REFLECTOR: spinner and Howard Handelman

[Kevin Baker]

Hi David
What prop pitch/length do you have?

Thanks
Kevin

.

On Apr 11, 2012, at 7:17 AM, "David Ullman" <ullman at robustdecisions.com> wrote:

> Anyone have a feel for the effect of adding a spinner on a Velocity?  I have
> a Catto prop on an SE.  I can get a spinner from Chris Wade for $325.  He
> claims better cooling (so far not a problem with my plane, but it isn't
> summer yet).  Any effect (positive) on speed?  Any thoughts on "bullet" or
> "stinger" style.  Stinger has a long tip that looks like a pitot tube
> sticking out of the spinner (if on a tractor airplane).
> 
> I almost like the "business end" look on my plane without a spinner.
> 
> Flight test continues around that fact that weather is still iffy.  Working
> on getting speed under control on final.  Still very high, long and fast.
> Better than the alternative. Takeoff distance with 200hp IO 360 C1C, a Catto
> prop, half a tank of gas, 50 deg at near sea level, me (220lb) and 100lb
> copilot ballast is about 1700-2000 ft.  Seems about right with this prop.
> 
> Also, I ordered the Dynon autopilot servos.  When I get them in and working
> I will start running Howard Handelman's process for determining the exact
> characteristics of the plane.  See
> http://www.eaa.org/experimenter/articles/2009-08_drag.asp.  It would be
> interesting if a group of us did this to compare plane characteristics.  Any
> interest?
> 
> Finally, I will be in Phoenix later today and will be visiting with Matt
> Bucko to see his progress.  
> 
> David Ullman
> N-444DX Velocity 
> EAA 292 President
> david at davidullman.com
> 541-754-3609
> 1655 NW Hillcrest Dr
> Corvallis OR 97330
> 
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