Search found 235 matches

by RGSP
Fri Sep 18, 2020 10:41 am
Forum: Sales and Trade
Topic: WANTED: Boiler for 16' Steam Launch
Replies: 3
Views: 66

Re: WANTED: Boiler for 16' Steam Launch

Given that you're an SBA member now, give Kevin Slater a call: as SBA President currently, AND owner of a boilermaking company, he has lots of contacts, and may be able to suggest something. Incidentally, I think his waiting list for new boilers runs to something like 2 years.
by RGSP
Fri Aug 28, 2020 8:52 am
Forum: Technical - Engines and Boilers
Topic: Electrically fired Boilers?
Replies: 12
Views: 456

Re: Electrically fired Boilers?

There's nothing wrong with being slightly bonkers: steam involves eccentrics everywhere! Conventional domestic immersion heaters are not designed to take any significant pressure, and I don't know what would happen if they were subjected to it. However, if you ran one through a 1:1 isolation transfo...
by RGSP
Wed Aug 12, 2020 7:17 am
Forum: General Steamboat stuff
Topic: Counter-clockwise Drill bits
Replies: 22
Views: 1205

Re: Counter-clockwise Drill bits

Going back to the original posting and request, drill-service.co.uk do a range of specialist drill bits including left-handers. I'm doubtful whether they'll have reduced shank versions, and some lathe or grinder work may be called for if you really need that, though a reducing adapter may be easier,...
by RGSP
Wed Jul 22, 2020 5:24 pm
Forum: Technical - Engines and Boilers
Topic: Machinest Question
Replies: 15
Views: 1318

Re: Machinest Question

Don't try and use hand taps for this: they may fatigue and break off with that many to do. As Bart says, though, with a machine tap, which will probably have spiral flutes, it's a doddle. Getting the tap etc. properly at right angles to the work piece is harder (for some reason) than with a hand tap...
by RGSP
Sat Jul 18, 2020 4:02 pm
Forum: General Steamboat stuff
Topic: Flying a (steaming) kite
Replies: 41
Views: 3483

Re: Flying a (steaming) kite

In my view, go with Swagelok Fittings, very reliable fittings. Agreed. Anyone who has done one of the approved swagelok courses on their fittings ought to agree as well. They are a form of compression fitting though, so is there some let-out clause for using them in boilers? There probably ought to...
by RGSP
Fri Jun 19, 2020 3:29 pm
Forum: Technical - Engines and Boilers
Topic: Viability of brazing a tubesheet?
Replies: 13
Views: 1080

Re: Viability of brazing a tubesheet?

I haven't done it myself, but model locomotive builders often use brazing for their boilers, and they tell me that getting everything hot enough is really rather difficult, even on boilers for the smaller models. I've done a fair bit of vacuum brazing of industrial pieceparts, and that makes a lovel...
by RGSP
Tue Dec 31, 2019 10:43 am
Forum: Technical - Engines and Boilers
Topic: VFT tube leak
Replies: 54
Views: 11258

Re: VFT tube leak

Don't be afraid to experiment. But don't go blowing yourself up! Surely the second half of that line can be reversed when politicians are the experimenters? Willingale Tubes are possibly the main suppliers of finished boiler tubes in the UK, and they go to great lengths with their tube bending syst...
by RGSP
Thu Dec 19, 2019 11:18 am
Forum: Technical - Engines and Boilers
Topic: VFT tube leak
Replies: 54
Views: 11258

Re: VFT tube leak

Wicksteeds (https://wicksteed.com/wicksteed-products/tube-expanders/) make a big range of tube expanders, and while they aren't cheap, you only normally need one for a boiler, and compared with the cost of a new boiler they're not expensive at all. There must be a comparable manufacturer in the US w...
by RGSP
Fri Nov 15, 2019 9:57 am
Forum: Technical - Engines and Boilers
Topic: Cylinder Sleeves
Replies: 5
Views: 2262

Re: Cylinder Sleeves

With aluminium it is SOMETIMES possible to convert its surface into a hard anodised layer, which is wear resistant and can be suitable as a cylinder surface, but not all grades of alloy will allow good strong anodising, and in any case finding someone to do it properly may be more difficult and expe...
by RGSP
Sat Sep 14, 2019 2:16 pm
Forum: Technical - Engines and Boilers
Topic: And Now for the Twin
Replies: 80
Views: 33254

Re: And Now for the Twin

Now you've got all those stresses to either get rid of or live with. I recommend marinading the welded unit in something which will produce a thin organic film on the steel, having dissolved a bit of grease beforehand. Something around a 4% v/v solution of methanol in pure water would do. If need be...