Quote Originally Posted by gn7 View Post
I have no problem with the age of the machines at Glenwood. The shaft that was in my boat was a K Monel shaft from Glenwod and was in it for 5 years when I bought it. I reversed the rotation of the shaft by driving the boat off the flywheel{previous owner off the snout). I ran it for 3 hears like that, then reversed it back to off the snout, and ran it another 3 years before I decided I was pushing my luck and replaced it with a K Monel from Glenwod, and I STILL use the old shaft in the enduro (5 to date). I say its doing pretty well compared to some shafts I have seen.

The K Monel shaft Glenwood cut for Rudy's Allison boat won two Salton Sea 500, the Lake Berryessa 6 hr, and ran a couple Parker 9 hrs, transmitting 1500 lbs of torque the entire time, moving a whaling ship 85-90 AVERAGE, and the shaft is still in the boat to this day.
than all the previous talk about having the the surface to tip speed constant at all diameters doesn't mean that much or how the keyway is cut either

they broach cut the keyway , and the prop shaft taper is cut on a old engine lathe, than put into a chucker to have the threads cut.. look on the shelf outside the door at the rack of shafts .. almost everyone has both ends cut and one trashed with red dyekem on it. they charge a 75.00 tool charge for aqua met and kmonel because it tears up there tools ... hmmm.