As for the bravado of the 'blood and guts' racing starts being the be all and end all,rubbish! A roller IS far safer,regarding mechanical breakage,anything that is mechanical is inherently liable to breakage,the nature of the component,however old,is that it is still made in steel/aluminium,neither of which can be said to be 'bullet proof'.I just hope that these words are not proven correct on any start line!!