6.8 is one of those numeric constants that every cyclist is familiar with. It refers to the 6.8 kilogram minimum weight limit set by the UCI which restricts all bikes used in competition to this weight. This regulation was established in 2000 as a means to ensure manufacturers don’t push the structural integrity of bikes and so that teams are competing on a relatively similar machines.paja napisao:Da limit je 6,8 min. Pitanje je koji je bio motiv za postavljanje granice, da li bezbednost ili želja da se svima omoguće isti uslovi.
Danas je jako lako (uz puno para) sklopiti bicikl koji je lakši od tih 6.8 kg. Ram sa viljuškom, šticnom i koje čime još bez problema biva do 1,5 kg, točkovi sa gumama daleko ispod 1,5 kg, mehanika takođe ispod 1,5 kg. Tako da postoji jako veliki prostor da se voze npr teški točkovi jer su Shimano koji je sponzor, a ne npr Mavic koji je laši 300g i sl.
Elektronska grupa je osetno teža od mehaničke pa je većina vozi.
...This specialist, with the advice of other experts, has defined that 6,8Kg is the minimum weight acceptable for a bicycle, for an essential reason that is the manoeuvrability of the bicycle. Of course, technical risks related to composites materials have also been considered, but the primary reason of this rule is the manoeuvrability...
...We are aware that technology and materials evolve, and it would be comprehensible to think today that from a technical point of view, this weight limit could be lowered. But we have no assurance that bicycles of 6Kg (for example) are safe. We have in our Equipment Commission an engineer specialist of cycling, who worked for many manufacturers and who have designed several bicycles that are still in the peloton. This engineer expert in composite materials is not completely convinced of the reliability and strength of the bicycles weighing about 6Kg. We know that some bicycles of less than 6,8 Kg are commercialized and that some manufacturers think they are safe. We also have feedbacks from many other manufacturers who don’t think the same thing, and who advise us to leave this 6,8Kg weight limit, because this limit is very accurate and that it prevents an unreasonable race to the minimum weight...
http://cyclingtips.com.au/2013/08/the-6-8kg-limit/
Na Djiru 2004, trkaci koji su vozili Kenjce, lepili su tegove na gornju cev da bi otezali bicikle a sto je ujedno bila i svojevrsna reklamna kampanja.
