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MAX Flight F5K 1.5m

Product Code: MAXFLIGHTF5K
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Price: $606.92

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Description

The MaxFlight F5K is an innovative 1.5m electric DLG type glider with two piece wings. With great performance and forgiving flight characteristics this may be the most advanced F5K model we have seen so far.

The outstanding benefits of this model are:
  • Well thought out design intended for electric flight from the outset - not a modified discus launch glider.
  • Excellent glide performance and good speed range.
  • Lightweight carbon all molded construction.
  • Superb surface finish and attractive colour schemes.
  • Two piece wing and easy to dismount the fin and tailplane make for a very easy to transport model in a box just 86 cm (34") long.
  • Large canopy hatch for east access to the motor, ESC and battery.
  • Available in 4 servo (flaperon) and 6 servo (aileron and separate flap) versions.
  • Preinstalled mounting system for 4 KST X08 tail and wing servos under the wing.
  • Large under-wing hatch for access to the fuselage servos.
  • Easy and quick assembly at the field.
The wing is beautifully molded from spread carbon with a Rohacell core to maximise strength and dimensional stability, ensuring the surface finish stays smooth. The wing is available in two versions:

Flaperons - a single control surface on each wing, actuated from fuselage mounted servos, is used both for roll (aileron) and flap/camber, as used successfully on DLGs. This has the advantage of simplicity and not needing any wing mounted servos, reducing the cost. Also only a 5+ channel receiver is required and transmitter programming is simplified.

Separate Ailerons and Flaps - two control surfaces on each wing. The inner flap control surface is actuated from fuselage mounted servos, and the outer aileron control surface is mounted by an outboard servo. This has the advantage allowing much greater flap deflection during landing, giving better control and slower touchdowns - potentially allowing the model to be flown from a smaller field. A 7+ channel receiver will be required and transmitter programming is a little more complex.

The fuselage is a one piece design with a generous front to facilitate fitting a small powertrain and four servos. A firewall is supplied but not fitted, to allow it to be recessed as appropriate for the motor used. The tailplane (horizontal stabiliser) and fin (vertical stab) are very light and have a good finish. The rudder and elevator are ready hinged and give good control response.

The fuselage is supplied with a servo deck pre-cut for 4 pcs KST X08 servos. The supplied accessories include a firewall, servo mount, all pushrods, rudder and elevator pull cables, torque springs, and all control horns. The wings are supplied in thin foam bags but fit nicely in our DLG F3K Wing Bags for greater protection.


MaxFlight F5K Specifications
Wing span 1.5 m 59 in
Wing area 18.8 dm2 291 sq in
Length inc spinner 87 cm 34.3 in
Flying weight from 270 g 9.5 oz
Wing loading 14.4 g/dm 4.7 oz/sq ft
Aspect ratio 12.0
Wing airfoil Special 7%
EDA (dihedral) 6.0º
Spinner Diameter 25 mm
Centre of Gravity 61-65 mm from wing leading edge
Controls (4 servo version) Rudder, elevator, ailerons, throttle
Controls (6 servo version) Rudder, elevator, ailerons, flaps, throttle


Recommended R/C
Elevator & rudder servos KST X08H, Blue Bird BMS-A10V
Flap/Flaperon servos KST X08H, Blue Bird BMS-A10V
Aileron servos (6 servo version) KST X06H, Ripmax SD100
Receiver (4 servo version) 5 channel rx to suit your transmitter, eg Spectrum AR6610T, Orange DSM2 compatible, Jeti Duplex R5, Multiplex Mlink RX-6 Light & RX-5 Light
Battery (2S 300 - 450 mAh LiPo) Nanotech 2S 300 mAh, Radient 2S 430 mAh


Electric Powertrain Recommendations
ADH300S / MM1906-2400 Rear Mount 2S 450mAh LiPo, 6x4 folding prop
LDARC XT1806 2S 450mAh LiPo, 6x3, 6x4 folding prop
F5K/Snipe 2e Powerset 2S 450mAh LiPo, supplied 6x3 folding prop
F5K/Snipe 2e Pro Powerset 2S 450mAh LiPo, supplied 6x4 folding prop
XPower F2307/14 2S 450mAh LiPo, 6x4 folding prop


Electronic Speed Controls (ESC) Recommendations
Hyperflight 11A BLHELI-32 11A, no BEC, use HV/WV servos
Quanum BLHeli32 20A 20A, 3A BEC, good
Sunrise 20A Pro 20A, 3A BEC, a bit too big
HyperFlight 30A BLHELI-32 30A, 2A BEC, plug ready fitted

The powertrain used in the photos gave closely folding prop blades to minimise drag. The items used were as below, however a VM Powerset will also work well.
LDARC XT1806
VM 25mm Spinner for M5 shafts
CN 6x4 folding prop blades
HyperFlight 30A BLHELI-32


MaxFlight F5J 6 Servo Control Throws
Rudder 12 mm each way
Elevator 8 mm up / 6 mm down
Ailerons 8 mm up / 5 mm down
Flaps (roll) Flaps follow ailerons
Flaps (landing) 40 mm down (6 mm down elevator with full flap)
Camber Settings
Speed Flaps 2 mm up, ailerons follow flaps
Cruise 0 mm
Thermal Flaps 4 mm down, ailerons follow flaps


MaxFlight F5J 4 Servo Control Throws
Rudder 12 mm each way
Elevator 8 mm up / 6 mm down
Ailerons 11 mm up / 7 mm down (at wing root)
Ailerons (landing) 25 mm down (4 mm down elevator with full flap)
Camber Settings
Speed Ailerons 2 mm up
Cruise 0 mm
Thermal Ailerons 4 mm down


MaxFlight F5K Typical Weights - 4 servo version
Fuselage 36 g 1.3 oz
Wings 97 g 3.4 oz
Tailplane 10 g 0.4 oz
Fin 7 g 0.2 oz
Wing joiner 10 g 0.4 oz
Accessories & glue 10 g 0.4 oz
Total structure 170 g 6.0 oz
Receiver 6 g 0.2 oz
Rudder servo 8 g 0.3 oz
Elevator servo 8 g 0.3 oz
Wing servos (2) 17 g 0.6 oz
ESC 5 g 0.2 oz
Motor 20 g 0.7 oz
Prop & spinner 6 g 0.2 oz
Battery 30 g 1.1 oz
Flying weight 270 g 9.5 oz


(C) 2021 Neil Stainton

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HyperFlight
Drybank Farm
Fosse Way, Ettington
Stratford-upon-Avon
Warwickshire, CV37 7PD
United Kingdom
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sales@hyperflight.co.uk
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