Why do parts fail?

[Kiwi_Roy]

A couple of guys rabbiting on about overstressed parts.

I didn't pick up on the solution. but they didn't seem to recommend ball or roller bearings for a crankshaft.

https://www.youtube.com/watch?v=QiIT6G3GU4o

i assume our guzzles with a one piece crankshaft and slipper bearings are less likely to fail.

[faffi]

I enjoy their ramblings, always something new to learn.