Love Tubs – Member
Hey DezB & Kimbers….tell ya what’s funnier, the rubber shock absorbers in forks and seat-stays, connected by high modulus carbon links thus directing the majority of the shock force erm, along the tube??
Much as I love sticking the boot in whilst the other man’s international bike company’s down, you’re talking bollox.
The CFRP forms a ‘S’ shaped spring in the fork/seatstays, which can compress/extend. The elastomer insert isn’t suppourting your weight (much, it’ll take a fraction), it’s there to dampen the spring effect. CFRP has relatively low loss factor (damping) so an undamped version would vibrate/oscilate over cobbles, rather than absorb the energy.
Canyon have been doing something similar with the VCLS CFRP seatposts, ading bassalt fibres which have a greater loss factor, so they can make posts with lots of movement, that don’t oscilate like a Ti post when pedaling.
Which is why Pinarello’s bike design really is bolox, and ugly (and why steel/ti feel springy, but CFRP feels ‘dead’)!