Bobby, 

We won't be doing any development of a side port engine for aircraft, there is just no need to.  The availability of housings would be the only reason and there are at least 2 shops working on making new 13B style housings. The mods in the Renesis are done to work in the car and keep emissions down and torque up. The higher redline was done to keep the HP at least the same. The side ports came largely out of Mazda's work with the hydrogen fueled rotary where the wide flammability ratio of H2 really needed the ports closed to prevent backfiring. Your method, supercharging, (either turbo or direct drive) IS the best way to power up the Renesis. With P-porting and housing exhaust we have found the ability to tune for lower RPM and still really up the NA power. That is great for longevity and efficiency. Also the plumbing is simpler for both the intake and exhaust to fit under a cowl. The engine gearbox in the video is off the dyno now to be mounted in an RV-3. All of it under the cowl. Just slightly longer as the rotary is a bit lighter than the Lyc. Not a lot in this still iron sideplated version, but we are looking at Compacted Graphite Iron for sideplates for a almost 50% weight reduction, (over the standard side ported sideplates), and long term reliability.

Bill

On Thu, Oct 20, 2016 at 2:44 PM, Bobby J. Hughes <flyrotary@lancaironline.net> wrote:

I would need to breakdown my spare renesis if / when it’s time. Still not sold on reliability but I’m getting there.

 

On another note, I located two Daryl Drummond Renesis dyno plots and a partial picture of the Pro Mazda race exhaust header. The dyno data and picture seen to support the header information I received way back in 2005. The information came second hand but included tube sizes and lengths. The center port is a different size tube and length.  I was told at the time I could not disclose any details about Star Mazda’s development work so I didn’t.  “The engine made exactly 10% more horsepower at 5900 rpm and went up from there.”  Myself and another flying renesis on the list are considering building one for testing. There may be a few more HP in the side port engine.  Picture and one of the data plots below:

 

 

 

<image001.jpg>

 

 

 

 

Bobby

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]
Sent: Thursday, October 20, 2016 4:07 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: [Flyrotary] Re: Just a bit of a update

 

Bobby, Working on getting setup for the P-ports now. Once we decide to release them I will post about it. Do you have housings put aside for it?