Multi Blade Props at Nats

[David Lockhart]

15.75-11  blade (re-pitched from 15.75-13)
OS 10 EFI
Asano Header and pipe
S&W 20/20
7900/7700/1500 - Peak/launch/idle RPM
10 lb 13 oz EMC
Typically less than 90 dB

I did switch to a 17-12N in the extreme wind on Tuesday - which was the 
1st time I have used a 2 blade in a contest since working up the 15.75-
11.  Speed control with the 15.75-11 is very easy - it is not super 
sensitive to throttle position and brakes very well.

Dave
DaveL22 at comcast.net

----- Original Message -----
From: RUDDERCABL at aol.com
Date: Sunday, July 20, 2003 10:08 pm
Subject: Re: Multi Blade Props at Nats

> In a message dated 7/20/2003 9:18:36 PM Eastern Standard Time, 
> rcaerobob at cox.net writes:
> 
> > Yeah, Dave wrote me about his.  It is one of the custom twist 
> jobbies that 
> > he makes...bet it worked just fine.
> >     Any others?
> >  
> >  
> > 
> 
> Bob
> 
> Dave used that prop at team selection also. Very quiet and pulls 
> well . Nice 
> combination with his plane and engine . 
> I also used an APC  15x13W  3 blade on my OS1.40 powered Focus . I 
> liked the 
> results of this combo but changed to 2 blade on Tuesday when the 
> wind blew so 
> hard. I believe Dave also went back to a 2 blade in the extreme 
> wind . 
> I don't know if any-one else used one .
> 
> Robert
> 

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