Tiny Stirling Engine

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Stilldrillin:
"Pretty poor night" , Nick? ...... I don't think so! :scratch:

Two off, shiny, adjustable components. Plus the lessons learned during their manufacture. :thumbup:

Also, thinking inside the box, while eating a bacon sarnie..... Who could ask for much more! :lol:

Hope things go even better for you this eve. :D

David D

NickG:
David, thanks for putting a positive slant on that - think I need to do that more often when I make rubbish! :lol:

:lol: Yeah, if it takes bacon sarnies to inspire me, think I'll do more of that in the future!

Hope so too, approaching the home straight now.

Cheers,
Nick

madjackghengis:
Now thats odd, Nick, I was having a couple of bacon sandwiches the other night, and I got a great idea of what to do with a cylinder I'd bored and finned out of some cast iron, and fitted a piston to, but didn't have exactly what kind of engine it should be part of, chosen yet. Must be something about bacon, it's great for seasoning cast iron pans and pots as well. Must be some special brain food in that bacon, got to eat more of it. As David said, hardly a wasted night, just a bit of learning is all, and a couple of shiny parts to boot. :poke: mad jack

NickG:
Haha, it must be - will ask the wife to add some more to shopping list as I need some inspiration right now, instead of perspiration :lol:

:offtopic: Earlier I had a nice phone call saying the garage had sorted my other car that conked out, they've changed a couple of parts out of good will but the real problem was the use of supermarket fuels - strange nobody else has the problem I thought. Anyway, merrily went along to pick the car up and the light on the dashboard and fault came flashing back up before I had managed to get it into 1st gear! At which point my blood reached boiling point and I politely told them to shove it! I want them to exchange the car for something else, but it remains to be seen what they'll offer me for the car they don't know how to repair. That's not my fault, I can see this being a long drawn out argument. :bang: Meanwhile, back to my mum's volvo!

There's my excuse for not being in the garage - getting abit late now but I may go and do an hour, might help me unwind a bit

Nick

NickG:
Well, even though it was a late start, I did an hour and a half in the garage last night. Had to keep the momentum up! I started by lightening the displacer, drilled a load of holes, not right through and superglued some thin plastic over it. I don't know yet if it's enough, it's probably only 30% lighter. I was going to make a backup with some closed cell expanded polystyrene stuff from the bacon butty box, but as Bogs suggested, the glue I tried just melted it, so I'll need to get the proper stuff for the job or find some thicker material to make it from 1 lump.

After that I turned the piston from the graphite - that stuff gets into all the little scratches in your fingers and doesn't want to wash out! I found that the bore of my power cylinder is slightly tapered so it probably won't work. I reamed it so it shouldn't be the case, really I would need to ream to next size up but I only have the odd few reamers so don't have anything to do it with now. Anyway, I've turned a piston and it seems a reasonable fit but I can't really get a feel for it until the whole thing is assembled.

Remaining parts are 2 small ends - 1/8" dia brass with a hole drilled through, a slot in 1 end and a cross hole, and the crankshaft which is the most complex component. If the solid version fails I will have to build one up and loctite together I think, might be easier anyway.

No pics, not much interesting to see but will take some tonight. Night off tonight as am off to pub for a much needed drink. Just realised it's work xmas party on Fri night too so I'll have to get my skates on on Thursday.

Nick

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