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Date: Mon, 30 Apr 2007 15:55:06 -0600
From: Bob White <rlwhite@comcast.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] trimmed prop
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Ouch! Steve,

If It's any consolation (and I know it's not), I shortened my prop a lot
more than that and wish that's all I had done. :)  Sorry to see the
mishap though.

Bob W.


On Mon, 30 Apr 2007 15:01:55 -0600
"sboese" <sboese@uwyo.edu> wrote:

> On Wednesday of last week I made my first XC flight with my 13B powered
> RV6A.  The flight was from Laramie, WY, to Benson, MN, with a distance
> covered of 507 nm.  It took 4hr 15 min non stop using 30.4 gal of fuel
> leaving 7.6 gal reserve.  We started at an initial gross wt of 1796 lb and
> cg of 73.2 in. That was my first excursion to density altitudes less than
> 7000 ft.  It was really fun to see climb rates over 1000 fpm with 1700 lb
> gross wt at 3200 ft density altitude and to feel the increased acceleration
> on take off.  Static rpm at 3200 ft density altitude was 4870 with 27 in MAP
> and showing 11.1 gal/hr fuel consumption rate.  That makes me think I could
> use a prop with less pitch.  My extrapolation of the mixture table for the
> EC2 with the snubbers installed worked very well with the higher manifold
> pressures that had not been tried previously with my setup.  That was good
> news.
> 
> The bad news is what happens when I forget to remove the tow bar and feed it
> to the propeller (see attached photo).  No injuries or other damage occurred
> as far as has been determined at this point.  The 12 hour drive back home
> yesterday gave me plenty of time to reflect on my stupidity.  I concluded
> that my "experiment" was probably not the best way to investigate the effect
> of a smaller prop.  Needless to say, if someone has upgraded to the 2.85
> drive and has a prop for a 2.17 drive for sale, I would be interested to
> know about that.
> 
> Sheepishly,
> 
> Steve Boese
> 


-- 
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