Mailing List flyrotary@lancaironline.net Archived Message #49905 previous message next message back to list

From: aviator@stinsonvoyager.com
Subject: RE: [FlyRotary] [Re][FlyRotary] More throttle now Scotty, we need it now
Date: Mon, 08 Feb 2010 14:44:41 -0700
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
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There was a guy here in San Diego named Maurice Brockington that had spent a great deal of time and his own money to develop a rotary-based engine. Had it tested many times.  Was targeting replacing turbines on twins. Last I saw the engine it was on a stand at EAA Chater 14 - looked beautiful.  I understand he died of cancer, It would great if we could find his work. 
 
-------- Original Message --------
Subject: [FlyRotary] [Re][FlyRotary] More throttle now Scotty, we need
it now
From: "Jeff Luckey" <JLuckey@pacbell.net>
Date: Mon, February 08, 2010 11:03 am
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>

Lynn Hanover said:
 
The port timing on the Renesis appears to be quite timid. I would like to see a bit of a developement program for an aircraft specific engine with earlier opening and later closing of the intake port. Maintaining zero overlap is of no value in an airplane, and a big improvement can be had with just a die grinder.
 
 
 
 
Lynn,
 
You’ve probably forgotten more about engines that I will ever know!
 
Based on your quote above (I’m probably dangerous w/ a die grinder), but the kind of mods you are suggesting seem pretty straight forward.  (besides, if I screw it up, it only costs me a rotor housing ;)
 
My questions are:
 
Q1.  If you start to reshape intake ports on a Renesis, how much can you do before you get into the water jacket?
 
Q2.  In a well-engineered aircraft installation, how much HP is a Renesis making?  In and RX-8 they are supposed to make about 225 HP.  Are aircraft installations getting that much?
 
Q3. If mods that you suggest above are made to get intake/exhaust overlap, how much increase in HP can be expected in an aircraft installation?
 
 
Thanks for sharing your expertise
 
Jeff Luckey
 
 

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