3 x 42% SCALE RC GRUPP RV4 ARTF SPORTS / AEROBATIC MODELS DISPLAY - WOODSRING WINGS - 2019

Grupp 42% RV4
Wing span :114”
Weight : 19.3KG
Engine: DLE 120 , standard DLE cans
Prop : biela 25x12 3 blade
Spinner : 127mm (5”) fiber glass with white gel coat
Servos : savox HV
Radio : Jeti CB200 2x Rsats and cortex pro gyro . All setup and flown on Jeti DS24 TX
Battery’s packs : all opti power lipos 2x 5000mah 2s Rx pack, 1x 2150 2s ignition , 1x 1450 2s pack for lights
Lights : uni light system
Smoke pump : power box

The Van's RV-4 is an American light homebuilt aircraft supplied in kit form by Van's Aircraft of Aurora, Oregon. It seats two people in a tandem seating configuration with the pilot accommodated in the front seat. The Van's RV series has become the most popular kit-built aircraft in the world.

Top speed: 342 km/h
Wingspan: 7.01 m
Cruise speed: 323 km/h
Engine type: Reciprocating engine
First flight: August 1979
Unit cost: 37,000–73,000 USD (1980)

Richard VanGrunsven designed the RV-4 in the mid 1970s as a two-seat development of the single-seat RV-3. The RV-4 prototype first flew in August 1979.

The RV-4 is a new design based upon the concepts proven in the RV-3 and is not merely a stretched RV-3. The RV-4 airframe will accept a range of engines up to 180 hp (134 kW), including the Lycoming O-360. The RV-4 has a new wing, with increased wingspan and wing area over the RV-3. The RV-4 is designed for sport aerobatics.

The RV-4 has proven to be a capable cross country aircraft in service, able to carry two modest sized people and baggage on longer trips. RV-4s have been flown around the world, notably by an Australian, Jon Johanson, who completed world-girdling RV-4 flights on two occasions.

Many larger people find the RV-4 cockpit design physically constraining, and as a result VanGrunsven has designed an entire family of derivative designs. The RV-6 was designed to allow side-by-side seating, and the RV-8 was created as an enlarged aircraft that follows the RV-4's philosophy and offers tandem seating in a bigger aircraft.

Unlike most later RV series designs, RV-4 kits are only available with conventional landing gear, although some may have been constructed in tricycle configuration by builders. At least two RV-4s have also been built with retractable landing gear (mostly for the engineering challenge, as the performance gains were modest).

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FILMED AT THE WOODSPRING WINGS RC MODEL AIRCRAFT SHOW,
CLAVERHAM DROVE,
YATTON NR BRISTOL,
BS21 6TZ,
FILMED ON 13 /14 -7-2019,