Sheer pins?

[CV16]

Hi guys. I just got a few more motors to play with. One is a 1971 Johnson 9.5 model# 9R-71R, and the other is a 1960 Evinrude 5.5 Fisherman. So far I've found all I needed here on Iboats, but I can't seem to find the sheer pins antwhere on the sight. I would go to my local dealer, but he has no interest in selling me parts unless the motor is less than 10 years old. I've gone in with newer motors, won't even try with these. I put new impellors and thermostats in both. They both run like almost new. I even converted the 5.5 to a non-pressurized gas tank from the links found here. I have a buddy with a Jon-boat and a 14' tri-hull, neither with motors. I'd like to put these on for him, but would like a few spare pins!!! Can anybody point me in the right dirrection? Even letting me know what type of material would work would fill my needs. I can make all I need, I'm a machinist so that's not a problem. My problem is that neither motor has one to look at to see what I'm missing!

 

[F_R]

Re: Sheer pins?

The 9.5 takes a part number 307949 Drive Pin. It is 3/16" x 1-3/8" Stainless Steel
The 5.5 takes a part number 302333 Drive Pin. It is 3/16"" x 7/8" Monel (Heck, use stainless)

I would think your dealer would get them for you if you go in armed with the part numbers. All he has to do is put it on his order sheet and collect your money. But like you, I just make them.

 

[CV16]

Re: Sheer pins?

Thanks, that's just what I was looking for. I would think stainless would be too strong, but I'll use it.

 

[F_R]

Re: Sheer pins?

They are SUPPOSED to be strong. They are DRIVE pins, not shear pins. Who wants to hang over the transom to replace a shear pin anyway? The 5.5 has a slip clutch built into the lower unit that releases when you hit something. The 9.5 has a rubber hub in the propeller that provides the same protection. Don't worry, that 3/16 pin is not as strong as the 7/16 or larger drive shaft, and the pin will break first if you really mortally clobber something.