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If your preference is for the classic or
antique look, but you’d also like some modern performance numbers, the
Renegade is ideal. If you think you would enjoy following rivers in an
open cockpit airplane and throwing yourself through an occasional loop
or roll, the Renegade should be perfect. If you want a rugged biplane
that goes together quickly, costs less than any other aerobatic biplane
kit out there, and that has proven itself in the hands of hundreds of
other builders, the Renegade is perfect. With a simple and conventional
control system, a beefy aluminum fuselage and wing structure, a strong
landing gear, and a leisurely 75-85 mph cruise, the Renegade line is
the perfect compromise of fun, thrift, thrills, and safety.
The Renegade Spirit
The Renegade can be purchased as plans
only or in a quick build kit form. It features the Rotax 582 engine,
and a smooth sided cowl. Weights for the Renegade Spirit run 420 to 520
pounds. Forward of the Spirit firewall there can be a Rotax 582 (65
hp.), or if you prefer four cycle, a Rotax 912 (80-100 hp.). The Spirit
also features the nostalgic look of the rounded bump cowling that made
antique aircraft like the Monocoupe famous. Depending on where you
live, both versions of the Renegade might qualify for ultralight
aircraft status.
Renegade Airframe
The structure of the Renegade is a blend
of old and new technology, it is a conventional strut and wire braced
biplane of fabric covered all metal construction. Under the Poly-Fiber
fabric you will find an aluminum truss fuselage that utilizes 6061-T6
aluminum tubing mated with a unique, custom designed extrusion. All
fuselage members are blind-riveted with AVEX and stainless steel
rivets. The larger diameter tubes provide a fuselage with very high
strength and rigidity while maintaining light weight. A fuselage of
equivalent strength and rigidity, but welded from 4130 steel would
weigh more than twice as much. Because the structure is a blind riveted
one, rather than welded, it is very easy for even an inexperienced
person to check for structural integrity and make any necessary
repairs. The use of square tubing wherever possible provides maximum
contact between riveted parts as well as increasing bending strength.
All quick build kits feature assembled
fuselage frames which are fabricated in precision jigs at the Murphy
factory. If you opt for a quick build kit you do not need special jigs
to build any Murphy design.
The tail assembly is wire braced for the
strongest possible structure with minimum weight. Doublers and crush
tubes are used at all wire attach points. The doublers are used to
increase bearing surface while the crush tubes allow the correct
tightening of bolts without over stressing the tube structure. The tail
group is made of aluminum tubes and channels that have an exceptionally
high strength to weight ratio. Assembly is a simple matter of laying
out the materials over full scale drawings that are provided for all
the flying surfaces.
 
Renegade Wings
The wings of the Renegade biplane are
the most impressive parts of the aircraft. Both wings are constant
chord NACA 23012 Aerofoil sections. Sweepback of 10 degrees on the
upper wing only. Dihedral of 3 degrees on lower wing. Angle of
incidence for both wings is 4 degrees. Front spars of rectangular 3
1/2" x 1 1/2" extruded 6061-T6 aluminum tubing; rear spars of C section
6061-T6 aluminum alloy; stamped aluminum ribs are used with an aluminum
sheet leading edge, giving smooth, firm shape to the wing. Durable
interplane "I" struts and stainless flying/landing wires provide
incredible strength and rigidity in the wings. Standard wing tips are
made from pre-formed aluminum tubes with fibreglass wing tips optional.
Wing area is 153.8 square feet, which can be expanded to 170.4 square
feet with optional wing tip extensions, for those countries requiring
lower wing loading.
Controls
 All
controls except for the rudder utilize push-pull tubes with rod end
bearings, which provides precise and immediate response to control
inputs. Rudder controls are standard aircraft quality stainless steel
cables. Ailerons are built similar to small wings. A "D" cell built up
from stamped ribs, pre-formed spar and leading edge provides a very
strong but light weight aileron. The ailerons are friese type and
differentially rigged which provide very crisp response with little
adverse yaw. Dual control sticks and rudder pedals are standard as are
heel brakes in the rear cockpit.
Landing Gear
The landing gear of the Renegade is
built to withstand a lot of abuse and rough handling. The shock cord
(bungee) suspension system is one of the best ways to take those tough
landings. The main struts of the aircraft landing gear are 6061-T6
square tubes with a wall thickness of 1/8". The drag struts are sleeved
full length for extra security. Safety cables in the slide tubes ensure
no major damage even in the event that a shock cord lets loose. In
keeping with our goal that the Renegade should be repairable with a
minimum quantity of tools and minimum skill level, the landing gear is
an all bolted sub-assembly. The tail wheel is steerable and full
swivel. High profile tires are available for providing extra prop
clearance if you prefer to make landings on river beds or in open
fields.
Accommodation
- Two people in tandem in open
cockpits.
- Wind screen for front cockpit and
head fairing behind rear cockpit.
- Baggage compartment with 25 lb.
capacity can be incorporated into the fuselage in front of the cockpit.
- All models are standard with dual
controls.
Aircraft Covering
The Poly-Fiber Aircraft Covering process
utilizes a heat shrink fabric which is extremely strong, yet
lightweight. There are a number of distinct advantages to using the
Polyfiber system:
- Extremely high bonding strength to
polyester filaments
- No dimensional change with aging
- No reduction in flexibility or
elasticity with aging
- Easy to repair damage
Polyfiber coatings and fabric chemicals
are extremely high quality and are ideally suited to this type of
fabric. Each type of chemical has a specific advantage and use in the
covering process:
- POLYTAK - high strength fabric cement
- POLYBRUSH - Fabric weave sealant
- POLYSPRAY - Blocks all UV radiation
from reaching the fabric or causing any deterioration
- POLYFIBER REDUCER - used to thin
covering chemicals
POLYTONE - Quality aircraft paint
Poly-Fiber fabric is provided with the Renegade kits along with a
complete covering and painting manual. By following outlined procedures
and using these products, a builder can finish with a beautiful
aircraft which will not need recovering for many years.
Power Plants
Murphy Aircraft’s standard engine
packages use the Rotax 582 (65 horsepower 2-stroke) engines and the
Rotax 4-stroke 912. This liquid cooled four cylinder, 4-stroke engine
produces 80-100 horsepower. We have chosen these engines for their
light weight, availability of parts and dependability. Rotax has been
the standard of the light plane industry for many years. On our 1987
tour of the United States, our factory aircraft was outfitted with the
Rotax 532 liquid cooled engine. By the end of the tour over 115 hours
of air time and 5300 air miles had been logged (many over rough
terrain). Our pilot reported that other than a few minor adjustments
the performance was flawless.
High Quality Construction Methods
When purchasing an airplane, one of the
most important things pilots are concerned with is the structural
integrity of the craft. They like to know that they are flying a strong
and safe machine they can trust. When comparing aircraft in this
regard, the tale is told by the materials and construction methods.
Murphy Aircraft Mfg. Ltd. is proud to
present one of the strongest and most structurally sound flying
machines on the market today. By using aircraft quality materials and
excellent fabrication methods, we have designed and built an aircraft
which surpasses anything of similar weight and characteristics.
For pricing details please contact the
Murphy Aircraft Manufacturing Sales Team at ... MurphySales@gmail.com .
 
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