Does anyone recognise this please. I've had it for years and thought it S-T but it doesn't match any S-T I've seen. Its suggestive of a single cylinder, spark ignition two-stroke marine with an 18mm plug. The head is 5" OD and the plain combustion chamber is 3" dia. http://www.petternut.co.uk/unknownhead.jpg Time to show again. Ideas welcome thanks Roland
Roland, No doubt our eminent new editor of SEM would be only too pleased to include it under "Identity & Assistance" . Looks interesting! Eric
Hi Roland, From 1st glance it looks like a P3/P4 head, but with some differences..... Am correct in saying the head is slopped? Is the “tap” a to do with the waters ways or a decompressor/priming valve? Is the out let to the right linked to the water way? it might be something to do with a water cooled exhaust? Very intriguing. Cheers Steve
Steve The head slopes but not the combustion chamber. The outlet is water and the, probably non-original, "tap" connects to the combustion chamber so might originally have been a primer. cheers Roland
Well its a odd thing, I dont have a P4 anymore to compare the head, maybe a attempt at water cooling the exhaust of a early marine P5 which resemble the P4 with a gearbox. Cheers Steve
Yea its diffrent from the standard head P4/5, with the extra high water outlet it took to me that it could of been an idea of creating a water cooled exhaust, before the better know style of P5M was introduced? Cheers Steve
Found it! Sorry I know it's an old thread.... looks like it is off a Solo, which looks a lot like a P4.... https://www.youtube.com/watch?v=Q3IOyGcvrzg Model S 31 Cheers, Steve
According to the YouTube caption it's a steam engine. It's the first I've seen with a magneto and spark plug
Yea did think that, was looking for a video of a Stuart S.... and stumbled along the Solo and I thought I recognise that head! Cheers, Steve