Prop Cone

[alderman]

I have a older Sea King motor 5 HP built in 1963. The only thing that holds the prop on the shaft is a small 3/16 dia shear pin and a cotter key. A rubber prop cone then slides over the the whole works. If the prop cone comes off the shear pin falls out. Anyone know of a better system for this motor? Or is this as good as it gets. Thanks in advance.

 

[WillyBWright]

Re: Prop Cone

As long at the rubber isn't rotten, it does unbelievably well at holding it all together. To get along without...cut some brass shaft of appropriate diameter just a bit long and pien over each end once it's in place. I have a similar setup, but the cone is plastic. I carry a spare prop and All of the hardware including a cone. On yours, the cone just holds the shear pin in. The cotter pin is there to keep the prop on the shaft if the key shears.<br /><br />Part of carrying an extra prop is also carrying a full set of prop hardware. If you lose a prop, you lose all the hardware and just a spare prop isn't going to help much. Then there's the ominous kerplunk when you're trying to hang over the back and change a damaged prop...often accompanied by a loud "S#$T!".

 

[alderman]

Re: Prop Cone

Thanks for the info, mine is rubber and has gone bad from age and setting out in the sun for 3 years. I have not been able to locate a replacement cone extra parts or prop yet. Figured brass pin would work, thought someone might know of after market replacement. Thanks again for the info. This is a great site and I have gotten lots of good advice.

 

[cajun555]

Re: Prop Cone

alderman, if you've got enuff prop shaft, you can drill a 1/8" hole through cone and shaft and secure with a S.S. cotter key. Thats how its done on a "62" 28hp rude that I have. <br /><br /> Good luck.