| Stiffness and Weight of Sport Kite Spars | |||||||
| Outer | |||||||
| Spar | Short | Relative | Relative | Scale | Weight | Diam | |
| Type | Name | Stiff. | Weight | Fact. | g/m | mm | Rem |
| Ref. spar: Exel Extreme 6 | Exel-E6 | 1.00 | 1.00 | 1.00 | 23.0 | 5.9 | S |
| SkyShark Response Zero (brown ring) | ResZero | 0.19 | 0.33 | 0.66 | 7.5 | *6.5 | S |
| AFC 1580 | AFC1580 | 0.21 | 0.48 | 0.67 | 11.0 | 4.0 | S |
| AFC 1700 | AFC1700 | 0.26 | 0.53 | 0.71 | 12.3 | 4.3 | L |
| Epsilon pull wound 6 | EPW6 | 0.28 | 0.57 | 0.73 | 13.0 | 5.9 | S |
| Clearwater 187-2 | CW187-2 | 0.29 | 0.40 | 0.73 | 9.3 | 5.5 | L |
| Epsilon carbon-k(evlar) 6 | ECK6 | 0.32 | 0.66 | 0.75 | 15.2 | 5.9 | S |
| AFC 1800 | AFC1800 | 0.32 | 0.67 | 0.75 | 15.3 | 4.5 | L |
| AVIA Sport G-Force 2 Skinny | GF2S | 0.34 | 0.45 | 0.76 | 10.3 | *7.8 | G |
| Clearwater 202-2 | CW202-2 | 0.34 | 0.44 | 0.76 | 10.2 | 5.9 | L |
| AFC 1880 | AFC1880 | 0.38 | 0.65 | 0.79 | 14.9 | 4.8 | L |
| AVIA Sport 1800 | A1800 | 0.42 | 0.68 | 0.08 | 15.6 | 4.6 | G |
| AFC 1960 | AFC1960 | 0.45 | 0.72 | 0.82 | 16.5 | 5.0 | L |
| SkyShark 2P (brown ring) | 2P | 0.47 | 0.35 | 0.83 | 8.0 | 6.5 | S |
| AVIA Sport 1880 | A1880 | 0.47 | 0.73 | 0.83 | 16.8 | 4.8 | G |
| Vlieger-Op Exel RCF 5 | RCF5 | 0.49 | 0.65 | 0.84 | 15.0 | 4.9 | M |
| SkyShark Response 12g (1995) | Res12g | 0.54 | 0.52 | 0.86 | 12.0 | *8.0 | G |
| Glassforms Prospar PS-15-278 | PS278 | 0.57 | 0.91 | 0.87 | 21.0 | 7.1 | M |
| Beman Ultra Light 14 | BeUL14 | 0.58 | 0.70 | 0.87 | 16.0 | 5.5 | S |
| AFC 2100 | AFC2100 | 0.58 | 0.88 | 0.87 | 20.2 | 5.3 | L |
| AVIA Sport 1960 | A1960 | 0.58 | 0.81 | 0.87 | 18.7 | 5.0 | G |
| Advantage 250/2 | ADV/2 | 0.60 | 0.71 | 0.88 | 16.4 | 7.3 | L |
| Clearwater 250-2 | CW250-2 | 0.60 | 0.59 | 0.88 | 13.6 | 7.1 | L |
| Beman 5.5 mm (arrow shaft) | Bem5.5 | 0.64 | 0.76 | 0.89 | 17.5 | 5.5 | S |
| Beman Carbon Light 14 | BeL14 | 0.70 | 0.78 | 0.91 | 18.0 | 5.5 | S |
| AFC 2200 | AFC2200 | 0.70 | 0.96 | 0.91 | 22.2 | 5.6 | L |
| SkySHark Response 15g (1995) | Res15g | 0.70 | 0.65 | 0.92 | 15.0 | *8.0 | S |
| Vlieger-Op Exel RCF 6 Strong | RCF6S | 0.71 | 1.39 | 0.92 | 32.0 | 5.9 | S |
| Beman Ultra Light 6.0 | BeUL60 | 0.73 | 0.70 | 0.92 | 16.0 | 6.0 | S |
| Beman Carbon Strong 14 | BeSTR14 | 0.75 | 0.91 | 0.93 | 21.0 | 5.5 | M |
| AVIA Sport 2100 | A2100 | 0.77 | 0.89 | 0.94 | 20.6 | 5.3 | G |
| AVIA Sport G-Force 2 UL 40" | GF2UL40 | 0.77 | 0.60 | 0.94 | 13.8 | *8.8 | G |
| Beman Ultra Light 16 | BeUL16 | 0.80 | 0.78 | 0.95 | 18.0 | 6.3 | S |
| Beman Pro-Competition 14 | BePRO14 | 0.81 | 0.74 | 0.95 | 17.0 | 5.5 | S |
| AVIA Sport G-Force 2 Skinny 40" | GF2S40 | 0.81 | 0.60 | 0.95 | 13.8 | *7.8 | G |
| Glassforms Procomp CP-15-278 | CP278 | 0.84 | 0.78 | 0.96 | 18.0 | 7.1 | M |
| AFC 2300 | AFC2300 | 0.84 | 1.00 | 0.96 | 23.0 | 5.8 | L |
| Vlieger-Op Exel RCF 6 | RCF6 | 0.85 | 0.96 | 0.96 | 22.0 | 5.9 | S |
