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Auri Electric F5K 1.5m

Product Code: AURI-EL
 (1 review)

Price: $579.49

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The new Auri Electric F5K F5K is a high performance electric DLG type model for the nascent F5K class. The Auri Electric has the excellent performance and the gentle handling characteristics of the discus launched glider version. This model is based on the Auri DLG with the nose cut off, a nicely profiled firewall and a new fin but otherwise it is identical to the pure glider. The firewall (not fitted) is designed to be installed approx 12 mm back front the nose to allow rear mounted outrunners to be fitted. Alternatively a Electric DLG CNC Motor Mount (not included) can be used to very easily mount the motor.

The Auri is ideal for customers looking for 1.5m electric F3K type glider with good performance, nice handling and model toughness at reasonable cost. The fuselage is a one piece design with a generous front to facilitate fitting a small powertrain and all servos. 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 wing is beautifully molded from spread carbon with a Rohacell core to maximise strength and dimensional stability, ensuring the surface finish stays smooth. The design incorporates nicely designed ailerons to give excellent control at all speeds. The hinge gap is sealed with hinge tape, eliminating a common drag source and ensuring high launches.

The supplied accessories include a firewall, servo mount, tail pylon, aileron pushrods, rudder and elevator pull cables, torque springs, and all control horns. In order to balance the model without tail weight the nose will need to be kept light, with a lightweight 300-400mAh 2S LiPo and lightweight servos. The model is supplied with a servo tray for 4 pcs KST X08 servo but we think that 4 pcs KST X06 are more appropriate for this model.

Auri Electric F5K Specifications
Wing span 1.5 m 59 in
Wing area 20.0 dm2 310 sq in
Length 102 cm 40.2 in
Flying weight from 250 g 8.8 oz
Wing loading 12.5 g/dm 4.1 oz/sq ft
Aspect ratio 11.2
Wing airfoil LD series
Dihedral 6.0º
Spinner Diameter 25 mm
Centre of Gravity 63-65 mm from wing leading edge
Controls Rudder, elevator, ailerons, throttle

Recommended R/C
Elevator & rudder servos KST X06, KST X08, Blue Bird BMS-101DMG, Blue Bird BMS-101HV, Blue Bird BMS-A10H, MKS DS65K, MKS DS75K
Aileron servos KST X06, KST X08, Blue Bird BMS-101DMG, Blue Bird BMS-101HV, Blue Bird BMS-A10H, MKS DS65K, MKS DS75K
Receiver 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

Electronc 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:
VM 25mm Spinner for M5 shafts
CN 6x4 Folding prop blades
Electric DLG CNC Motor Mount
HyperFlight 30A BLHELI-32

Auri Electric F5K Typical Weights
Fuselage 36.5 g 1.3 oz
Wings (light SC) 92.0 g 3.2 oz
Fin 8.4 g 0.3 oz
Tailplane 5.1 g 0.2 oz
Accessories 8.0 g 0.3 oz
Total structure 150.0 g 5.3 oz
Wiring & glue 3.5 g 0.1 oz
Pushrods 4.5 g 0.2 oz
Receiver 5.0 g 0.2 oz
Rudder & elevator servos 13.0 g 0.5 oz
Aileron servos 13.0 g 0.5 oz
ESC 4.5 g 0.2 oz
Motor 20.5 g 0.7 oz
Prop & spinner 6.0 g 0.2 oz
Battery 30.0 g 1.1 oz
Flying weight 250.0 g 8.8 oz

Control Throws
Aileron 8 mm down, 8 mm up
Elevator 10 mm down, 6 mm up
Rudder 10 mm each way
Flap-fast cruise 0.5 mm up
Flap-thermal/slow cruise 0 mm
Flap-thermal 2-3 mm down
Flap-brakes 28 mm down

Reviews 1  

 Review by:

Fantastic model

This model has proved a very sound choice after my 'DLG shoulder' fell victim to arthritis. The accuracy & quality of construction is a massive improvement on that achieved by more traditional methods & the advanced airframe design offers tremendous advantages in performance & handling.
Certain assembly tasks can be quite demanding and fiddly & some of the detail does need careful thought and consideration. For example, although the (optional extra) metal engine mount is highly recommended & works well - watch out for overlong mounting bolts, they can cause trouble! Similarly, it is wise to use the supplied lead out sheathing where control runs pass through the fuselage but difficulty may be encountered when bonding these in position. A solution here is to sleeve the plastic tubing with close fitting heat shrink. Cyano will then readily bond these short lengths in place in the carefully formed slots in the carbon fibre fuselage.
As stated in the DLG version reviews, it is in the flying that this model really shines. The handling qualities inspire confidence almost immediately & the gliding performance is truly astonishing. I have been flying RC models for over 40 years & I can report this to be the very best of it's genre that I have ever flown. The recommended power train works well and represents a valid compromise versus the pure DLG version. I am mightily impressed & extremely pleased with this model.

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