wht is the correct type of "external" shear pin for a 2-blade prop?

[kfa4303]

hi all. I have a 2-blade prop with its shear pin on the front side of the prop rather than the normal, backside location. When I got it, the PO was using a nail as a "shear pin" to hold it in place. I obviously need something better than a nail, but I can't see how it would work. What is to keep it from just falling out? The nail has a head on it, which helps to keep it from falling out in one direction, but if you flip the prop upside down the head of the nail can no longer keep the pin from falling out. Friction helps to keep it in place a bit, but not very well. Any ideas? Here's pic. I hope it helps.

 

[royal0014]

Re: wht is the correct type of "external" shear pin for a 2-blade prop?

A steel pin goes in that hole, then a plastic cone over the shaft, and a cotter pin holds the cone in place. You are missing some pieces.

BTW, it is NOT a shear pin. The prop has a rubber hub for that purpose.


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[kfa4303]

Re: wht is the correct type of "external" shear pin for a 2-blade prop?

gotcha royal0014. that would also explain the second hole in the drive prop shaft for the cone cotter pin. I'll try to track down a new pin and cone. Does the steel pin have a particular name? thanks

 

[Silver Heels]

Re: wht is the correct type of "external" shear pin for a 2-blade prop?

That pin would be called a drive pin.

 

[kfa4303]

Re: wht is the correct type of "external" shear pin for a 2-blade prop?

thanks heels!

 

[royal0014]

Re: wht is the correct type of "external" shear pin for a 2-blade prop?

Forgot to mention, there is also a thrust washer that goes behind the drive pin. Very important.

iboats does not sell these parts. Go to marineengine.com and look up your engine by year and hp. They have online parts diagrams that will help you determine needed parts and #'s.


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