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0 pointslostlogin2y ago0 comments

Luckily, mine are all the cheap Shimano ones. This is their top stuff isn’t it?

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4 comments · 2 top-level

bombcar2y ago· 2 in thread

In biking especially the high end stuff is often made out of exotic materials for low weight and can do strange non-metallic thinks, like shattering.

wl2y ago

These cranks are aluminum. The problem is that they are a hollow clamshell design to save weight. The bonding of that clamshell design is problematic.

jeffbee2y ago

The newer hollow cranks aren't problematic, so it can't be just that it's difficult to make a hollow crank. And it's not even that fancy any more, considering that the $100 FC-R7000 is also hollow.

petre2y ago

Yup. The cheap 'heavy' ones are forged. Safe.

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