superheaters

superheaters

This topic has 5 replies, 5 voices, and was last updated 30 January 2019 at 02:31 by Simon Collier.

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29 January 2019 at 17:27 #9501
Peter Russell 4
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@peterrussell4
General questions
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29 January 2019 at 17:27 #393590
Peter Russell 4
Participant
@peterrussell4
Hi can any one advise on which material to use for a super heater in a model locomotive.

I guess it should be stainless – but which one 304 316 etc

What wall thickness based on 3mm od

How to bend it.

Assuming it will be a single piece bent the joints will be in the smoke box so could they be high temp silver soldered.

Its going in a single flue tube gas fired boiler

Any other advice please
29 January 2019 at 17:54 #393593
Thor 🇳🇴
Participant
@thor
Hi Peter,

The subject has been discussed before, here are a few links:

***Link***

***Link***

***Link***

Thor
29 January 2019 at 19:35 #393615
duncan webster 1
Participant
@duncanwebster1
Do you really mean 3mm OD? That is going to be very small ID. As for material, use what you can get, I doubt you'll have much choice
29 January 2019 at 19:38 #393616
JasonB
Moderator
@jasonb
Could you get much larger into a G1 loco?
30 January 2019 at 02:31 #393642
Simon Collier
Participant
@simoncollier74340
This is a superheater for my G1 Eric made from a bit of 4 mm tube scrounged from a dead coffee machine. Stainless but no idea what grade, but good enough for the temperatures and pressures of an espresso machine. The inside radius is about 7/8". When I bend small tube I make a groove as wide as the diameter- a close fit- in a bit of bar with a parting tool, as deep as the diameter. I anneal the tube and bend. It can't flatten as it is constrained by the groove walls. Roundhouse use 1/8" stainless superheaters in their locos and kits.
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