To: halfinchlivesteamforum@...
> Sent: Wednesday, May 14, 2008 7:57 AM
> Subject: Re: [Half inch live steam forum] Re: question on boiler
material
>
>
> I'd always thought the reason for thicker plates was the
unsupported areas
> you tend to get with the back, throat & smokebox tubeplates. A
backplate can
> have big (ish) areas where there are no stays, the throatplate
needs to be
> thick if using the Curly method of a butted join (I use a full
flanged
> throatplate and think I'd be ok with 16swg but still use 13!).
I'm sure what
> I've built in this sort of model size (Tich, Invicta & Scotsman)
all use
> 16swg for all inner firebox plates? Not got a model or their
drawings to
> hand though! For my tubes, I use 10mm microbore household
plumbers pipe, not
> sure of its swg? A 10m roll is very cheap (for copper!).
>
> ----- Original Message -----
> From: "John Baguley" <baggo@...>
> To: <halfinchlivesteamforum@...>
> Sent: Monday, May 12, 2008 8:54 AM
> Subject: [Half inch live steam forum] Re: question on boiler
material
>
> > Hi Charles,
> >
> > I am not sure if there is actually a spec laid down over here
for
> > metal thickness versus boiler size. However, the 'standard'
seems to be :
> >
> > barrel, wrappers, and crown stays - 16swg (1.6mm)
> > Smokebox tubeplate, throat plate, backhead, firebox plates -
13swg (2.5mm)
> > Tubes - 18swg or 20swg (0.9/1.2mm)
> >
> > For a small boiler you can get away with 16swg for the throat
plate,
> > firebox tubeplate and firebox door plate. Makes flanging the
plates
> > much easier as well. I've read that the only reason for using
13swg
> > for the backhead was that LBSC used to thread his fittings
straight
> > into the copper without using bushes and the thicker metal
gives more
> > thread. I would not recommend that practice nowadays though!
> >
> > John
>
>
>
>
>
> [Non-text portions of this message have been removed]
>
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