A Marine Condensing Engine

Hi Ramon. I really enjoy both your and Jason’s builds, very inspiring and providing a wealth of ideas on how to machine some of these complex parts so please keep up the good work!

Regarding this engine, it looks a fascinating build and a marine engine has been on my bucket list for decades. This one fits the bill as I also really enjoy carving lumps to make the castings. Current engine build is( about to be started is a Mconies diagonal, and the main frames will be ci or aluminium, not decided which yet
You talk about downloading the drawings as a pdf, but I have searched both your build blog and the one on MEM and can’t find a reference. Could you please provide a link or information of how to obtain them?

I think they use to be on the now defunked John Tom site.

Hi Zan, Jason,

I wasn't aware that the John Tom site was no longer available. If you are talking about the marine engine article I have them on file so could easily send you copies of them if you let me have your email address.

Good luck with your Mc'Onie - a lovely engine but do check the measurements on width build up between the frames as there are one or two that can lead you astray. Also the position for the governor pedestal - that's dimensioned off the edge of the baseplate at opposite datums. Position it relative to the (assembled) crankshaft position for best results.

With the complex valve gear I expected mine to have issues with the set up but I worked to the drawings on all components and it ran straight off.

Best - Tug

Edited By Ramon Wilson on 03/01/2023 13:34:23

Ramon, Have you any updates on this project?.

Hello Bert,

I'm afraid to say that no, it's still as my last posting update. I did finish my plastic project and have begun the slow process of downsizing my workshop.

It is my firm intention to finish this engine however and hopefully later this year but it will be my last I think. The desire to continue machining in my old age is very low. That's not to say I will stagnate - I've far too much on my plate for that to happen.

Thanks for asking - I will be back about this project but I don't think it will be until late in the year.

Kind Regards - Tug