Please activate JavaScript!
Please install Adobe Flash Player, click here for download

TOUR QTR 4-2011

TOUR tested 15 aerodynamic spoke wheels and 3 disc wheels. Which are fastest? The wind tunnel results will surprise you!

S 2.3 Fast Forward HEd Hed 2.6 3.1 S SC C Lightweight 2.1 S C LRT The diagram shows the frequency of yaw angles at three riding speeds combined with a crosswind profile blowing at an average velocity of 10 km/h - 6 mph. Fast riders experience smaller yaw angles than slower riders. Angles over 25 degrees, that occur at slower speeds with a prevalence of 7% total, are disregarded. TOUR uses this weighting to convert aerodynamic drag profiles into weighted resistance values measured in watts. LRT aero wheels with spokes manufacturer model Web price per wheelset number of spokes front/rear variants/miscellaneous extras measured data aerodynamics at 30/40/50 km/h1) acceleration energy2) stiffness front/rear rim width x height weight (front/rear/quick release) rider weight limit TOUR evaluation aerodynamics at 40 km/h (25%) weight front + rear (20%) braking (20%) front stiffness (10%) rear stiffness (10%) wheels in true (10%) acceleratation (5%) final grade (100%) conclusion Prevalence of YAW angles 25 20 15 10 5 0 frequencyinpercent 0 2.5 5 7.5 10 yaw angles in degrees 12.5 15 17.5 20 22.5 25 30 km/h - 19 mph 40 km/h - 25 mph 50 km/h - 31 mph Footnotes 1) Aerodynamic drag for a single front wheel in the wind tunnel, influence of side wind is factored in. 2) Energy necessary to accelerate a wheelset including tires from 0 to 30 km/h - 19 mph. *Insurance at additional cost. Legend S C LRT Shiman-compatible Campy-compatible tubeless tubular tires wheel bag tools magnet brake pads valve extension quick release F6R-c www.ffwdwheels.com € 1198 / $ 1725 / £ 1051 20/24 aero spokes 4.2/11.0/24.6 watts 139 joules 51/37 N/mm 19.8 x 58.3 mm 872/1033/86 grams 90 kg - 198 lbs 2.0 4.3 1.0 2.3 3.3 2.2 4.3 Aerodynamically convincing despite its slim rims - especially at 30 to 40 km/h (19 - 25 mph). Optimal at 15 degree yaw angle. Various hub options are available, can also be ordered without stickers. H3D www.hedcycling.eu € 2598 / $ 3741 / £ 2278 3 large airfoil section spokes crash replacement 4.3/11.4/24.2 watts 156 joules 35/33 N/mm 19.0 (rear 21) x 87.6 mm 1089/1211/95 grams – 2.0 5.0 1.0 4.3 4.0 2.8 5.0 Modified classic, used in the Tour de France. The added fairing deepens the rim profile - which brings a small advantage at 5 degrees of incident flow, but otherwise has only disadvantages. Jet 9 www.hedcycling.eu € 1668 / $ 2402 / £ 1463 18/24 aero spokes crash replacement 3.4/9.3/23.5 watts 150 joules 59/37 N/mm 23.2 (rear 24.4) x 90 mm 914/1085/95 grams 86 kg - 190 lbs 1.3 4.7 1.0 1.3 3.3 1.6 5.0 Trendsetter: one of the first wheel- sets with broad rims. Aerodynami- cally great, the second-best spoke wheel tested. As soon as the yaw angle reaches 15 degrees, its perfor- mance is excellent. Power Tap variant € 700 more, 149 g heavier. Fair price. Standard C www.lightweight.info € 3520 / $ 5068 / £ 3086 16/20 aero spokes crash replacement* 5.1/13.0/26.4 watts 98 joules 67/52 N/mm 20 x 47.6 mm 531/643/44 grams 120 kg - 265 lbs (incl. loaded bike) 2.7 2.0 2.0 1.0 1.7 2.3 1.7 Test winner. Lightweight does it again in the overall ranking. Rigidity and light weight are the deciding factors. The aerodynamics are only so-so, but the feel of the ride is excellent. Grades: 1 = Very good, 2 = Good, 3 = Satisfactory, 4 = Sufficient, 5 = FailING German PRICES, the price in your country may vary T01_11_EN_103_107_Laufraeder_Einzel.indd 104 25.08.2011 11:14:28 Uhr