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Am I right in assuming that the narrow and filed teeth on modern cranksets won‘t last half as long as the late 80s/early 90s stuff?
No. There's more to it than just how much metal is engaged with the rollers, and most of the low teeth and side relief is in places not engaged by the rollers anyway so it only sees any wear when shifting the chain from one ring to the other. Other things which can affect chain ring wear rate are alloy composition and temper, surface finish, coating and overall accuracy of manufacture. Those things have improved markedly but largely invisibly over the past 30 years
Also, all that tooth shaping is there to make shifts faster, and less time spent grinding your gears means less wear on the sides of the teeth, an area which could take a beating on old school chainsets which had, by modern standards, two single-ring specific chainrings.
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gbj_tester
That‘s interesting to know. Am I right in assuming that the narrow and filed teeth on modern cranksets won‘t last half as long as the late 80s/early 90s stuff?
@BernardRenault thanks, the pedals are placeholders since I still haven‘t managed to decide on a clipless system and get the equipment.
@Heldring cheers :)
@Jaap don‘t know tbh, I found it unpacked in a shelf at work. Will ask my colleagues.
@mcamb they were pretty mint so there may be some anodization left that adds to the poor performance. I‘ll get some new pads soon then i‘ll see :)