Mailing List flyrotary@lancaironline.net Message #28995
From: Tracy Crook <lors01@msn.com>
Subject: Re: [FlyRotary] Engine
Date: Fri, 6 Jan 2006 10:48:24 -0500
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sounds reasonable to me Randy.   You probably have the option of either raising the RPM limit to 7000 or P port to get the 200 - 220 HP.  I'd opt for the former rather than the later for cost & time reasons.   You will still be cruising at 6000 or less when geared and proped for the 7000 limit.  If you do go for the P Port route, I'll be very interested in the results.  Be very careful about location & size of the port though.  This is virgin territory you will be tackling.
 
Tracy
----- Original Message -----
Sent: Friday, January 06, 2006 10:33 AM
Subject: [FlyRotary] Engine

Gentlemen,
    I am reaching the point of purchasing an engine and trying to 
make a few decisions on what I want/need. What I have is a single 
seat biplane, what I need is 200/220 hp. Maximum airframe speed is 
180 mph. I would like to use a n/a Renesis engine, p-ported if 
needed, turning at 6000 rpm using the 2.85 PSRU. I like the 6000 rpm 
as it is easy on the engine. I like the 2.85 because the prop turns 
in the "correct" direction. Using the slower turning "monster" prop 
as has been discussed here appeals to me especially if it increases 
climb rate. Is this HP realistic with this setup?  If this setup is 
not the best for what I need then what is? I am not an "engine man" 
so my decisions will be based on the experience of others.
Thank you for your advice,
Randy

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