Website update.

The site seems to work well, nice quality and interesting images, I look forward to seeing the site grow.

Thanks for the comments - Credit for the site as it stands lies with Paul Evans of Internal Fire to whom thanks are due. My input so far is for most of the pictures, the site will hopefully grow when I overcome my technological dyslexia and have a go at adding some of my own content. Trouble is I get too easily involved in the engines themselves.....

Another issue I have noted is that few engine websites have pictures of their authors - I managed to get a pic of me (courtesy of another group member) with one of my engines (Warsop naturally!).. Any more takers for revealing themselves?

Cheers

Dan

Scuse my iggorance, I remember these rammers in use but how do they work? I can see a weeny carb on top and what I take to be exhaust ports about half way down, but what happens in-between is a mystery to me.

It's a large single-cylinder OHV inlet, ring exhaust port, very slow-running stationary engine....

I used to test them at my first job in the early 1960's.

I'll let Dan explain the workings, I can remember most of it and I think I posted here a couple of years ago on the subject.

Kind regards,

Peter

Peter Forbes Prepair Ltd Luton, UK email: snipped-for-privacy@easynet.co.uk home: snipped-for-privacy@easynet.co.uk

I remember them being 'bounced' to prime (they were quite a source of fascination to me as a kid when we moved onto a part built housing estate in the late 1960's), so I assume an automatic inlet valve. I can then see that a spark would ignite the mixture and force the ram down with some force. Excess exhaust pressure would then escape from the ports and the weight of the thing force the ram back up the bore, but what then? The remainder of the exhaust would be trapped and there would be no vacuum to open the inlet on the next bounce. Is there a mechanically operated exhaust valve in the 'head' as well as the ports?

There is a mechaniclaly operated poppet valve in the head, actuated by the magneto trip lever, so when you fire the thing the inlet reed valve is closed off to give compression.

Kind regards,

Peter

Peter Forbes Prepair Ltd Luton, UK email: snipped-for-privacy@easynet.co.uk home: snipped-for-privacy@easynet.co.uk

I knew what I meant :-))

Kind regards,

Peter

Peter Forbes Prepair Ltd Luton, UK email: snipped-for-privacy@easynet.co.uk home: snipped-for-privacy@easynet.co.uk

So did I!