Litespeed S

Specifications

Model Size Litespeed S 3 Litespeed S 3.5 Litespeed S 4 Litespeed S 4.5 Litespeed S 5
Area (between tight and loose VG) 12.8 sq.m 13.5 sq.m 13.9 sq.m 14.4 sq.m 14.8 sq.m
138 sq ft 145 sq.ft. 150 sq.ft. 155 sq.ft. 159 sq.ft.
Span ( tight) 9.67m 9.95 m 9.95 m 10.40 m 10.4 m
31.7 ft 32.6 ft 32.6 ft 34.1 ft 34.1 ft
Nose Angle (tight-loose) 130-125 degrees 130-125 degrees 130-125 degrees 130-125 degrees 130-125 degrees
Aspect Ratio 7.3 7.3 7.1 7.5 7.3
Glider Weight (carb->alu) 31-33 kgs 32-34 kgs 32.5-34.5 kgs 34-36 kgs 34.5-36.5 kgs
68-72 lbs 71-75 lbs 72-76lbs 75-79 lbs 76-80 lbs
Optimal Pilot Weight 55 kgs 70 kgs 75 kgs 83 kgs 93 kgs
122 lbs 154 lbs 165 lbs 183 lbs 205 lbs
Hook-In-Weight 59-89 kgs 66-96 kgs 70-112 kgs 80-104 kgs 85-119 kgs
130-196 lbs 146-212 lbs 155-247 lbs 176-229 lbs 187-262 lbs
Packed-Length 4900 mm 4950 mm 4950 mm 5320 mm 5320 mm
16.1 ft 16.2 ft 16.2 ft 17.45 ft 17.45 ft
Short-Packed Length 3800 mm 4330 mm 4330 mm 4500 mm 4500 mm
12.5 ft 14.2 ft 14.2 ft 14.8 ft 14.8 ft
C of G Front of Keel 1343 mm 1343 mm 1353 mm 1343 mm 1343 mm
52.9 inches 52.9 inches 53.3 inches 52.9 inches 52.9 inches
Number of Battens:
Mainsail 21 23 23 23 23
Undersurface 6 6 6 6 6
VNE (truck test) 100 kph 100 kph 100 kph 100 kph 100 kph
62 mph 62 mph 62 mph 62 mph 62 mph
VA 74 kph 74 kph 74 kph 74 kph 74 kph
46 mph 46 mph 46 mph 46 mph 46 mph
Trim Speed 32 kph 35 kph 34 kph 35 kph 35 kph
20 mph 22 mph 21 mph 22 mph 22 mph
Stall Speed 28 kph 29 kph 28 kph 29 kph 28 kph
17 mph 18 mph 17 mph 18 mph 17 mph
Max Speed 115kph 120 kph 120 kph 120 kph 120 kph
71 mph 75mph 75 mph 75 mph 75 mph
Best Glide Speed 46 kph 48 kph 47 kph 47 kph 47 kph
28 mph 30 mph 29 mph 29 mph 29 mph
Best Glide Angle 14/1 14.5/1 14.5/1 15/1 15/1
Glide Angle 10:1 65 kph 70 kph 70 kph 74 kph 75 kph
40 mph 44 mph 44 mph 45 mph 46 mph

 

* Glider Weight is measured from the standard glider.  Some options will decrease glider weight by up to 2kgs.
** Quoted Centre of Gravity measurement is for Mylar sails.  For Dacron sails, subtract 10mm.
*** Measured at Optimal Pilot Weight

Features

  • Light predictable handling for easy control in heavy Traffic.
  • Reduced airframe weight.
  • A tight wrinkle free sail with minium twist providing superior glide performance.
  • Improved pitch stability and tumble resistance providing uncompromised safety.
  • A spar utilising pre-impregnated carbon fibre to ensure the best possible strength and structural consistency.

Polar

The below data represents the approximate polar setting for various Litespeed S's.

  Litespeed S 3 Litespeed S 3.5 Litespeed S 4 Litespeed S 4.5 Litespeed S 5
Minimum Sink Point:     -0.9m/s @ 40km/h   -0.9m/s @ 37km/h
High Speed Point:     -2.5m/s @ 80km/h   -2m/s @ 74km/h

These numbers are for a clean harness... if your harness is boxy, add 0.2m/s to the sink rate at high speed.