Mystery engine

[David AmbroseParticipant @davidambrose86182]

I’ve just acquired this four cylinder oscillator.  It has a weird feed pump, and to my eyes the lubricator is inverted. Some of it very crude, but the pipe work is immaculate.

Any ideas as to what it is?

[DalboyParticipant @dalboy]

This would be interesting to see if you can clean it up and get it running even if it is only on air. I can’t help with identifying it

[JasonBModerator @jasonb]

There is a very similar one on Station Road Steam which suggests they may be to a published design.

Small V4 engine

This also looks to the same design but unfinished

https://www.easyliveauction.com/catalogue/lot/ad95c130c6b15169f6d0a43955e78d0f/1f1638c9faeb7c2641b7b1e9c67628d0/tuesday-15th-wednesday-16th-september-sale-to-include-home/

[David AmbroseParticipant @davidambrose86182]

That’s definitely the beast.  I plan to clean it up and try it on air, but something is stopping it from turning over. I suspect the feed pump.

[David AmbroseParticipant @davidambrose86182]

I think it may be a Peter Arnot design.  There is a similar picture on the Sarik Hobbies website. https://www.sarikhobbies.com/product/arnot-v-four/?v=79cba1185463

[JasonBModerator @jasonb]

That looks very much like it.

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