Prop Shaft

[HotWater]

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They were not all failure of material. Installing propellers & making correct keys for each prop is what's important. Installing the propeller correctly is where it's at.

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?