bent crank ?

You can BEND a cam or crank "quite a ways" simply by putting it on V blocks with a dial indicator and pressing down in the middle WITH ONE FINGER.

I just don't know.

The thing about storing batteries on concrete is an old wives tale, but I still know guys who insist "you should not." Cranks? Don't know.

When shops turn, rework, or polish cranks, they sure as hell are not "on end" and they ARE unsupported in the middle, with a fair amount of pressure on them from the machine tools

Check out how long this sum beech is.......

[ame="https://www.youtube.com/watch?v=qGoPIqHrHTM"]CGX CNC Crankshaft grinding machine - YouTube[/ame]