Originally Posted by Pluto
Thanks B. My problem is the prop is spinning freely on the shaft. My diver thinks the keyway failed but doesn’t want to remove the propeller without having a new keyway. Anyone know what size the keyway is?
The "keyway" is already machined into both the shaft and the prop.
The "key" is what likely sheared.
If you know the shaft diameter it should be a standard size for that shaft.
You should be able to find that out via google search or by asking a prop shop.
You might want to know why it failed. Did you hit something?