Crank Size

[chip39]

How do you determine the crank size. stock, 1mm, 2mm. I have a few cranks from a buy out and would like to know what size they are. They are all out of BB211 G290RC motors from different builders.

 

[KevTrem]

Aren't they normally stamped or etched with what they are?

 

[chip39]

never seen any markings. That's whats got me confused.

 

[one2boost]

The easiest way to confirm the size of a crankshaft and take some measurements. I have a couple older 30mm crankshafts based on the Zen 290 that are not etched or stamped.