Prime RES III 2m Glider & Electric F3L F5L
Description
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:
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:
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.
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 | |
| Dihedral (EDA) | TBA º | |
| 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 | 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 |
Reviews 1
Michael Fritz
UK
Prime TES lll F3L kit
I needed a different collet size for my Nan Explorer 3 that I got from Neil last fall. I was having trouble finding one stateside and I wanted to keep my assembly of the E3 moving, so I ordered one from HF. But since it seemed silly to order just a collet, I also ordered the Prime lll kit as Neil had a good price on it. Kit and collet arrived in Colorado on the 5th day after placing my order. I have built at least 10 different F3L and F5L kits in the past two years, so I've had pretty good exposure to some really excellent products, but this Prime kit is, in my opinion, one of the best I've seen so far. Wood selection, hardware, plans, and laser cutting are just excellent. The model has several unique assembly features that I find very clever. I've only just examined the kit contents, but I am looking forward to building and eventually flying this beautifully crafted model.
