CAP 10 For Sale



The airplane your are looking at, N15MR, is the Experimental Category version of the CAP 10.  The CAP 10 was based on Augusta Mudry’s adaptation of an airplane designed by Claud Piel called the Emeraude. (sometimes referred to as the CP103)  At the same time Augusta Mudry was modifying the Eneraude design into the CAP10, Claude Piel was also designing a fully aerobatic version of the Emeraude.  Claud Piel’s version would be called the Beryl 650.  Mudry and Piel’s designs were virtually identical with the exception of some cosmetic differences in the aircraft cowling and cosmetic contours in the tail section.  Because Mudry was able to capture the attention of French Aeronautics company Avions, his design reached production and became known as the Avions/Mudry CAP10.  Claude Piel never pursued production of his Beryl650 design and instead sold it as an Experimental category version.  The Claud Piel’s Beryl650 are the only CAP 10 type aircraft available in the Experimental category.  This is a tremendous advantage to those wanting CAP10 performance with the maintenance flexibility of an Experimental Category aircraft.    


Mike Russell is the builder of N15MR.  Mike is a mechanical engineer who designs power turbines for GE Power Systems.  Mike holds an A&P rating, is a FAA Certified Airframe Inspector (AI) and has three approved STC’s with the FAA.  Mike has built 6 complete planes in his lifetime.  He has built two Beryl / CAP 10’s and N15MR was his second CAP 10 as well as his 6th total plane.  All of Mike’s learning’s from building his first CAP10 and the 4 planes of other types are incorporated into this aircraft.  My A&P said has never seen such a finely built kit plane.

Mike Russell is arguably the most knowledgeable CAP 10 authority in the United States.  Mike lives in Albany New Your where the CAP 10 formation aerobatic team know as “The French Connection” was based.  Due to his skill as an aircraft builder, Mike began doing maintenance on the French Connection’s CAP10’s.  Over the years, other CAP owners in the United States, began to come to Mike for assistance with CAP10 maintenance issues.  Mike has seen and dealt with more CAP10 maintenance than just about any other person in the U.S. 

Unique Features

Because Mike had seen the strengths and weaknesses of the CAP 10 design over his years of maintaining them, he incorporated some improvements into N15MR.  The following is a list of improvements and their advantages.  (AVIONS, MANUFACTURER OF THE PRODUCTION CAP10 INCORPORATED ALL OF THESE CHANGES INTO THEIR DESIGN WHEN MODERNIZING THE CAP10b AIRCRAFT TO THE CAP 10c VERSION IN THE LATE 90’S.)

1)      Tappered Wing Blocks- Production CAP10 B’s had an AD on the main spars because Avions used square instead of tapered wing blocks on the aircraft.  These square wing blocks caused stress concentrations in the main spar which eventually resulted in cracking.  Avions changed this design in the CAP 232 by using a tapered wing block that alleviated the stress concentration problem thus avoiding the spar cracking issues.  Mike built N15MR using the tapered wing block design so there are no issues with spar cracking and no AD compliance issues.


2)      Strengthend Main Spar- based on his experience maintaining CAPS, Mike increased both the height and width of the main spar when building N15MR.  His affiliation with the French connection enabled him to have Avions of France use their stress analysis software to calculate the effect of these spar changes.   Avions software indicated that Mikes modifications yielded a 20% increase in spar strength over the production CAP 10B.  When Avions modernized the CAP 10 they also increased the main spar strength.


3)      Larger Alierons- After listening to the French Connection’s critiques of the CAP10 B’s , Mike increased the surface area of the ailerons to improve roll responsiveness.  Again, Avions would later incorporate this enhancement into the modernized CAP 10 C.  N15MR has a 320 degree per second roll rate, which outperforms the CAP 10 B and equals the peromance of the modernized CAP 10 C.


4)      Enhanced Rudder-   If you are familiar with the outstanding aerobatics performed by CAP10’s you’ll recognize the B models were regularly flown in knife edge flight.  While they were very capable, The French Connection indicated that more rudder authority make holding a precise knife edge less difficult.  Mike increased the vertical stabilizer and rudder area on N15MR and reports that is easily initiates and maintains knife edge flight.


