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Sport Aircraft (32)plans Karatoo J-6 Ultra Light & Lsa 24x18" Cr 85mph Cost $400 on 2040-parts.com

US $149.00
Location:

Prescott Valley, Arizona, United States

Prescott Valley, Arizona, United States
THERE ARE SOME SLIGHT TEARS ON EDGES. The pages are different sizes, depending on the subject.
Warranty:No Country/Region of Manufacture:United States

This auction is for a complete set of 32 Blue prints for the  KARATOO J6 2 PLACE AIRCRAFT. They are in like new condition and have never been used. These plans were produced by "COUNTRY AIR INC.", Henderson, NC. COST $400
The Anglin J6 Karatoo is an Australian ultralight and light-sport aircraft that was designed by Jessie Anglin and introduced in 1982. Over the years the J6 has been produced by several different manufacturers, including Amax Engineering of Donvale, VictoriaSkyway Aircraft and is currently built by Serenity Aviation of Australia. The aircraft is supplied as plans or as a kit for amateur construction.

The aircraft features a strut-braced high-wing, a two-seats-in-side-by-side configuration enclosed cockpit with doors, fixed conventional landing gear and a single engine in tractor configuration.[4]

The aircraft fuselage is made from welded 4130 steel tubing, with its wings usually made with a wooden structure, all covered in doped aircraft fabric. Its 32.5 ft (9.9 m) span wing employs a Clark Y airfoil, has an area of 146 sq ft (13.6 m2) and optional flaps. The wing is supported by V-struts and jury struts and is constructed with marine plywood ribs and a D-cell leading edge, although a metal wing was under development. Wing folding for ground transport or storage is optional. Floats for water operations are an option.[4][5][7][8]

The Karatoo can accept engines in the range of 50 to 100 hp (37 to 75 kW), depending on the model. Engines used include the 50 hp (37 kW) Rotax 503 and the 64 hp (48 kW) Rotax 582 two-strokes as well as the 80 hp (60 kW) Rotax 912UL, the 100 hp (75 kW) Rotax 912ULS, 85 hp (63 kW) Jabiru 2200, 71 to 100 hp (53 to 75 kW) Subaru EA engine, 90 hp (67 kW) Continental C-90 and the 100 hp (75 kW) Continental O-200A four-stroke powerplants.[4][7][8]

In 1988 the J6 design was adapted to the Canadian ultralight rules as the Norman Aviation J6 Karatoo and, in 1990, as the Buzzman L'il Buzzard.

In August 2012 there were 14 J6 Karatoos registered in the United States with the Federal Aviation Administration in the Experimental - Amateur Built and light-sport categories

Variants[edit]

J6A Karatoo
Initial model with a gross weight of 900 lb (410 kg), commonly powered by a 50 hp (37 kW) Rotax 503. The earliest versions had a solid spruce main spar and later a spruce I beam spar.[7]
J6B Australian Karatoo
Improved model developed by Anglin in conjunction with Max Peters. The J6B has a gross weight of 1,200 lb (540 kg), strengthened landing gear, optional flaps and initially used a 71 to 100 hp (53 to 75 kW)Subaru EA engine automotive conversion powerplant.[7][8]
J6C Australian Karatoo
Model with a gross weight of 1,200 lb (540 kg), a longer and wider fuselage, with a revised rear fuselage structure.[7][8]

Specifications (Serenity J6B Australian Karatoo)[edit]

Data from Serenity Aviation[8]

General characteristics

  • Crew: one
  • Capacity: one passenger
  • Length: 20 ft 0 in (6.10 m) including propeller and spinner
  • Wingspan: 32 ft 6 in (9.91 m)
  • Height: 6 ft 10 in (2.08 m)
  • Wing area: 146 sq ft (13.6 m2)
  • Empty weight: 580 lb (263 kg)
  • Gross weight: 1,200 lb (544 kg)
  • Fuel capacity: 52 litres (11 imp gal; 14 US gal)
  • Powerplant: 1 × Continental C-90 four cylinder, air-cooled, four stroke aircraft engine, 90 hp (67 kW)
  • Propellers: 2-bladed wooden

Performance

  • Maximum speed: 110 kn (127 mph; 204 km/h)
  • Cruise speed: 80 kn (92 mph; 148 km/h)
  • Stall speed: 40 kn (46 mph; 74 km/h) flaps down
  • Never exceed speed: 120 kn (138 mph; 222 km/h)
  • Rate of climb: 500 ft/min (2.5 m/s)
  • Wing loading: 8.2 lb/sq ft (40 kg/m2)
  • The following story and images have kindly been contributed by Len Neale - inaugural member and current Vice President of the Callide-Dawson Flying Group.

