BJ Craft Anthem SB (Sweepback Wing) ARF Airframe
Airframes are supplied to order and travel by freight or change hands at a contest. Send us your model, scheme and timing and we'll sort delivery with you.
Prices in AUD, GST included for Australian orders.
Tell us the scheme, drive and radio gear you want and we'll quote it as one package.
The BJ Craft Anthem SB is a 2-metre F3A pattern monoplane designed by BJ Park and built by BJ Craft, supplied almost ready to fly. SB stands for Sweepback Wing. Introduced in 2022, it is one of BJ Craft's most ordered designs. The 70-size version is the Anthem 70, and the Japanese-market version is sold as the Navigator.
The fuselage is set up with no side thrust, and one fuselage takes either a contra-rotating or a conventional nose. Supplied almost ready to fly, so the work left is fitting the radio and power system.
Specifications
- Wingspan: 1,900mm
- Length: 2,000mm
- Wing Area: 65 dm²
- Stabiliser Area: 18.5 dm²
- Spinner Diameter: 82mm
- Airframe Weight: 2,100 g (ARF)
- Nose: Contra-rotating or conventional, same fuselage, no side thrust
- CG: 280 to 320mm from the wing root leading edge. BJ Craft's prototype flew at 300mm.
Setting the CG
The CG range is wide, and BJ Park's advice is to run it as far aft as you can. Fly a 45-degree upline at 60 to 70 percent throttle and do a slow half roll without rudder. The right CG holds the 45-degree line with no heading drop.
RC System Requirements
- 6 channels, 5 servos & 1 ESC
- Aileron servos ×2, 6 kg or more
- Elevator servos ×2, 3 kg or more
- Rudder servo ×1, 4 kg or more
Suggested Setup
- Conventional nose: Precision Aero Products PCK F3A Drive
- Contra nose: Adverrun AVR XS V4 Contra Drive
- Servos: MKS HV747 ×3 for the ailerons and rudder, MKS HV69 ×2 for the elevators
- Battery: 2 × Precision Power F3A 5S 30C 5250mAh for 10S
Not sure which nose or drive suits you? Send us your setup and we will suggest one.
Airframe only. Radio, servos, drive system, ESC, propellers and battery sold separately.