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    It's been all quiet on the EAA Front.

    We had tried to compare it to the chapter owning an ATV and would a participant in the Youth Aviation program be covered riding it off road. It's a stretch,...
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    Sad to say, but you're correct. It would be a...

    Sad to say, but you're correct. It would be a lawyer's field day. That's why we are checking to see if such an activity could be done under the insurance umbrella of the Young Eagles program.
    ...
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    I would build a flying version of my 75% P-39...

    I would build a flying version of my 75% P-39 mockup that hangs in my hangar.

    Vince Homer
    EAA 292

    7626
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    I just discovered this thread and we have been...

    I just discovered this thread and we have been discussing the possibility of doing a Penguin as a youth build. It would also be a great recruiting tool for the chapter.

    Some of the possibilities,...
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    We looked at this contest and came to the...

    We looked at this contest and came to the conclusion there were just to many breakthrough technologies required. The craft has to be a very small, light airframe, the noise restrictions are severe...
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    CVT Test

    I have a rolling test stand that does exactly what d-omber suggests. It has 16 HP engine driving a go cart CVT which drives the prop. The engine runs at 3600 rpm no matter what prop or prop pitch...
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    Where to go next

    What is needed is either test data or a good mathematical analysis. Anything else is opinion. Since I lean toward hardware, I will try to develop some data.

    Vince Homer
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    Cvt

    Removing the variable feature kinda defeats the purpose. As far as weight reduction, the flyweights actually weigh only a few onces. It would appear that without the springs and flyweights the unit...
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    Power and efficiency curves

    Thanks for the reply.

    In the article I show the propeller power absorbed curve and compared that to the engine power curve. I was referring to the efficiency vs advance ratio curves to try to...
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    Hydraulic CVT

    Anybody have any idea how much one of these units weighs or what their operating efficiency is?

    The CVT belt/chain type units appear to be rather heavy. Anyone know what they weigh?
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    As the author of the article I admit bias toward...

    As the author of the article I admit bias toward this concept. If you look at a plot of propeller efficiency vs advance ratio one thing pops out. At higher pitch angles the efficiency curve is...
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