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Motorized Bicycle General Discussion All topics regarding bicycles with engines.

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Old 12-06-2008, 06:59 PM
Bikeguy Joe Bikeguy Joe is offline
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Default Re: has anyone seen this?

Yeah, it's a bunch of crap. (tech. term)
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Old 12-06-2008, 11:18 PM
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eDJ eDJ is offline
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Default Re: has anyone seen this?

The two piece rim/centrifigul clutch is an interesting solution to effect an idle.
I'm sure that with some thought there could be a way to do it. I'm just wondering if the way to throttle the engine would be thru the carb or the sequencial ignition to fire the cylinders as a hit and miss. Running on one cylinder and then bringing in the other two once under way.

When I was at the Wright-Patterson AFB museum I noticed several early aviation engines had valves with open external springs which weren't activated by any mechanical linkage. Just the vacuum or external pressure caused it to open and close. It was the first time I had ever seen such an arrangement. I'm sure the valve in piston worked that way.

As a matter of fact that powered pogo stick of mine (the PopRod/PoGoGo) uses a poppet valve in the piston.

I'm figuring a 3 cylinder radial with 20 to 25cc cylinders (like a small string trimmer motor) would sit within a 12" diameter circle on a 3.5" wide crankcase. So there could be room to construct the rim within a rim.
I'm thinking of that mono wheel motorcycle set up on a smaller scale.

With the two piece rim & centrifigul clutch configuration, it may take some thought to find a solution for manually locking the two parts of the rim so the bike could be otherwise only the center portion of the rim containing the motor would be connected to the sprocket chain.

Any thoughts on that ?

Photo of the mono wheel motorcycle below.

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Old 12-29-2008, 05:57 PM
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Egor Egor is offline
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Default Re: has anyone seen this?

It is hard to figure out exactly what this thread is covering. The Revo Wheel is just a small two stroke in a wheel. It is so small that it is easy to start just pedal. Everything is contained in the wheel, I guess it got expensive, as it never got to market. The interesting one is the engine in the vid. There are no dimensiones for that engine so it is hard to tell if it would work. One thing is the piston is only for moving the fuel air mix to the combustion chamber. That engine is so complex that I suspect it is not efficient. the Wankel engine is far less complex, again so dirty running that it needed an after burner. I doubt that the cam would last long,(the thing in the middle of the crank) and cooling would be a nightmare. It is fun to see another method of internal combustion. I doubt it would make it to market, even with all problems solved. Creative Engineering has information in the form of computer rendering to figure Thermodynamics, I'm just an old motorcycle mechanic. All they let me have now is a hammer, screwdriver and a file. Have fun, Dave
Its just a job. (Link) My shop is in the lower R/H corner.
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Old 01-05-2009, 12:36 AM
Upshifter Upshifter is offline
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Default Re: has anyone seen this?

How about this Cyclone Engine? Is it for real?

Gallery - Cyclone Power Technologies Green Revolution Engine.

It seems to be an external combustion engine, and I believe they have some running.
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