Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

Builds, Repairs, Show Your Machines! => Technical Tips, Builds, and Help => Topic started by: Tony Bird on May 03, 2021, 11:59:53 am

Title: Re: A boiler for Ellie.
Post by: Dampfopa on May 21, 2021, 07:12:43 am

Congratulations Tony, a very neat job. There are not so many people who can do this.

Title: Re: A boiler for Ellie.
Post by: Belugawhaleman on May 21, 2021, 04:10:17 am

Great work on that boiler, Tony!

Title: Re: A boiler for Ellie.
Post by: classixs on May 04, 2021, 04:18:10 am

Beautiful work Tony!

I know it won´t be visible under normal circumstances, but just knowing that it looks like that under there, and not just some "nails" poking out through the boiler, makes the entire vessel a much nicer and more finished looking product in my opinion.

Title: Re: A boiler for Ellie.
Post by: Tony Bird on May 04, 2021, 03:36:00 am

Hi Jan,

A burner view of the staples

[attachimg=1]

Take care.

Tony.

Title: Re: A boiler for Ellie.
Post by: classixs on May 04, 2021, 03:19:34 am

Thanks for clarifying Tony.

I assumed this was the case, and eventhough i´ve never tried it myself either, i have to agree completely with your theory, regarding tiny tubes under there.
I really like the look of the "staples" over the usual "hedgehog quills". Looks way more organized under there...which suits my OCD perfectly ;D

Title: Re: A boiler for Ellie.
Post by: Tony Bird on May 04, 2021, 01:57:09 am

Hi Jan,

Is the heat exchangers underneath solid copper rod, like one would use on a porcupine type, or hollow tubes?

Solid 2 mm rods bent into a staple shape.  I had built several boilers using hedgehog/porcupine rods but it was sometimes a bit difficult to stop them moving during soldering, it is quite difficult to turn a should on small diameter copper rods so I came up with the idea of using a staple shape which are sort of sprung into their holes and pushed down onto a spacer which keeps them all the same height; this spacer being removed before soldering.  I don't think that small hollow tubes would have any advantage over solid rods as I think they would soon clog and if the boiler ran dry burner out.  This is only an opinion I haven't tried using tubes except in larger sizes.

Take care.

Tony

Title: Re: A boiler for Ellie.
Post by: St Paul Steam on May 03, 2021, 09:24:03 pm

A smart looking boiler Tony , well done that.

Title: Re: A boiler for Ellie.
Post by: Jim on May 03, 2021, 07:09:45 pm

Impressive work as always Tony!

Title: Re: A boiler for Ellie.
Post by: Stoker on May 03, 2021, 12:26:57 pm

Wow Tony ... that looks far better than most commercial jobs. Looks quite stout and with all those heat exchangers underneath, it ought to make steam enough to really give that little engine all it needs and more!

Title: Re: A boiler for Ellie.
Post by: classixs on May 03, 2021, 12:20:10 pm

That little boiler looks amazing Tony, well done!

Is the heatexchangers underneath solid copperrod, like one would use on a porcupine type, or hollow tubes?

Title: A boiler for Ellie.
Post by: Tony Bird on May 03, 2021, 11:59:53 am

Hi,

The wether here is South Wales has been horrible today so I had to spend the day in the workshop! I finished and tested a boiler for Ellie the steam tram.
[attachimg=1]
[attachimg=2]
[attachimg=3]
[attachimg=4]

Take care Tony.