Hyperflight Sokol Assembly Manual

Sokol Assembly Guide

from

HyperFlight

Drybank Farm Fosse Way Ettington Stratford-on-Avon Warwickshire UK CV37 7PD

HyperFlight.co.uk [email protected]

Revision 1.0

Sokol Assembly Guide 1.0.odt

HyperFlight Sokol Assembly Guide

Warning, this is not a toy!

If you are new to the hobby of flying RC model airplanes, DO NOT attempt to fly this model by yourself! There are hundreds of BMFA (British Model Flying Association) clubs in the UK. Ask your local hobby shop for the location of the nearest club in your area, or check out the www.bmfa.org.uk (or your national modelling organisations) web site. Many clubs often have qualified instructors to teach you how to fly. If you are an accomplished pilot then you should have no problem in flying this model. However the Supra-e can fly very fast, and is potentially a lethal object. Do fly responsibly, and make sure your third party liability (eg BMFA) insurance is valid.

Limit of Liability

All Vladimir’s Models products are constructed to the highest standard and made strong enough for reasonable usage by an experienced and responsible r/c aircraft pilot. By keeping this model you confirm that the parts have not been structurally damaged and are fit for purpose as received.

The craftsmanship, attention to detail, and actions of the builder/flyer of this model airplane kit will ultimately determine the airworthiness, flight performance, and the safety of the finished model. You confirm that you take full responsibility for the safe usage, construction, and maintenance of the model, and you will not hold HyperFlight.co.uk or its owners, staff, agents, contractors, or helpers in any way responsible for any damages or injury that may occur as a result of operating or flying this model. HyperFlight’s sole obligation shall be to replace those parts of the kit proven to be defective or missing. If you are not willing to agree to this binding condition of sale please return the model in as-received condition to Hyperflight for a refund.

Parts List

Wing (1 piece) Fuselage with push rod Tailplane - horizontal stabiliser Accessories bag

R/C Functions

Aileron Elevator Throttle

HyperFlight Sokol Assembly Guide

Sokol Specifications

Wing span 0.74 m 29.1 in

Wing area 7.1 dm2 110 sq in

Length 56 cm 22.2 in

Flying weight from

370 g 13.1 oz

Wing loading 52.1 g/dm 17.1 oz/sq ft

Aspect ratio 7.7

Wing airfoil MH32

Spinner Diameter

30 mm

Centre of Gravity

10-18 mm from wing leading edge

Controls Aileron, elevator

Sokol Typical Weights

Fuselage & fin 53 g 1.9 oz

Wings 75 g 2.6 oz

Tailplane 7 g 0.2 oz

Accessories 6 g 0.2 oz

Total structure 141 g 5.0 oz

Receiver 6 g 0.2 oz

Elevator servo 5 g 0.2 oz

Aileron servo 5 g 0.2 oz

Speed control 20 g 0.7 oz

Motor 76 g 2.7 oz

Prop & spinner

11 g 0.4 oz

Battery 101 g 3.6 oz

Glue etc 5 g 0.2 oz

Flying weight 370 g 13.1 oz

HyperFlight Sokol Assembly Guide

Recommended Control Throws & Mixes

Elevator 3 mm up, 2 mm down

Ailerons 3 mm up, 2.5 mm down

Recommended Servos

Elevator

Ripmax SD100, Dymond D47, MKS DS65K, Power HD DSM44

Ailerons (1 servo)

Ripmax SD100, Dymond D47, MKS DS65K, Power HD DSM44

Recommended Powertrains

Mild

20mm 30g KV 3000 outrunner, Graupner 4.7x4.7 or 6x3 folder, Hyperion 2S 900 mAh G3

LiPo, 15A ESC

Good

Mega 16/15/3, Graupner

4.7x4.7, Hyperion 3S 1100 mAh G3

LiPo, 30A ESC

Fast

Mega 16/15/2, APC

4.1x4.1, Hyperion 3S 1600 mAh G3

LiPo, 60A ESC

Mad

Mega 16/15/3, Graupner

4.7x4.7, 4S LiPo eg 2x, Hyperion

2S 1100 mAh G3 LiPo, 50A ESC

Fuselage

In necessary push the Bowden Cable outer tube though the hole in the rear of the fin, so only 1mm is showing. Glue this in place with a little medium CA (Super glue).

Glue the elevator horn in place using epoxy, preferably thickened with micro-balloons, and smoothed to make a fillet around the horn. Glue it about half way back on the elevator, to allow for movement, and to improve the geometry.

Bend an L shape in the wire push rod, and attach it to the horn as shown. No keeper is needed.

HyperFlight Sokol Assembly Guide

Make a mount for the elevator servo by sanding a curve in the bottom of a scrap piece of 1/8” (3mm) balsa. Epoxy this in position at the rear of the wing opening.

Epoxy the elevator servo in position. Clamp the elevator in neutral position, bend an L or Z shape in the wire push rod, to

align with the servo arm. If using an L bend use plastic keeper or a small tube to hold the wire in position. If using a Z bend fitting can be facilitated by drilling a hole in the fuselage side to unscrew the servo horn retaining screw.

Secure the front of the Bowden Cable (push rod outer) by gluing it to another piece of scrap balsa epoxied to the side of the fuselage.

Drill the mounting holes for the electric motor, and fit the motor and speed control. It is probably best to fit the receiver on top of, or behind the elevator servo. Tape the

two 2.4GHz antennas to the fuselage sides, one vertical and one horizontal, on the fuselage underside.

Glue some Velcro (hook & loop) tape to the underside of the fuselage to allow the the battery to be safely secured in position, do it does not move during flight. Before flying mark the battery position to achieve the correct centre of gravity.

HyperFlight Sokol Assembly Guide

Wing

Dry fit the aileron servo in the circular opening in the centre of the wing, to identify the optimum position. Check that the fuselage will not foul the servo. If all okay mark the servo position.

Make a mount for the aileron servo from a scrap piece of 1/8” (3mm) or 3/6” (5mm) balsa. Epoxy this in position, and then epoxy the servo to the mount. Make up short pushrods from 18 SWG or 20 SWG piano wire with L bends at the ends. Use keepers or small tubes to hold the pushrods in position.