Ye, I Know eagle has a such good name. I just want so know what happens and if someone else had this problem before. My friend will send this crank to eagle and we will see what they say. Look like a material fatige. More pictures:
My wife works at a foundry(25+ yrs in management) She thinks that looks like a gas hole in the casting,which should have been seen during x-ray? Going by pics though so take as an opinion.