100" Bighorn ARF - yellow 2.54m

The large aerobatic high-wing 100" Bighorn proves that even a well-powered high-wing of classic all-balsa construction with large rudders and flaps can be just as fun as "ordinary" 3D aerobatic models. In addition, its design allows the installation of a 50-70 cc gasoline engine as well as a 5-6 kW brushless electric motor with 12S LiPo, so both fans of "freaks" and "electricians" will find something to their liking. If you like what various "Fun" Pipers do in the air, but you like something bigger, which no one, but really no one, can miss in the sky, the "hundred-inch" Bighorn is definitely a good choice.

Fuselage: The fuselage of the model is a classic construction of plywood and balsa laser-cut parts reinforced with Kevlar® and carbon with a removable laminate engine cover and a removable upper fuselage with a cabin for perfect access to the propulsion system and RC equipment. The engine is mounted in the rear mount on a plywood box bed.

Wing: Two-piece wing with semi-symmetrical profile (halves slide from the side onto a carbon tube connector and secure with screws) is also a classic design with all-balsa rigid skin. Large-area ailerons and flaps are controlled by 2 pairs of servos.

Tail surfaces: The tail surfaces are lightweight all-balsa construction, the VOP is two-piece with the stabilizer halves fitted onto a carbon tube. The elevator halves are controlled by servos mounted in the horizontal stabilizer with short straight rods. The rudder is controlled by a cable drive.

Chassis: The chassis is of the spur type with carbon main legs, balloon wheels and a duralumin spur coupled to the rudder.

Cover: The entire model is covered with ULTRACOTE® iron-on transfer film (this is the trademark used in the USA for the well-known Oracover® films).

RC equipment: To fully exploit the model's potential, you should use at least a seven-channel or preferably a nine-channel computerized RC kit allowing independent control and mixing of ailerons and flaps as well as elevator servos. For rudder control you will need 7-8 standard size servos with 20-40 kg.cm of thrust - for wild 3D flying you should use fast servos at the upper end of this range.

Motor: When choosing a drive, you have a wide range of options - for example:

• A training sports "love" model: a 35-40 cc petrol engine such as a GP 38, NGH GT35, etc., which will work well with a 19-20" propeller.
• A nimble "petrol engine": a 50-55 cc petrol engine that will spin a 22" propeller.
• Brutal 3D "petrol engine": 60-70 cc petrol engine such as GP61, NGH GT65, etc. with 23-24" propeller.
• Fast "electric": 5 kW brushless electric motor such as the KAVAN PRO PRO 8050-195 with a 21x10" propeller, 120-160 A controller and 12S LiPo 4-6000 mAh.
• Brutal 3D "electric": 6 kW brushless electric motor such as KAVAN PRO PRO 8055-190 with 22x10" propeller, 150-160 A controller and 12S LiPo 4-6000 mAh.

The kit includes: iron-on foil-coated fuselage, wing and tail surfaces, sprayed laminate engine cover, accessory set, carbon chassis, duralumin spur, wheels and instructions.