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Thank you for the chart Blockwitch, interesting, maybe this only relates more to larger steam loco's ? I have a couple of Stuart Turner engines, one from the 1920's and all original which still runs perfectly with it's brass and bronze mix, all the Mamods and similar were brass...

Yes bronze would have been better but I dont have any left, I was using up my scrap and offcuts. Anyhow.....problem solved, the piston bore and the guide tube are separate pieces silver soldered together, one of them is out of line, only by a tiny fraction but enough to push the piston to one...

I should have added a couple of photo's so you can see what I'm talking about, but my camera is pretty poor as you can see. You can just about see the scoring on the piston and this after turning it by hand for a very short time, it just gets tighter and tighter once you oil it.

Hi and thanks, I should have said that this is a small steam engine, or will be :), it has a stroke of only 3/4", this is my 4th scratch build and I've used brass in brass once before with no problems though they do get a bit scored eventually. This is different, its digging in to the bores as...

I had some bits and pieces left over from other projects and decided to make a "Frankenstein" engine, no real plans, I would make the pieces fit. I had 2 brass cylinders with 7/16 bores and a crankshaft that sort of matched. I found an old base I could adapt and lots of cut off's so off I went...

Thank you guys for the help, got round to finishing the little engine today, the frame might get painted but I sort of like the raw metal look, after all, it is a steam Harley :D It's 5" wide and has a 7/16 bore and it runs very nicely in both directions, also self starting. The inlet and...

Thanks Ved, some nice work there, but what I need to know is how the ports should link to each other for a double acting twin cylinder oscillator when its a V twin. I think my diagram is right but would like some confirmation. If I get it wrong they will work against each other. The pipes will...

I've been sitting thinking about this, I'm pretty sure I have it now, no other combination looks like it will work, so here's what I'm going with. Unless anyone can see a problem ?

Hi everyone, I've been building a new steam engine and its ready to be piped up. Its a double acting oscillating engine with a V twin configuration, the last one I made was the same but horizontal, and that's my problem, with the horizontal each cylinder operates opposite to the other (kind of)...

Sorry to bring this thread back but I need to say thank you for all the help, I've had the little engine running on steam a few times now, its a bit noisy, it blows out steam here and there and the timing needs some adjustment, but I'm delighted ! thank you guys :thumbup:

Ahhhh now I understand, I was wondering how these things worked......cheers Mike !

Thanks Mike, what a lovely boiler and engine, my flue gets very hot so I can see the benefits of it, something else for me to consider. I was looking at the oiler to the right of your engine, I have one similar but not connected yet. It looks like the inlet to the oiler is capped off ? I...

Thanks Mechanicboy, I honestly though the lagging I've seen on some set ups was for aesthetic purposes, now I know better. When I eventually get it all sorted out and bolted down I'll be doing the same.

Thanks guys, very helpful ! I've read a lot over the last couple of weeks but there's always gaps that dont get filled till you actually do it. I dont have a proper burner, its a thing I made up with a double wick, I dont think its big enough as I cant get the pressure much above 20psi on the...

Ah yea the steam oil thing I knew about, I had plenty of light oil inside and out to run it on air but I've read it emulsifies when mixed with steam, I just couldn't resist wanting to see it run on steam if only for a couple of minutes. Its going to get stripped down again and restored once I...

Hi Brian, didnt see your post, I've never seen that done, is that a normal thing to do ? it does make sense. quick edit..... so thats what the 2 little cocks are for on the cylinder ? I didnt know ! will try it tomorrow.

Hiya and thanks, by the time I had finished messing about the boiler was less than half full so I dont understand, it's weird, I dont know much but it doesnt make sense. I can understand how a little water might get forced up but not like a stream. I might try lifting the engine higher just to...

Hi everyone, I recently acquired a steam engine and boiler both made by Stuart Turner, the boiler is a 501 and the engine is 10V. The engine was a bit of a mess with parts missing and worn so I decided to get it running before any restoration work. After repairs I hooked it up to my compressor...