Originally Posted by timcupery
A useful explanatory article is on Sheldon Brown's site:
www.sheldonbrown.com/dp-forging.html
I'm guessing that the FC-1050 crank is forged, but still no one knows, or has the specific advantages of a forged crank over a cast crank. This is one of the times where I practically miss Sydney.
I think each of the advantages of forging discussed in the last paragraph under "forging" of Sheldon's article (increased density, increased strength especially at the surface, and the ability to design tools and dies that will put the most strength where needed) can be applied to cranks..........All I can do is guess about the 105 cranks being forged, but even lower-end Sugino cranks I've got laying around have "forged" stamped on the back of the crankarms-