i do pedalkicks on my demo.. with the brake blocked. and so .. never broke a spider..
mate of mine runs m6 with alu spider rotors on his trials bike.. thats even more abuse.. i did warn him about this.. but he hasn't any problems yet..
dat is nog niet zo erg :p ik had net het zelfde schijfeje maar dan in het goud :p en bij is het hele middelste stuk naar de haaien geen scheurtjes eh helemaal gebroken ik heb het middelste stuk in 7kleine stukjes :p
thats nothing bad really, caused by a bolt that was sticking out of the adapter, I replaced the bolt with a shorter one, it has nothing to do with the disk breaking
ahh just looked as if something was hitting it quite hard which may have caused the cracks but if the bolt was replaced early then it shouldnt have caused them
this same thing happend to my hope floating rotor, 4 cracks where the outer disk is riveted onto the centre. and that was using a 2 pot shimano deore XT.