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| Robinson Hot Air Engine. |
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| Stilldrillin:
Hi Stew! Yes, I didn't see any explanation either! Though, I did know about them..... :thumbup: I really loved the vacuum/ ratchet engine, which is behind you as you watch the Robinson. I'll post a vid, when I've got the time...... ::) David D |
| Dean W:
I see how it's supposed to seal, and it makes sense. A gasket around the bolt hole pattern inside the large square/round/rusty casting. Same gasket goes up, over, and back down on the spigot thing that goes in the slot in the cast part of the hot end. Well, that's how I'd do it. No water would get where it shouldn't. Thanks for the take-apart pic, David. I needed to see that! ; ) Dean |
| NickG:
Yep, Looking at the picture you need a gasket like that to make an effective seal between the transfer port and u semi circular cut out in top of displacer cylinder to stop air leaking into the jacket and vice versa. Bit like a sump gasket - they are usually rubber though. Nick |
| Stilldrillin:
Well, I left a part in some vinegar overnight. Worked a treat. Rub with a toothbrush, rust gone! :D Today was shopping day. At 13p a bottle, I stocked up..... Other parts are pickling now. :thumbup: Dean, Nick. Not sure I understand your gasket theories. Sorry! ::) The port tube (if it is a through tube), is threaded at 90*, through the joint, but offset by some 75%..... Sorry, the female thread is out of focus! ::) I think this is the other end of the tube, and should have come out first. But, it won't unscrew, and the brass plug was a press (hammer?) fit. Guess it will need drilling out..... Things should be clearer tomorrow, when the vinegar has done it's job. David D |
| NickG:
On the otherside of the casting where the port is, there must be a cross hole that lines up with a hole in the base of the power cylinder? |
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