5)     Steel Tube Fuselage- All production CAP 10’s, even the modernized C versions, have full wooden fuselages.  The expansion and contraction of the wooden fuselages caused constant maintenance issues with cable tensioning.  As the fuselages changed dimensions from moisture and torsional forces, the cable systems required regular tension adjustment.  N15MR DOES NOT have these problems because it has an all steel tube fuselage. Made of 4130 tubing, N15MR’s has the same tried and true construction that has served high performance aerobatic planes like the Pitts and Christen Eagles for decades.  As a result, N15MR’s fuselage is superior in strength and does not require special maintenance.



6)     American Parts- N15MR is built from all American parts, most of which were obtainable through Aircraft Spruce.  If you own a production version of the CAP 10 there are a number of difficulties involved in maintenance.  For your A&P to legally maintain the aircraft he must have the inspection and maintenance guidelines that were produced by the manufacture AVIONS.  Most of those documents were produced in French language with metric measurements.  This means that very few American A&P’s are equipped to service production CAP10 aircraft.  Second, the parts on the aircraft are French in origin and were often difficult to obtain or find substitutes for.  N15MR is made from American Parts and is an Experimental Category aircraft.  This is of tremendous benefit in terms of less procedural hassle and lower maintenance cost.


Airframe Condition- N15MR has very little aerobatic time on the airframe.  Mike Russell was 59 years old when he completed the plane.  The physical limitations of his age and his waning interest in aerobatics meant that Mike never subjected N15MR to highly stressful aerobatics.   Mike flew some local club events performing basic EAA style pattern maneuvers for score.  Mike has never been a show pilot, and didn’t have the physical stamina or personal interest to ever fly aggressive aerobatics or negative G maneuvers.  He said about 80% of his flight time in N15MR was strictly sightseeing and short trips.  The other 20% was basic low stress pattern style acrobatics. 


When I purchased N15MR from Mike, my intent was to learn aerobatics.  Unfortunately, issues with my relationship and finances prevented me from ever receiving aerobatic training.  The only aerobatic maneuvers I have ever flown in N15MR were during my demonstration flight with Mike during the buying process.  Since then, my flight time in N15MR has strictly been local sightseeing, non aerobatic flight. 


N15MR’s airframe still looks brand new.  This aircraft is in excellent condition.  You can feel 100% confident that N15MR will serve you as a safe aerobatic platform and an exceptionally responsive fun flying plane.


Avionics-  N15MR has a standard VFR array with a Garmin 250XL GPS/COM, Garmin GTX 320A solid state transponder, PS Engineering intercom, vacuum bypass to protect gyroscopic instruments from damage during aerobatic flight.


Controls- N15MR has dual stick yolks and dual throttle controls so it may be flown from the left seat by right or left handed pilots.  The right side yolk is collapsible for additional comfort during trips.  Flaps are manually actuated by an emergency brake style handle in the center console.



Performance & Statistics

Total Time On Airframe: 650 hrs

Total Time Since 1st Chrome Major: 650hrs

Engine: Lyco AEIO 360 Rated to 190 h.p. (Bendix Fuel Injection, Accra Line Inverted Fuel & Oil)

Instriments: Garmin 250XL GPS / COM, Garmin GTX 320A Transponder, PS Engineering Intercom.  Standard VFR Array with VACCUME BYPASS for gyros


 Empty Weight 1280lbs,

GSS Weight 1889 (Norm. Cat.)

Usefull Load: 609lbs, 

Usable Fuel 38g (2 tanks 20g front 20g rear)


75% Cruise: 135mph (with wheel pants off)

Vs0: 65mph,

Approach Speed 1st notch Flaps 75mph

Approach Speed Clean 85mph

Price: 68,000  CONTACT BRENNAN MONTY 662-645-7878

Brennan Monty,
Nov 2, 2010, 5:18 PM