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Old 07-25-2013, 06:53 PM   #1
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shear pin metal

Bin a long time since I have used a shear pin for an outboard.

But I got a question.

Metal to use.

Soft or hard / brittle .

For the river where props meet wood.

old 10 hp outboard.

I am thinking something a bit soft but.

?????????????????????????????
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Old 07-25-2013, 09:04 PM   #2
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I would think soft as well but that is just an educated(questionably) guess. If I couldn't source one and had to make one from scratch, intuitively I would be inclined to turn one down from a piece of brass round stock or perhaps even aluminum on my lathe. Brass to resist the possibility of corrosion. But like I said OFB, that is only a WAG.

Hopefully someone with actual knowledge will chime in.
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Old 07-25-2013, 10:11 PM   #3
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My old outboards with aluminum propellers always had brass sheer pins. My newer outboard 3.5hp with nylon propeller has aluminum shear pins. You can get both in many diameters at a good hobby shop.
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Old 07-26-2013, 08:46 AM   #4
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Or in a pinch a hardware store will have machine screws in brass and possibly aluminum. Cut the head off and you have a pin.
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Old 07-30-2013, 12:00 PM   #5
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Pop used to use the end piece of welding rod. Cheap .

Worked fine in these waters as long as you never shifted gears at above idle.

But I kinda think it work fine for the low power of a 10 hp compared to the 75 hp pop ran.

Any way thanks for the thoughts.
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Old 08-01-2013, 12:31 PM   #6
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Had an old Johnson 18 on my john boat and when I went fishing I always carried a spare 16d nail. Worked on the James River for me.Larry
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