Ellwood Hybrid - Single Cylinder Reed Valve Intercooled 4 Stroke Engine

[Oldfisti]

Interesting concept here...

http://www.freewebs.com/ellwoodhybrid/index.html





"All sorts of interesting custom bikes and engine projects are coming out of Sweden all of a sudden, or at least, I'm just coming across them, and John Ellwood thought we might like to see one more, it's his Ellwood Hybrid, a single cylinder, 4 stroke with reed valves, from a 2 stroke, mounted on the crankcase directing the crankcase pressure to charge the intake twice per power stoke. The exhaust stroke pumps the intake once and the reed valve holds the charge, the intake stroke pumps it the second time when it goes into the cylinder, so you have a 2 stroke like pumping action from under the piston and a 4 stroke firing cycle."      from The Kneeslider

[Oldfisti]

Question:  Is that a Duc in the lower right of the pic?

Sportclassic?

[BastrdHK]

Question:  Is that a Duc in the lower right of the pic?

Sportclassic?

No, not a sportclassic, but definitely a classic Ducati.....not my strong point, but I would say its a racer from the '60s by the shape of the tail and tank 

[Popeye the Sailor]

Jesus-you people are hopeless.


They post a beautiful, new motor and you're discussing the duc in the picture? Really?

[Speeddog]

Jesus-you people are hopeless.


They post a beautiful, new motor and you're discussing the duc in the picture? Really?

Not everybody can be so hard-core geekly as the rest of us. 

[causeofkaos]

if you take the time and goto his website and read the history behind that motor, did not look like he had a lot of luck with it. 

[He Man]

if you take the time and goto his website and read the history behind that motor, did not look like he had a lot of luck with it. 

its ironic because the 2 stroke is simple in nature, and when you look at the 500cc diagram, it looks simple as hell. you still have to run 2 stroke fuel dont you?

[Oldfisti]

If it's passing through the crankcase I would say definitely.

[Norm]

Definatly "ouside the box" thinking. Let's give him a cheer and see what comes next.