24-11-2022, 02:47 PM
You should be able to see the difference without taking the sump off - the three bearing crank has a big centre bearing:
![[Image: s-l400.jpg]](https://i.ebayimg.com/images/g/2CwAAOSwh-Je6Txh/s-l400.jpg)
whereas the two bearing crank is simpler with just a small counterweight in the centre:
![[Image: s-l400.jpg]](https://i.ebayimg.com/images/g/2CwAAOSwh-Je6Txh/s-l400.jpg)
whereas the two bearing crank is simpler with just a small counterweight in the centre: