Prime Q 2m Glider & Electric F3L F5L

Prime Q Gliders only received so far. Electric versions expected early February.

Introducing the Prime Q, a new high-end RES F3L competition model from CLM Pro. Following the success of the Prime III series in both F3L and F5L versions, CLM Pro has taken several steps forward to develop a superior, next-generation RES model – Prime Q. Representing the latest in model design from the well-known manufacturer CLM Pro, the Prime Q is engineered for peak performance in FAI RES F3L competitions.

The design and development of the Prime Q were once again led by the well-known designer Danko Prprovic, who is also responsible for the previous Prime models. His expertise and innovative approach have been instrumental in shaping the Prime series into one of the most recognized and respected lines of RES competition models.

Optimized Performance Through Innovation
The Prime Q is the result of years of research and intensive field testing. It was designed to be a true high-end, all-round model capable of delivering excellent performance in all weather conditions, in full compliance with the FAI RES F3L rule set.

At the heart of the Prime Q is a completely new airfoil, designated DP699 – DP711. Developed over the past three years in close collaboration with a university aerodynamic lab equipped with a wind tunnel, the airfoil is the result of exhaustive testing and optimization of multiple polar curves to find the ideal aerodynamic balance.

The model has been flight-tested across the full spectrum of weather – from dead calm to extreme wind conditions up to 12 m/s – and has proven itself to be a winning design. Over the past year, it has been extensively tested by our Prime Team in competitions all across Europe, consistently proving its quality by achieving podium finishes.

Where the Prime Q truly excels is in its ability to respond to the smallest thermal signals. Even a tiny bubble of lift is enough – the model hooks in effortlessly and climbs smoothly. It's remarkably sensitive to thermals and practically wants to go up.

With the Prime Q, CLM Pro sets a new benchmark in the RES category – precision engineering, competitive performance, and thoughtful design for builders and pilots alike.

Whether you're training, competing, or simply chasing thermals on a Sunday morning, the Prime Q offers an unmatched combination of performance, handling, and build quality.

Key Specifications:
Wingspan: 1992 mm / 78.43"
Length: 1398 mm / 55.03"
Wing area: 37 dm² / 542 sq. in.
RTF weight: from 470 g / 16.60 oz
Controls: Rudder, elevator, spoiler

PRIME Q – Feature Highlights:
- High-performance all-rounder for all weather conditions
- Larger root chord and elliptical wing shape, inspired by Prime III
- Bigger, perforated spoilers for enhanced braking efficiency
- Expanded wing area – 37 dm²
- New airfoil: DP699 - DP771
- Designed specifically for RES class
- Improved glide ratio and energy retention
- Better wind penetration
- Higher launch height than Prime III
- Ballast system in fuselage (as in Prime III), but upgraded:
- Quick-release ballast hatch (no screws – swap in 1 seconds)
- Available in both X-tail and V-tail configurations
- Easier and more precise build process:
- Assembly on a laser-engraved jig – no more Styrofoam templates
- Uses a 3 mm laser-cut plywood jig for higher precision and repeatability
- Full-size 1:1 building plans included
- Building Instruction manual PDF - 110 full-color pages with photo guidance

Kit includes:
- detailed drawing in color
- detailed building manual with step-by-step images
- laser cut jig from pylwood for easier wing glueing
- laser cut ribs and all other required parts
- templates for gluing the first ribs at angles
- carbon tailboom
- carbon tube for mainspar
- set of ballast with a total weight of 90 gr. + 29 gr steel joiner
- carbon wing joiner
- steel wing joiner for more ballast
- adjustable tow hook, including all necessary parts
- rudder horns, u-nuts and various bolts for mounting
- various magnets for the canopy and spoiler
- bowdens and controls for connecting moving surfaces
- other carbon small parts and accessories

Wing Design and Construction
For improved stability, the wing has been designed in multiple segments. It is built in two main parts that connect to the fuselage at the center. The wing features a central panel with a dihedral angle, while both the mid panels and the tip panels are also angled. Each segment—tip, mid, and center—has its own angle, including the two halves that join the fuselage, resulting in excellent flight balance.

The wing maintains an elliptical shape throughout its entire span, giving the model outstanding stability and smooth, easy handling in all flight conditions. The two wing halves are joined with precision carbon joiners, or steel joiners when ballast is needed. Pre-fitted pins ensure that all parts align perfectly during assembly.

To further strengthen the connection and optimize load transfer from the mid panels to the center panel, the kit includes a specially angled carbon joiner. A carbon tube is also provided as the main spar, reinforced with Kevlar at the joints where the wing segments connect. For easier assembly, a laser-cut plywood jig is included, allowing precise alignment during gluing.

The main wing structure is built with full balsa ribs and a pre-shaped balsa trailing edge, with reinforcements in critical areas. Composite materials are used for the leading edge and main spar, all in accordance with FAI F3 RES rules. Every part is laser-cut for a precise fit, requiring minimal finishing – you only need to assemble and bond the parts following the manual.

The center panel is equipped with two separate spoilers, each featuring built-in magnets that ensure they close perfectly flush when not in use.

Download the 110 page build manuals by clicking on thse links:
Prime Q X Tail Build Manual
Prime Q V Tail Build Manual

Recmmended equipment (glider)
Rudder / Elevator Servos: KST 08, CHA DS09, EMAX ES08MA II
Spoiler Servos: KST X06H V6, EMAX ES9051, CHA DS06
Battery Options: Li-ion 1S / 2600 mAh; 2S LiPo 300–850 mAh; NiMh 300–700 mAh
Receiver: 4- or 5-channel receiver compatible with your transmitter

Prime Q Control Movements:
Rudder: 20 mm each way, expo 10–20%
Elevator: 14 mm each way, expo 10–20%
Spoiler: 80° up
Center of gravity: 82-84 mm from wing leading edge