Guardacaso io tutte le migliaia di foto di bici in carbonio rotte le ho viste a bordo strada e non in salotto, e a parte un paio di "cuggini" in tutto il mondo, non ho praticamente mai sentito di gente che la bici l'abbia rotta sui rulli.
Comunque, dato che ti viene in mente BMC, ti rispondo cosi:
From Ridley:
Using a Ridley on a trainer does NOT affect the warranty and the frame.
— Jochim Aerts
CEO Ridley, Belgian Cycling Factory
From Specialized:
There is certainly something to this concern. The loads into a bike frame are totally different in the rear triangle on a trainer compared to riding on the road. In the FEA (i.e., Finite Element Analysis, a predictive computer modeling method of how a structure will react to applied forces) world we would say the constraints are different.
We have a special lab test to double check for this situation since the ISO/CEN test is not an adequate predictor of trainer frame fatigue.
“In response to the increasing popularity of trainers, we have developed a very rigorous proprietary test which all MY20 and later road frames have to pass in order to be released to the market. While we cannot predict every single trainer use and/or setup, we believe our test is rigorous enough to be able to recommend our MY20 and later road frames for common trainer use,” says Kelly Henningsen,
Specialized's PR and Operations Manager for Road.
Henningsen says Specialized's new testing protocol takes into account the twisting forces between the rear axle and BB and is designed to put its frames through an entire life cycle of heavy trainer use.
“It’s almost like a simulation of being stuck indoors for the next ten years,” she says. “Still, it is important to follow the trainer manufacturer’s instructions and make sure everything is set up properly. We also recommend a periodic safety inspection in case of frequent or hard trainer use."
Christian Worth,
Canyon’s Director of Quality Management, tells
Cyclingnews, “The fixation on the turbo trainer is causing a different load transmission into the rear triangle of the frame (compared to normal bike riding).
A new test setup has been developed to simulate these conditions on the test rig. The new test has become an integral part of Canyon’s testing conditions. It means that in case a bike is likely to be used on a turbo trainer, this test will be part of the development process and consequently, the new requirement can have an impact on the design of new bikes.”
Tutte le citazioni su trovano su Velonews e/o Cycling News.
No pero' dai io a Giggino 'O Meccanico ro quartier ci credo. Gia' me le vedo le scene, "Giggiiiii marooonn s'e' snervat o telaaaiij "