Mailing List flyrotary@lancaironline.net Message #41370
From: Bob White <bob@bob-white.com>
Subject: Re: [FlyRotary] Low compression rotors
Date: Sun, 3 Feb 2008 14:58:11 -0700
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Hi Bob,

You will get a little more power with the 9.7:1 rotors.  Back in 89
when they put them in, Mazda upped the hp rating from 146 to 160 for
the car engine. ref: Mazda RX-7 on Wikipedia,
http://en.wikipedia.org/wiki/Mazda_RX-7

Bob W.




On Sun, 3 Feb 2008 13:44:13 -0800
"bob.kaufmann" <bob.kaufmann@cox.net> wrote:

Gang

I have a 20B that I have taken the turbos off and will be using it in an
aircraft, a RV-10.  A friend of mine said that I should use the 9.7
compression rotors instead of the turbo rotors.  What say you all?  I have pulled the engine off to powder coat the engine mount and if I'm
going to switch rotors, now is the time before I hang the engine again.  I
have the flat plate on milling machine so I could make plates for the 20B if
people wanted.  I think I would be competitive.  I would like to do them in
groups of ten if people are interested.  Bob K Finished except all the parts aren't together yet.


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