flyrotary@lancaironline.net Mailing List Archive

Maurice's engine was a second gen 4 port that he had custom built by Racing Beat for the application. Used to appear on the cover of their catalog. He claimed that it dyno'ed at 210HP @ 6500RPM.

In about 1998 I approached Maurice about bolting his engine on my RV-4 to try to get some market buzz. He declined and instead made an arrangement with someone in Idaho to fly it on some sort of high wing bush plane. It never got installed and it took him about 5 years to get the engine back.

I think when he saw my engine run on my airplane he seriously regretted not taking me up on the 98 offer. He asked me if I'd consider swapping engines, but no way at that point.

I didn’t realize he'd passed away. Your right, that engine was a nice piece of work. Wonder what happened to it. Bet its collecting dust somewhere.

Mike Wills

RV-4 N144MW

From: aviator@stinsonvoyager.com

Sent: Monday, February 08, 2010 1:44 PM

To: Rotary motors in aircraft

Subject: [FlyRotary] Re: [Re][FlyRotary] More throttle now Scotty, we need it now

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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