Class 4 Boiler construction

[Stuart]

Here are the photos that were taken during the construction

[Stuart]

[Stuart]

[Stuart]

Super heater stack


these are made from 1 length of 5/32 stainless tube ( hypodermic tube ) and folded up like a trombone each tube is approx 5 foot long

the top row are over the fire and the lower row just peep out of the fire tube





the head block took some working out to get the passages in the right place it looks wrong but is in-fact correct

[sbwhart]

Blimey Stuart that supperheater looks right complicated, how did you do the trombone bends?, I read someware that you have to heat the tube white hot to get a clean bend is that correct.

Cracking bit of boilermaking.

Stew

[Stuart]

no stew

it bend very easy just turn up a 5/8 dia bar with a 5/32 grove clamp and pull round with your hand its quite soft   all bent up cold

with collars' ss on and clamped into the header with ptfe rings


as I said the header took some drilling and plugging to get it to function and look as the 12 to the foot one  , its a lot of angled holes



for scale the boiler is about 20 inches long and heavy

Stuart

[sbwhart]

Thanks for the info Stuart

Stew

[Bearcar1]

WOW! Stuart, what a truly magnificent piece of work. You must be getting pretty good at silver soldering by mow..  I'm looking forward to seeing the rest of your project.

BC1
Jim

[Dan Rowe]

Stuart,
Wow indeed that superheater looks like the real deal. Very impressive work.

Dan

[Stuart]

Thanks guys
as I have said before i build my loco's to true scale if the 12 to the foot has it the 1  1/16 to the has it

the loco if belongs to is about 4 foot long and is now to heavy to lift without the shop crane ( fixed on track above assembly bench )

I will take some more pics I do not detail my build the camera is to expensive to get near the machines like ?2k for the body and ?1K for the lens but i will take some of the static progress


I will get some pics of a vertical boiler I have done fully tarted up with  up mahogany lagging


Stuart