Dr. Kurt Michaux

Thanx everyone for all the great answers....... Sounds like a possible electrolysis mark. Does the boat stay in the water at a dock? Have you used it in salt water? Have you used it on the upper St. Johns? I doubt that it is a stress anything. never been in salt, st johns or anywhere near it....never left it in water either......what is an electrolysis mark? thanx again, kurt

Hey there....... Was wondering if anyone could tell me.........I had someone looking at my boat the other day to purchase it and the person looking seemed to be a very nice gentleman, but I am curious......He said my prop had a stress fracture in it. It was approximately 4 inches long and looked like a piece of string, but it was rust. The prop is stainless steel that came on my Yamaha 225 HPDI/Ranger Z20. Since I have no knowledge of these things, I didnt know what to say. It was running front to back on the main part of the prop, not the blades..........it didnt start or finish at the end and didnt go all the way through to the inside. Since I deal with human bones as a profession and see many fractures, that seemed to me to be not possible to fracture that way, but I dont know stainless steel............any opinions or suggestions. thanx kurt