Tempest 2.75m

The Tempest is a 2.75m fast high energy slope soarer designed to excel in UK conditions by Jonathan Wells. The Tempest is the latest model from TJI RC and is built to high standards, with an excellent finish and a bullet proof strength.

The T tail model has a great speed range and excels in high energy conditions. Unballasted it weighs approx 2.4Kg and can be ballasted up to 4.1Kg using the rectangular pockets built into the wing roots.

The model is available in glass skin and all carbon layups, with the latter recommended for the top performance and strength.

The accessory pack contains all the control linkages and ply servo trays for the wing servos. The linkage hardware for the T tail elevator linkage is included but no construction info is currently available.

Aileron & flap bays: 55mm x 46mm, for 10mm thick servo
Elevator fin bay: 38mm x 41mm for srvo up to 12mm thick
Rudder servo forward tray hole size: 25.5mm x 12mm
Wing Joiner: 36mm x 12mm x 375mm total length
Wing Ballast holes: 2x 10.5mm x 20.6mm x 249mm
T tail mounting bolts: M4 x 25mm countersink

Lots more info on this RCGroups Tempest thread.

Tempest Specifications
Wing span	2.75 m	108 in
Wing area	50.0 dm2	775 sq in
Length	140 cm	54.9 in
Flying weight from	2400 g	84.7 oz
Wing loading	48.0 g/dm	15.7 oz/sq ft
Aspect ratio	15.1
Wing airfoil	Custom
EDA (dihedral)	2.5º
Centre of Gravity	103-107 mm from wing leading edge
Controls	Ailerons, flaps, elevator, rudder

Recommended Servos
Rudder (nose mounted)	KST DS145, KST X10-710, KST MS325, KST MS320, KST X12-508, KST DS215
Elevator (fin mounted)	KST X08, KST X08H, KST A08, KST A08H, MKS HV6110, MKS HV6100, MKS DS6100
Flap	KST DS125, KST X10, MKS HV6130
Aileron	KST DS125, KST X10, MKS HV6130

Tempest Carbon Layup Typical Weights
Fuselage inc nosecone	368 g	13.0 oz
Left wing	624 g	22.0 oz
Right wing	622 g	21.9 oz
Tailplane	71 g	2.5 oz
Wing joiner	94 g	3.3 oz
Accessories	67 g	2.4 oz
Total structure	1846 g	65.1 oz
Wiring	33 g	1.2 oz
Receiver	10 g	0.4 oz
Elevator servo	9 g	0.3 oz
Rudder servo	20 g	0.7 oz
Wing servos (4)	112 g	4.0 oz
Battery	160 g	5.6 oz
Nose weight	210 g	7.4 oz
Flying weight from	2400 g	84.7 oz