Prop Shaft

[ogshotgun]

Maybe we can get this back on track.

Lapping the prop to the taper and making sure the prop seats on the taper the same depth with or without the key are the only things I know of for proper install. What are some other steps to be taken?

on the TFH i help with , we lap the prop to shaft with 180 grit compound , till we achieve at least 80% plus contact , than we clean everything, make sure the keyway has room to move lengthwise a little , if its wedged solid it cracks the hub, just our experience, than we use red loctite and coat the shaft than install the washer, main nut torqued to 200, than jam nut at 125 pounds, after each pass the props and shafts come out , the prop is welded to the shaft and a real nightmare to get off,after that the process is done again , and again till we see tiny cracks starting to appear , than its junk, also new prop on new shaft never used with any other shafts there now a set. also on this boat we have a left and right , turning away from each other and the right prop seems to weld harder than the left prop.oh and they are Aquamet22