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| Brass Stirling (#3) |
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| cidrontmg:
Hi, after 9 days without Net. Our house was (once again) hit by a lightning bolt, Monday 6th, and it (as usual) burned the cable modem, router, etc. Today we got it repaired, the telecom people had to change >200 m of cable also, and everything connected to it. We have had a wireless LAN here for some years, just because lightning bolts are a once-twice yearly thing, so no computers were hit this time. Itīs been "silent" here, Net-wise, and TV-wise... Good opportunity for starting (and almost finishing) another Stirling engine... I didnīt take many pictures, but some. The engine will look a lot like this. This is an image from "Maschinen im Modellbau", Jan. 2003, and as you can see, thereīs just a drawing without any measures. And some pictures of the finished thing. Not a construction article at all. In fact, thatīs the entire story you see. I hope this doesnīt come too close to breaking copyright. Anyway, I like the design, and will try to do something similar. I have some test tubes to use for something, so they will determine the size, +/-. The rest of the materials will be all brass, except the crank and piston shafts, ball bearings and some fasteners. Many of the screws will also be brass. Starting with the displacer cylinder (cooler), and the heads. This will be a small engine, the hex brass is 30 mm across flats, and the head fixing screws are M2X7 and M2x9.5. And hereīs the test tube as it will sit on the cylinder. Bearing support and the flywheel(s). You may have seen the flywheel in the other Stirling build pictures. Since then, Iīve drilled some holes in it, and turned away the crank disk. Parts for the base. The base plate will be much wider than in the drawing, because I had this brass bit in the junk. The base pillar will also be bored to be the work cylinder. And the base together. Cylinder not yet bored. And one more of the displacer cylinder with the test tube attachment ring. So, thatīs for today. More tomorrow, if thereīs no lightning strikes again... :wave: |
| madjackghengis:
Hi Olli, that looks like a very similar design as the Robinson, but but with the displacer and power piston reversed, but with same method of offsetting the two by 90 degrees. It looks like it will probably be pretty efficient, and a good runner. I'm looking forward to seeing it finished and running. Sorry about the lightning strike, hope you get everything straightened out from it. :bugeye: mad jack |
| NickG:
Nice engine Olli, you've really got the bug for these stirlings now!!! |
| Stilldrillin:
Looking good Olli! :clap: Never seen that drawing before. As Jack says, it's very much a twisted around, Robinson! :thumbup: Don't like the sound of the regular lightning bolts..... :bugeye: Keep safe, stay happy! :wave: David D |
| arnoldb:
That's a really nice start Olli :thumbup: :thumbup: From the sound of things, you should consider a lightening powered engine :med: :beer:, Arnold |
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