Robinson Hot Air Engine.

Gallery, Projects and General > Project Logs

<< < (10/38) > >>

Stilldrillin:
Well...... Am I thick, or what!? The reason for the bodge has just dawned on me....... :bugeye:

The builder has measured the depth of the top casting, to fit the cylinder spigot.... .. And forgotten to include the thickness of the steel cover plate! :doh:

The spigot was then too short. Adding only a ring to make up the length puts the 1/16"BSPT thread through the joint.

I would have shortened the spigot by another 8mm or so, and grafted a piece back on, to give correct overall length. The taper thread would then have passed through a solid cylinder wall.

I think it is called hindsight....... :bang:

Keep calm, and carry on.

David D

madjackghengis:
Well David, it sounds like you've found the fix to make that a real runner, and you may well have gotten that engine because the previous owner didn't appreciate the performance it had, and didn't know what to do about it. I was kind of hoping to hear you decide to pull, twist or drill out that pipe, and fix it in place as it was intended, so you can get the full pleasure out of your engine. With the ideas of circulating coolant that you have expressed, and finding this glitch, and having a plan that will fix it, I think you'll find the engine will run much better, and far more reliably giving you time to take real pleasure in it. I'm still pouting a bit for it being yours and not mine, but I've got enough hair on my chin by now, the drool no longer drips down noticably. I think your running video, for the finish, will be substantially different, and more enthusiastic, now that you've got a cure for that leak. That engine almost looks like a crowd, with all its parts moving when it's running full up, a real looker. I would definitely paint the inside with a top quality paint, and you won't be tearing it down some time down the road because of rust and nastiness leaking out from the inside. Fine work on chasing down the cause, and finding the missing distance. :bow: :bugeye: :poke: Now I'm really looking forward to a finished video :jaw: mad jack

Stilldrillin:

Thanks for your encouraging words Jack! :thumbup: The fun (circus?) continues...... :wave:

I had thought to make the most of what was provided by the builder. But, not any more! ::)

The lady's not well...... :scratch:

[ Invalid YouTube link ]

But, after a steamy few minutes...... :thumbup:

[ Invalid YouTube link ]

This was running "dry". Lasting about 15 minutes from cold, until the top end is too hot, for correct function.

Stripdown time ....... Again! :bang:

Will try to correct the problems correctly, this time! :smart:

David D

Rob.Wilson:
Its a Sweet runner David :thumbup:

I hope you get the leak sorted :dremel:

Rob

NickG:
David,

It seems to run really well, if only the builder had paid as much attention to the sealing faces etc as he had to the fits of the piston it would have been great. I'm sure you will fettle it though.

:thumbup:

Nick

Navigation

 Message Index

Go to full version