http://www.youtube.com/watch?v=NSCtEQ_uRrI
Um vídeo desse site a comprovar a rigidez das mesmas. Isto num par de rodas que custa uns bons milhares de euros. 1000 vezes melhores são as Lightweight ou as Mavic Cosmic Ultimate. Estas últimas é que devem ser a melhores rodas globalmente. Só tem um contra, o preço
Se tiveres paciência para ler, lê este artigo todo.
http://www.rouesartisanales.com/article-15505311.html
E aqui mais resumidamente:
3 - the Lew Racing Pro VT-1 have carbon/boron spokes bonded into the rim and the hub, they have no tension so the wheel is extremely flexy laterally and radially. However, when moving, the rear wheel remains extremely stiff because the power output of the rider passes through the central flange of the hub, which is in the same plane as the rim. This central flange prevents lateral rim movement between the brake pads because the torque passes from the hub to the rim directly.
All other wheels, equipped with a standard dual flange hub, transfer torque with a lateral component created by the bracing angle of the wheel (i.e. paragraph 2b of the lateral stiffness), so the rim is liable to move between the brake pads.
Said another way, the lateral stiffness test represents the deformation of the wheel due to rider weight and rider strength. But, for the Lew, this test does not reflect the dynamic qualities of the wheel well, it only shows the rider weight limit, because the Lew does not flex a great deal laterally when stomping on the pedals.
Below you'll find a graph showing theoretical differences in lateral stiffness for four of the most special wheels of the market constructed from our data on rim deflection at two different loads.
We can clearly see that the very small lateral stiffness difference (slope of the curve) under small loads, get much bigger once the rim starts to deflect. The Mavic Cosmic Carbone Ultimate is extremely stiff despite a very low weight (1200g the set), the Lightweight Standard is a little flexier, and the Obermayer, even more so. This is in part what's prompted CarbonSports to launch a Sprint version of its wheels for 2009, which it claims will restore them to first place again. They use 20 spokes front and 24 rear, versus the usual 20 spokes rear, to achieve this.