OS91FX Prop on Exelleron90

[fishgod at pobox.mtaonline.net]

I have been running an APC 15x8 for 3+ years on the OS 91FX and it has run
like a swiss watch.  It is on a 8.5 plane and it has unlimited vertical. 
Excelerates out of a hover. 

Michael Laggis


Original Message:
-----------------
From: Randy randy10926 at comcast.net
Date: Wed, 15 Dec 2004 18:27:23 -0500
To: discussion at nsrca.org
Subject: OS91FX Prop on Exelleron90


Ok I ordered an Ultrathrust tuned muffler for my OS91FX on the Excelleron. 
Since one of the reasons for building the plane and picking a setup is for
use at pattern primers, and I wanted an easy straight forward setup. 
Anyway thinking of changing the 13X8 apc for a 15X8 APC when I put on the
Ultrathrust tuned muffler.  They say you get 1k to 1.5K increase in top end
by using this product.  This should put the 15X8APC at approx the same RPM
as the 13X8 on the stock muffler.

Any suggestion or am I totally off the wall on this one?

Randy

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