Robin Ream wrote:

    I'm building a Velocity, and that's one of the airplanes with the propeller on the wrong end
;-)    A unique problem we have is the relatively small prop diameter necessary to give us
adequate clearance on rotation, and here comes the can of worms:  The factory recommends no larger
than 67 inch prop diameter to give reasonable clearance on rotation and landing.  --  I'm using
the exact same 20B engine set up as Tracy Crook so there is a lot of horsepower to absorb.  --
Since I can't swing a big prop, it opens up the debate on redrive ratios again (however I've
already got the 2.17, so that's what I have to work with anyway, but in this case it might turn
out the best ratio by default because of the short prop length.)
    What speaketh the engineers?  How do you turn a whole lot of HP, the limitations of a short
prop, and a thin wallet into something useful?  ----  I'll bet this makes the RV look like a lot
less work doesn't it :-)

Thanks guys,
Robin

More blade area.

Paul Lamar
 
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