    J6 Karatoo 19-4396  "Spirit of Smoky Creek" 

     

    The J6 Karatoo was originally designed by Jesse Anglin in the USA and it was his intention to combine in the aircraft the best features of a Piper J3 Cub with the practicality and visibility of the side-by-side Aeronca Chief. Indeed many of the construction features and components reflect their Aeronca inspiration, thus producing one of the most practical and forgiving sport aircraft ever designed.

    The proven combination of steel tube fuselage and wooden wing provides traditional strength and reliability. Ask anyone who has flown a properly rigged Karatoo and they will tell you it is one of the most delightful aircraft they have ever flown.

    Being of American design, the wing aerofoil is classic "Clark Y" with a span of 32 feet and a chord of 4 foot 6 inches. The overall length of the fuselage is 20 feet. The empty weight of my aircraft is just over 300 Kg. 

    Early Australian versions of the aircraft were built from kits manufactured in the late 1980's by Max Peters' "Australian Aviation Works" in collaboration with Jesse Anglin. Quite a few kits were sold.

    They departed slightly from the original design in that the upper rear fuselage shape was a straight line rather than the original curved turtle deck, giving it a more "boxy" appearance. Some were powered by Subaru EA81 converted car engines with an "AMAX" belt reduction drive attached.

    Martin Hone was the first in Australia to install an 80 hp Rotax 912, which in 1994 produced a beautifully reliable aeroplane which still flies today. 

    I decided to scratch build from plans, sourcing my own materials, while going back to the original Jesse Anglin design with the prettier slightly curved "Cub like" turtle deck. I elected to install a 4 cylinder 2.2 litre, 80 hp Jabiru engine, which so far as I know had never been done in a Karatoo before. It meant that I had to design and build my own engine mount, which under the 19 "amateur built" category is permissible.

    I considered the Jabiru engine's light weight and simplicity of installation as valuable features. I anticipated and overcame any engine cooling issues, (because of the Karatoo's lower cruise speed compared to a Jabiru), by installing larger intake and exit airways, enhanced air duct baffling and by installing a larger capacity oil cooler.

    The engine cowl was modified from one supplied by Jabiru, that was originally designed around putting a Jabiru engine in a Lightwing. The paint trim pattern was derived from a most recent example of a Piper Super Cub. 

    During initial solo testing I had tried a standard Jabiru wooden propeller. Although this delivered up to 90 Kts cruise speed it would not have given sufficient safe climb performance for two people.

    I opted instead for a "Petroney" ground adjustable composite propeller, which with optimum pitch settings provides the best balance of climb and cruise performance for the aircraft. It can now safely lift two 100 Kg people and half fuel off the ground and climb at 500+ feet per minute and still cruises at an honest 75 Kts on 2,700 RPM. It's no speed demon, but provides relaxed and comfortable sport flying.

    The full 80 litres of fuel, (40 a side in the wings), at 15 Lt/hr gives five hours endurance, way past sore backside time. Two up it stalls at 38 Kts, one up at 35. Stalls are smooth and predictable at any power setting, with no wing drop. 

    I have been very pleased with the end result, and for over seven years have flown an attractive and beautifully balanced aeroplane. I believe with the Jabiru engine I have struck the optimum combination of power, weight and balance, which coupled with features like the differential "frieze" ailerons, provides for enjoyable and safe "seat of the pants" flying. The aircraft requires no "in cockpit" elevator trim, relying solely on good rigging and application of power to provide balanced flight.

    At cruise on a calm day the aircraft quite happily flies fully "hands off". Like any "real" aeroplane, it also loves a balanced input of rudder to help it in its turns. For anyone considering building a Karatoo, attention to correct rigging is very important. I have heard of examples where excessive wing incidence has produced "sluggish" performance. Any more that two degrees positive incidence on the wing chord line relative to the fuselage datum line is too much. 

    The name "Karatoo" I believe arose from the evolution in design to two seats, from the Jesse Anglin single seat "Karaone". The title of this example "Spirit of Smoky Creek" is dedicated to the airfield where it was assembled and is hangared, and to the many people who have encouraged me and assisted in its construction.

    1. Steel Tube Frame and Fitments
    2. Wood Wing Frame
    3. Design and Build Engine Mount
    4. Rig and Fit Wings to Fuselage
    5. Tanks, Struts and Instrument Panel
    6. Wing Fabric Covering and Stitching
    7. Fuselage Covering and Painting
    8. Fuselage Trim Paint and Windows
    9. Instruments, Weight and Balance
  • 10. Testing and Flying
















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