Vaiana Sport F3-RES & F5-RES 2m

No more expected till late Autumn.

The Vaiana Sport F3-RES is a modern high performance F3-RES model from Slovakia. With attractive elliptical flying surfaces and a very long tailboom it flies as beautifully as it looks, and it won several F3-RES events in 2021. This latest version of the model uses Mitsuru Ishii's highly rated 0801YA mod biconvex airfoil which provides better performance than the Drela airfoil used on the previous version, being optimised both for high speed launch and min sink. One of the outstanding benefits of the Vaiana Sport is the inclusion of 3D printed ballast boxes that are built into the wing root, and several ballast slugs and spacers that allow up to 170 g of ballast to be added, ensuring that it can outfly the competition, even in windy conditions.

The Vaiana Sport is made from very accurately CNC and laser cut balsa with lightweight wound tubular carbon booms for the main spar and tailboom, giving excellent strength and light weight.

The balsa and ply parts are cleanly laser and CNC cut. The fuselage consists of a wooden (plywood/balsa) pod and a light weight tapered carbon tailboom with a balsa tailplane mount. The built-up balsa fin is fixed to the tailboom and the tailplane is removable. The two piece wing is connected to the fuselage using a through joiner. This makes for fast and easy assembly at the field as the wing is retained by magnets - there is nothing to screw. The wing main spar is a tapered carbon tube, which provides excellent strength and very light weight. The model is being constantly developed and improved and the wing currently has three riblets between each full rib to ensure the covering material follows the airfoil contour super accurately – not one riblet as shown in some of the photos. There are two large spoilers for safely exiting thermals and precise landings.

The Vaiana Sport is supplied with a clear full size plan and has straight-forward construction. However please note that no manual or online build log is available so it is not suitable for beginners. The kit contents include all the necessary parts to build this model and includes several 3D printed parts to speed up the build process. The well selected balsa and ply parts are cleanly cut and the wound carbon spars are light and of high quality. All the control linkage parts and small accessories are included.

This model is one of the top F3-RES kits for 2021/22 and is highly recommended. It is also known as the Viana but the correct name is Vaiana Sport.

Manufacturer's electric setup
The engine used is the XM2225EG-23 (1600KV) propeller 8/4 Aero cam, 20 A regulator and 2S 450mAh LiPo. Consumption is about 14A and the 480g model climbs at 7m / s. The servos in the electric versions are in the center of gravity in the middle of the fuselage, the front is only the battery, ESC and receiver.

(C) 2021 Neil Stainton

Vaiana Sport F3-RES Specifications
Wing span	2.0 m	78 in
Wing area	36.0 dm2	558 sq in
Length	134 cm	52.9 in
Flying weight from	450 g	15.9 oz
Wing loading	12.5 g/dm2	4.1 oz/sq ft
Aspect ratio	11.0
Wing airfoil	AY (Mitsuru Ishii) 0801YA mod
Dihedral (EDA)	9.0º
Spinner Diameter (electric ver)	32 mm
Centre of Gravity	93-96 mm from wing leading edge
Controls	Rudder, elevator, spoilers

Recommended RC
Rudder & elevator servos	Blue Bird BMS-101DMG, Blue Bird BMS-101HV, Blue Bird BMS-A10H, KST X06, Graupner DES 427, ES08
Spoiler servos (2)	Blue Bird BMS-101DMG, Blue Bird BMS-101HV, KST X06, Graupner DES 427, ES08
Receiver	4 or 5 channel receiver to match your transmitter
Battery	Radient 1S 700 mAh LiPo, Dream-Flight 300 mAh 4.8V NiMH, HyperFlight 650 mAh 4.8V NiMH, Dream-Flight 700 mAh 4.8V NiMH, 1S 2600 mAh Li-Ion, 2S 300-600mAh LiPo

Control Throws
Rudder	22 mm each way
Elevator	12 mm up & down
Spoilers	80º - 90º up
Hook location	10 mm from front of cut-out

Vaiana Sport F3-RES Typical Weights
Bare structure	320 g	11.3 oz
Covering	50 g	1.8 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	54 g	1.9 oz
Flying weight	450 g	15.9 oz