| AVIA Sport 2200 | A2200 | 0.95 | 1.03 | 0.99 | 23.7 | 5.6 | G |
| AVIA Sport G-Force 2 UL | GF2UL | 0.96 | 0.62 | 0.99 | 14.3 | *8.8 | G |
| Vlieger-Op Exel Extreme 6 | Exel-E6 | 1.00 | 1.00 | 1.00 | 23.0 | 5.9 | S |
| AFC 2400 | AFC2400 | 1.00 | 1.11 | 1.00 | 25.5 | 6.1 | L |
| SkyShark 3P (purple ring) | 3P | 1.03 | 0.52 | 1.01 | 12.0 | 7.4 | S |
| Advantage 250/3 | ADV/3 | 1.06 | 1.08 | 1.02 | 24.9 | 7.7 | L |
| Clearwater 250-3 | CW250-3 | 1.06 | 0.83 | 1.02 | 19.1 | 6.9 | L |
| Beman Strong Carbon 6.0 | BeStr60 | 1.08 | 1.04 | 1.02 | 24.0 | 6.0 | S |
| Glassforms Prospar PS-16-306 | PS306 | 1.11 | 1.28 | 1.03 | 29.4 | 7.8 | L |
| AVIA Sport 2300 | A2300 | 1.12 | 1.10 | 1.03 | 25.2 | 5.8 | G |
| Beman Carbon Strong 16 | BeSTR16 | 1.15 | 1.13 | 1.04 | 25.9 | 6.2 | S |
| Clearwater 315-2 | CW315-2 | 1.17 | 0.74 | 1.04 | 16.9 | 8.8 | L |
| Beman Carbon Light 16 | BeL16 | 1.20 | 1.00 | 1.05 | 23.0 | 6.2 | S |
| AFC 2540 | AFC2540 | 1.26 | 1.29 | 1.06 | 29.6 | 6.5 | L |
| Vlieger-Op Exel RCF 6 Ultra | RCF6U | 1.27 | 0.74 | 1.06 | 17.0 | 5.9 | S |
| SkyShark 5P (white ring) | 5P | 1.29 | 0.65 | 1.07 | 15.0 | 7.6 | S |
| AVIA Sport 2400 | A2400 | 1.32 | 1.17 | 1.07 | 26.8 | 6.1 | G |
| AVIA Sport G-Force Std | GF2Std | 1.32 | 0.88 | 1.07 | 20.3 | *8.8 | G |
| Clearwater 280-3 | CW283 | 1.35 | 1.01 | 1.08 | 23.3 | 8.3 | L |
| Clearwater 250-4 | CW254 | 1.42 | 1.24 | 1.09 | 28.6 | 7.9 | L |
| Advantage 250/4 | ADV/4 | 1.42 | 1.36 | 1.09 | 31.2 | 8.1 | L |
| Glassforms Procomp CP-16-309 | CP309 | 1.43 | 1.10 | 1.09 | 25.3 | 7.8 | L |
| Glassforms Prospar PS-19-352 | PS352 | 1.54 | 1.43 | 1.11 | 32.8 | 8.9 | L |
| Vlieger-Op Exel RCF 7 | RCF7 | 1.62 | 1.13 | 1.13 | 26.0 | 6.9 | S |
| Clearwater 315-3 | CW315-3 | 1.86 | 1.11 | 1.17 | 25.5 | 9.1 | L |
| Glassforms Procomp CP-19-352 | CP352 | 2.00 | 1.25 | 1.19 | 28.7 | 8.9 | L |
| SkyShark VIIP (1994) | VIIP | 2.11 | 1.17 | 1.21 | 26.9 | 8.4 | L |
| Vlieger-Op Exel RCF 8 | RCF8 | 2.17 | 1.39 | 1.21 | 32.0 | 7.9 | S |
| Beman Ultra Light 21 | BeUL21 | 2.28 | 1.17 | 1.23 | 27.0 | 8.3 | S |
| Vlieger-Op Exel RCF 8 Strong | RCF8S | 2.57 | 1.59 | 1.27 | 36.5 | 7.9 | M |
| Vlieger-Op Exel RCF 9 | RCF9 | 3.10 | 1.52 | 1.33 | 35.0 | 8.9 | M |
| Clearwater 385-3 | CW385-3 | 3.25 | 1.13 | 1.34 | 26.0 | 10.9 | L |
| Vlieger-Op Exel RCF 9 Strong | RCF9S | 3.81 | 1.83 | 1.40 | 42.0 | 8.9 | M |
| Vlieger-Op Exel RCF 10 | RCF10 | 4.74 | 1.74 | 1.48 | 40.0 | 9.9 | M |
| Vlieger-Op Exel RCF 10 Strong | RCF10S | 5.44 | 2.22 | 1.53 | 51.0 | 9.9 | M |
| Vlieger-Op Exel RCF 11 | RCF11 | 5.77 | 1.96 | 1.55 | 45.0 | 10.0 | M |
| S = Based on measurements by Simo Salanne | |||||||
| L = Based on measurements by David Lord | |||||||
| G = Based on measurments by Michael Graves | |||||||
| M = Based on manufacturers data | |||||||
| * = Larger diameter end | |||||||
