Prime RES III 2m Glider & Electric F3L F5L

We are proud to stock the acclaimed Prime RES III, an advanced evolution of the Prime RES II. Designed for FAI F3L/F5L RES competitions, this high-performance model is available in both F3L glider and electric F5L configurations, with X-tail and V-tail options.

Optimized Design for Superior Flight Performance
The Prime RES III has been engineered for exceptional glide performance, stability, and control, making it ideal for both light thermals and strong winds. Its refined aerodynamic profile and lightweight construction reduce drag and improve efficiency, ensuring smooth and predictable flight behaviour.

Key Upgrades & Features:

• Elliptical wing design - Improves lift distribution, reduces drag, and enhances overall efficiency.
• Redesigned fuselage - Built-in firewall for motor installation with a lightweight, aerodynamic profile.
• Dual independent spoilers - Provide precise glide control for competitive flying.
• New carbon tailboom - Longer and lighter, increasing strength and responsiveness.
• Adjustable tow hook - Allows quick modifications in the field for optimal launch performance.
• Integrated ballast system - Enables in-field weight adjustments to adapt to changing wind conditions.

Precision Engineering & Quality Materials
Constructed with laser-cut balsa, aero-grade plywood, and carbon components, the Prime RES III is designed for maximum durability and lightweight efficiency. The fuselage is reinforced in key areas, ensuring strength without unnecessary weight.

The multi-segment elliptical wing enhances glide performance and handling, with dual spoilers that close securely using built-in magnets. A carbon main spar with Kevlar reinforcement ensures structural integrity, while the included CNC-cut styrofoam jig simplifies wing assembly for accurate alignment.

Comprehensive Kit for a Problem-free Build
Includes:

• Detailed color plan & step-by-step manual for a guided build process.
• CNC-cut styrofoam wing jig to ensure precise wing alignment.
• Laser-cut ribs and structural components for an effortless fit.
• Carbon tailboom, main spar & joiners (carbon & steel) for optimal weight and strength.
• Full hardware set including rudder horns, U-nuts, bolts, magnets, and Bowden cables.

Aerodynamic & Competition-Optimized Fuselage
The low-drag fuselage features reinforced key stress points while maintaining a lightweight structure. The adjustable tow hook allows quick in-field adjustments for optimal launch angles and improved climbing efficiency. The magnet-secured canopy hatch provides easy access to the electronics and ballast system, allowing fast modifications during competition. The integrated ballast system (119g max) lets pilots fine-tune the center of gravity without disassembling the model.

High-Efficiency Wing Construction
The multi-segment wing is designed for maximum lift with minimal drag, ensuring excellent stability and smooth flight control. The wing's carbon joiners and alignment pins ensure a secure and precise fit, while the Kevlar-reinforced carbon main spar provides additional strength.

Spoilers & Ballast: On-the-Spot Adjustments
Dual independent spoilers offer precise control and quick response during flight.
Integrated ballast system allows for rapid weight adjustments depending on flying conditions.
Steel ballast modules (90g) + steel joiner (29g) provide added stability when needed.

Note: This is a build-it-yourself kit and not an Almost Ready to Fly (ARF) model. Some assembly experience is recommended.

Prime RES III Specifications
Wing span	2.0 m	78 in
Wing area	35.0 dm2	543 sq in
Length	129 cm	50.9 in
Flying weight from	450 g	15.9 oz
Wing loading	12.9 g/dm2	4.2 oz/sq ft
Aspect ratio	11.3
Wing airfoil	AG24-26 Mod
Spinner Diameter	30 mm
Centre of Gravity	70-78 mm from wing leading edge
Controls	Rudder, elevator, spoilers

Prime RES III Glider Typical Weights
Bare structure	275 g	9.7 oz
Covering	95 g	3.4 oz
Total structure	370 g	13.1 oz
Receiver	6 g	0.2 oz
Rudder servo	5 g	0.2 oz
Elevator servo	5 g	0.2 oz
Spoiler servos (2)	10 g	0.4 oz
Battery	45 g	1.6 oz
Noseweight	9 g	0.3 oz
Flying weight from	450 g	15.9 oz

Recommended RC
Rudder & elevator servos	Blue Bird BMS-101DMG, Blue Bird BMS-101HV, KST X06, KST A08, KST X08, CHA DS06, CHA LV06, CHA HV06, Emax ES9052 Servo
Spoiler servos (2)	Blue Bird BMS-101DMG, Blue Bird BMS-101HV, KST X06, CHA DS06, CHA LV06, CHA HV06, EMAX ES9051
Receiver	4 or 5 channel receiver to match your transmitter
Battery (F3L version)	HyperFlight 300 mAh 4.8V NiMH, HyperFlight 700 mAh 4.8V NiMH, Bonka HV LiPo 1S 550mAh, Bonka LiPo 2S 300mAh, Bonka LiPo 2S 400mAh, 2S 300-600mAh LiPo

F5L Version Recommended Powertrains
Motor	DYS D2225-19, Vitaprop 8x4, Vitaprop 8x5
Motor	Hacker A10-7L 4.4:1, Vitaprop 12x8, GM 12x8
Motor	HyperFlight 1806 2450, CN 6x4
Motor	ArmSoar 1806 2450, CN 6x4
Motor	T Motor F60 Pro 1750, CN 9x7, GM 9x6
ESC	Dualsky SUMMIT 30 SLIM 6V, Dualsky SUMMIT 30 SLIM 8V
Battery (3S 300-600mAh LiPo)	Bonka LiPo 3S 300mAh, Radient LiPo 3S 450mAh, Bonka HV LiPo 3S 520mAh