V Twin model engine

crankbndr Mon Nov 25, 2013 7:59 am

Anyone know what this is?
http://www.ebay.com/itm/271330196066?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649

V Twin model engine Engine10

roddie Mon Nov 25, 2013 8:12 am

No...

but it looks big, until you look at the fasteners. Then again; those could be #12 Phillips heads... It looks to be sitting on felt though... which would make it pretty small.

(Edit) just looked at all the pics... it's big!

roddie Mon Nov 25, 2013 8:18 am

I'll bet it's Italian... maybe off of a motor bicycle. (because of the sprocket on the output shaft)

crankbndr Mon Nov 25, 2013 8:25 am

Its small, less than 4" tall

OVERLORD Mon Nov 25, 2013 10:23 am

Looking thoroughly at the pictures, I think it's not an engine at all but should look like one.

1. The output shaft with sprocket is not in the centre
2. The bevel gear driven thing with 2 wires coming off is not a magneto or a distributor with points. Could be a HT distributor only but there is no 3rd wire
3. The aluminium tubes for the rocker arms end up in the circular mounting ring for the pseudo rocker covers
4. The holes for spark plugs are machined in the cooling fins and not in the cylinder
5. I can't see a carb. only an air intake.

Looks like a modified air compressor to me.

Tinker Terry Mon Feb 17, 2014 2:34 am

Looks like it may be a hummingbird engine. They run on compressed air etc. The (what appears to be intake ports) exhaust ports at the bottom of the cyl release pressure. When the piston reaches TDC valves allow pressure in pushing the cyl which pushes the piston down. When piston hits BDC the exhaust pots are open. To relieve unused pressure. Fly wheel momentum brings piston back to TDC valves open, stored pressure pushes piston down etc repeat. Many variations and applications including model airplanes.

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V Twin model engine

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Hummingbird?

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