Superheaters, theory and manufacture…

[@giovannyrestrepogomez2732]

Excelente explicación bendiciones

[@RustyInventions-wz6ir]

Simply beautiful

[@prsearls]

The new superheater should reduce fuel and water consumption since the steam's energy to the cylinders has increased. But without careful records, it's more theoretical. It's still a great improvement and project. My congratulations to you on how you engineered and built it. Your engine is a fine running locomotive.

[@TomsWorkshop42]

Many thanks. It was a nice little project, haven’t created much recently as I’ve been doing a lot of repairs, so was nice to have a quick one like that.

[@MikeL0ck]

Good to see the workshop again 😊

[@martyncozens5654]

Thanks Tom very interesting I liked the way you made up the wet and dry headers nice and compact.

[@TomsWorkshop42]

Thanks, they do save space in the smokebox.

[@julias-shed]

Nice 😀 good timing as I need to decide what to do on my Britannia

[@ChristiesSteamWorkshop]

Great Video Tom as usual love staying tuned to your videos always learn alot from your video

[@TomsWorkshop42]

Thanks.

[@andrewfayers9147]

Thank you for this most informative chat. I've never been sure, but semi-radiant elements, I assume are halfway in the firebox? I would appreciate your knowledge.

[@TomsWorkshop42]

I’ve not heard the term semi-radiant before, but I would assume either partially in the firebox, or half of the elements extend into the firebox.

[@andrewfayers9147]

@@TomsWorkshop42 Thank you, it's a term Silvercrest use in their loco brochures.

[@TomsWorkshop42]

@andrewfayers9147 I’ll have to try to get a look inside one to see what they have so I can compare.

[@RobertBrown-lf8yq]

Hi Tom 👋🏼 Can I ask what grade of stainless you used? Is it Duplex? I liked the idea of tube-in-tube…. a greatly simplified construction compared to the side-by-side tubes. I’m building a 5” gge. Mogul (1856 from Baldwin), and have been struggling with the superheater design. Thanks for the video, Regards Robert

[@TomsWorkshop42]

Hi Robert, The stuff I found was seamless 316, I personally think it’s good, and I do like this design for how compact it is in the smokebox.

[@МихаилАсламов-в9ч]

Это мегакруто!!!

[@thisnicklldo]

Very interesting, thanks. So re-making the superheater doesn't require boiler re-certification, I guess?

[@TomsWorkshop42]

No, because it’s not a part of the pressure vessel, no different to any other piece of pipe attached to the loco.

[@TomsWorkshop42]

I think you’d be surprised just how much they do, especially when they’re fully radiant.

[@kaibroeking9968]

A really nice job. Out of curiosity: Was the superheater steamtight on the first attempt, or did you have to re-weld a few places?

[@TomsWorkshop42]

To be honest I didn’t have time to test it out, but it seems to be good, I’m going to remove them to do a proper hydraulic test on them over the winter, I’ve got another mod in mind too which I can demonstrate easier if I take them out too…

[@haroldpearson6025]

Very little superheating takes place in a model, just some steam drying.

[@michaelbright9162]

My question relating to superheating as always been as follows. With all the effort in making superheaters can the supposed benefit be felt when sitting on a driving truck and running on the track?

[@TomsWorkshop42]

Yes, it can. I do notice a surprising difference in water consumption, which must in turn lead to coal usage, also first hand evidence, a locomotive of mine which used to not have them, if any water carried through the regulator then you would feel the cylinders knocking and have to get drain cocks open fast, once superheaters are added, same scenario and the loco just takes off as the water turns to steam in the superheaters and carries on running for quite a while even after closing the regulator. The longer the run and larger the load, therefore the hotter you get the fire burning, the more effect you can notice from them.

[@TomsWorkshop42]

You would be surprised just how much they do, especially if designed properly. If they are not radiant then I would agree.