Robinson Hot Air Engine.

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NickG:
Can't wait to see the results! :)

Stilldrillin:
Well, I've finally got around to having a look at things, and making a few notes......

I've also ordered new 4 & 6BA screws.

Do I paint inside the castings? Inside engine and water jacket?

I will not use "water" in the future, only coolant, or top up antifreeze/ summer coolant.

I can make a new steel section for the broken foot. Do I silver solder it in place?

David D

madjackghengis:
Stilldrillin', if I may humbly offer a suggestion, I would find some soft cast iron and use it to repair toes and feet, and silver solder it on, as it always looks better than steel on cast iron, and it matches the thermal expansion rate as well. Try to ignore the drool I leave on this post, as I look at all your parts and imagine putting them together in my own shop for my own running pleasure. You've got a real "peach" there, and it should be a real runner when you get it all done. I'm looking forward to the finished machine, running in a video. :mmr: :poke: mad jack

Dean W:
David, I shall jump in line behind Jack with drool apologies. Maybe American are just a bit.. drooley. I dunno. Watching since the start, I'm still enjoying your restoration thread here. Oh, and I still really like this Robinson.
Considering how much rust you found, I would paint it inside. If you heat it without coolant, it is bound to condense some moisture
in there. Don't you think?

Dean

Stilldrillin:
Thanks for your replies Chaps! :thumbup:

Jack,
Just remembered....... I bought 2 cast iron weights from a car boot sale some months ago, 2lb & 1kilo. Hacksaw time! :D

I was unsure if cast iron could be silver soldered, by me. (Only done silver soldering once before). ::)

Dean,
Yes, I agree re-moisture. Common sense really...... :thumbup:

The recent weather has reminded me, winter is coming, and my workshop becomes a very uncomfortable place......

I have improvement plans for this engine. Thermo syphon cooling. Ballrace bearings etc.
But, the sensible thing will be to rebuild, to get a reliable runner. Then improve as time & weather allow.

David D

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