Mailing List flyrotary@lancaironline.net Message #52975
From: Mark Steitle <msteitle@gmail.com>
Subject: Re: [FlyRotary] Re: Tangential Muffler
Date: Sat, 20 Nov 2010 08:32:53 -0600
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Al, 

Yes, I'm talking about going from 202-203mph to 214mph.  As I understand it, additional speed on the top end requires a cube of the hp to obtain.  So, this would be very significant improvement.

I have a question:  How much increase in speed do you see when going from say 5000' msl to 18000' msl?  Until I get my Ox system up and running, I'm limited to 14k.

Mark

 

On Sat, Nov 20, 2010 at 8:04 AM, Al Gietzen <ALVentures@cox.net> wrote:

The positive news is that I picked up 10-12 mph on top speed!  So, it confirms my suspicions that the tangential muffler is too restrictive for my engine.  

Mark

 

Mark;

Pretty impressive.  Just as an estimate; if your speed went from 150 to 160, that’s about 20% more power.

 

Al


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