For Sale
Cepheus Alnair Motorglider
Greg Malm  email contact: 

( Adverse yaw? )
[Click on photo for large image]
This labor of love is your gain.  Buy this self-launch sailplane and enjoy soaring in micro-lift while using an engine for launching, low saves or returns to your home field after a day of soaring.

The motorglider is Kewanee, IL but is being moved to OSHKOSH area next week in a month or so.  
Adverse yaw:  If you are any kind of pilot, your first question has to be about the adverse yaw.  The good news is that the yaw is not a problem with proper taxi technique nor a problem with takeoff.  Once in the air, a bit of aileron and rudder is plenty to keep the sailplane tracking controlled and true.  The idea behind this approach was to minimize weight.  With engine at idle or off, there is no adverse yaw.

Flying details:
- Like most self-launch sailplanes, climb rate is low.  I have flown the plane for two flights since changing to this asymmetric engine situation.   First flight was to about 700 ft. in 5 minutes as I was reducing climb so as to maintain a higher speed (30 mph ... the aircraft probably would have stalled at about 23).  This higher speed provides an adequate safety margin.

- She is not at all bad handling with power .... but you do have to bring it up gradually on takeoff roll and hold full aft stick until the starboard/prop wing is flying ... then say in the next 150 ft. and with lessening aft stick pressure (your now down the runway about 400 ft.) you can feel full/good rudder authority on and you then with possible throttle finesse will have little trouble lifting the tail wheel full off and holding this until at perhaps 550

- The sailplane lifts off flat without rotating with complete control authority.  A little port rudder and also a little port aileron holds her straight.

- One can taxi at a brisk jog speed (as is proper on any taxi)

Other Details:
- Engine: 10 or 11 hp at 7500 rpm at present with a 5:1 reduction to the prop.  The reduction system is working flawlessly and it should be as I took many months to get it right.

- Self launching with a 62" folding two blade and the engine belt reduced

- Static thrust is 87 pounds. with the prop (ground adjustable) at a 37" pitch and engine rpm at 7250.

- Folding Propellor:  The prop folds when the engine is idled or stopped so in flight you throttle back and the prop will fold and trail with no significant drag experienced.  This is a feature I concentrated on so in-flight restarts would be very non-influential on the glider's performance if the engine is set to idle/start throttle settings.  When the engine is idling, one merely pushes the throttle open and centrifugal forces open the prop ... and away you go.  This system is working very well to date.

- Starting:  It is super easy to pull-starting each and every time as the engine has an after market NiMH battery-dependent, computer-retarded/advanced module.   The spark is always hot and consistent and even in 0 degree temperature conditions ... I'm talking the engine not warm at all ... with prime from the cockpit primer the engine will start on the first or second pull every time!
- Increased Horspower: The drive line is capable of considerably more engine should you desire it.  In fact should I keep the aircraft, I will double the hp 22 hp.

- Assembly: The plane is not difficult for two to assemble but with two will take about 1 hour if you are trailering.

- Trailer:   24 ft. open trailer set up to hold her well and have put probably 1000 miles on with her over the past 3 years.  It is a beautiful trailer and only needs some type of enclosure to make it a super ... she trails like a dream!


I am presently flying off the 40 hrs required by the FAA.   The FAA issued an air worthiness for the aircraft as an EXPERIMENTAL last November.

She is a very rugged ship and I have had much fun both building and flying her.


Greg Malm  email contact: 

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