Poul Woelfle has his two rotor AIXRO running at 11,000 RPM
 and 130 HP. Probably weighs next to nothing. My guess is
 is less than 75 pounds not including the PSRU.
 The major breakthrough is Silicon Nitride rollers in
 the rotor bearings. Twice the operating temperature
 of steel rollers. Widely used in NC machine tool spindles and
 turbo chargers.

 The go cart world will never be the same.

 Poul has the squarest combustion chamber of any rotary on the
 market. That allows a super large p-port for better
 breathing at high RPM.

 http://www.karting1.co.uk/wankel-kart-test.htm

 The AIXRO supercharged engine holds the worlds altitude
 record for rotary engines at 27,000 feet.

 Austro Engines new AE75R scaled up Norton/Midwest based engine
 is very close to certification. It is 50% more displacement
 than the Norton. HP is 75 HP at 7000 RPM in one rotor form. Over 500 one
 rotor 50 HP engines have been sold for for Schhicher Motor Gliders.
 Engine core weight is 61.7 pounds. Fire wall forward with cooling
 system and coolant is 78.5 pounds.

 This would be great in two rotor form at 150 HP.

 Paul Lamar @ Aero

 Paul,

 I have been biting my tongue on this one and have been waiting for someone
 to bite. No one did.

 Doesn't anyone see this for the breakthrough it potentially is?

 By using the Ceramic Bearings my guess is they picked up a great deal of
 RPM's. I do not mean to put words in anyones mouth, but will this let
 AIXRO
 approach an "Oil Free" Rotary (a-k-a, Dr. Bryzik's (diesels in the 80's) ?

 Does anyone grasp the significance of that?

 In the Gas Turbine Arena significant time, money, and treasure have been
 spent on trying to develop Integral Starter Generator(s) and Oil-Free
 "Foil"
 bearings to in essence to eliminate 2 systems or integrate them enough to
 potential reduce nacelle diameter. Some of what has been done in the gas
 turbine arena falls into the do not ask what I do for a living type of
 stuff, but that is ok. But the point is, in terms of Rotaries is this,
 (could this) adaptation of Ceramic Bearings be the (or a) key feature to
 getting a "Charge Cooled" engine (Like Eric Barger's Rotamax) to truly
 leapfrog other engines and work by reducing thermal loads on other heat
 sources other combustion?

 On a tangent question, has anyone ever thought of utilizing these coatings
 for further reduction in friction and again eliminate the load or reduce a
 system entirely?

 http://remsuperfinish.com/rem/isf_vs_friction.html

 http://www.microblueracing.com/

 Am I thinking way to out of the box here, but is an "Oil Free" Rotary a
 possibility?

 My best,
 Anthony J. Liberatore

 Why bother? What does it buy one?

 What this really is.... is a cost breakthrough.
 You can get 11,000 RPM with pressure fed plain bearings
 but that adds to the cost and will take some time
 to achieve in 100 HP rotaries for the LSA market.

 This is here and now and can be implemented by a
 number of small rotary engine makers on existing
 charge cooled rotor designs.

 Too bad Rotomax did not try it. They might still be here.
 I suggested it to them.

 Paul Lamar

 Paul,

 Can you imagine putting two of these engines on a Cri-Cri? Awesome!

 Mark

 2 one rotor engines or two 2 rotor engines? :)
 A 200 HP Cri Cri? :)

 http://www.cricri.zoomshare.com/

 Paul Lamar


 Two one-rotor Aixro engines for a total of 96 hp. The Cri Cri is so light
 it would perform like a fighter jet.

 Mark


 I owned two Cri Cri's several years ago. Flew them often. Hated the JPX
 engines, but
 nothing else worked. Second Cri Cri used limbach 275E motors, tuned to 20
 hp at 5600 rpm.
 Key issue was weight. Budgeted 15 pounds per engine, thirty total. The
 little rotary
 looks great, and 90+ hp would certainly make a rocket out of the tiny Cri
 Cri, but it is
 still very heavy for the plane.

 Lewis Bjork

 If you eliminate the heavy two engine mounting structure on the nose and
 mount a single AIXRO with Hirth gear box with the same thrust line I think
 you
 can get the engine weight in the ball park. If you use a Hirth gear box
 over 3:1 and ceramic rotor bearings you can run the AIXRO at 8000 or 9000
 RPM for take off so you can get over 55 HP. Here are a bunch of files so
 you can load into your 3D program to see what it would look like. Build
 it to plans except for the dual motor mount.

 Paul Lamar

 Paul,

A hangar neighbor has a Quickie Q-200 that needs reassembly, and a new
engine. I've been passing rotary info to him over the last 6 months. The
AE75R sounds like a good match to me. Some builders have installed
O-200's,
so this seems to be a better match. What do you estimate the fwf weight to
be for the AE75R?

Mark

The AIXRO two rotor weighs 75 pounds with Hirth Gear box
and the O-200 weighs about 200 pounds so I think he might have an aft
CG problem :) Nothing a longer motor mount and cowl would not handle.

I think the AIXRO is more real and obtainable then the Austro AE75R engine
product. Austro engines does not want to sell to individuals.

Paul Lamar

Paul,

I think his was set up for the Onan engine. They also run Rotax 447's and
503's. They claim the 503, with 50 hp, will easily reach airframe VNE. So,
the Aixro with 58 hp would be right in the ballpark, but would be much more
reliable.

Mark


Mark the Q-200 was set up for a o-200, the original Quickie was designed for the Onan. The Q-2 is a two person side by side version and considerably larger.
Bill Jepson