Topic: Evinrude impeller pin question – Antique Outboard Motor Club,Inc

This topic has 12 replies, 8 voices, and was last updated 1 year, 3 months ago by boscovius.

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January 16, 2023 at 2:43 pm #271245
Ironhorse2022
Participant
Hello all,

I managed to loose the pin that keys the impeller to the drive shaft. It looks like a 1/8” pin, approx .300” long is what is needed. I haven’t found a local source that sells solid pins and hate the idea of paying $7 plus shipping for a correct one if a simple roll pin will work (which I already have a selection of). Any words of wisdom on replacing the pin ? Unfortunately, I don’t have a metal lathe to make one.
thanks
January 16, 2023 at 3:07 pm #271251
frankr
Participant
US Member
1/8″ stainless rod is readily available in most areas. Or how about an unthreaded section of a stainless steel screw?
January 16, 2023 at 4:52 pm #271258
johnny
Participant
US Member
I would not advise using a roll pin.
January 16, 2023 at 6:00 pm #271267
labrador-guy
Participant
US Member - 2 Years
How about a piece of a nail? Maybe a welding rod stub? The flux will sand off an electric welder rod easily! How about a coat hanger? There are some that are close to 1/8″ Those prices are nuts!

dale
January 16, 2023 at 7:30 pm #271276
crosbyman
Participant
Canada Member - 2 Years
deleted before to many see it 🙂 had my mind on propellers

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- This reply was modified 1 year, 3 months ago by crosbyman.
- This reply was modified 1 year, 3 months ago by crosbyman.
- This reply was modified 1 year, 3 months ago by crosbyman.
- This reply was modified 1 year, 3 months ago by crosbyman.
- This reply was modified 1 year, 3 months ago by crosbyman.
January 16, 2023 at 8:33 pm #271288
labrador-guy
Participant
US Member - 2 Years
crosbyman this fella is looking for a drive pin for his impeller!

dale
January 16, 2023 at 10:02 pm #271302
crosbyman
Participant
Canada Member - 2 Years
well that was in left field wasn’t it 🙂

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January 17, 2023 at 12:28 am #271305
boscovius
Participant
I thought it was a very bad idea to use anything but the correct shear pin as the use of a material that has a much higher shear strength will defeat the purpose of the shear pin and allow the forces from a prop strike to damage engine internals.

When I was young and dumb I used sections I’d cut off from a brass rod my buddy gave me. they worked a bit, but were too soft and didn’t last long. Finding out exactly what the metalurgy is on those shear pins and getting a length of rod would be the way to go.
January 17, 2023 at 12:37 am #271308
crosbyman
Participant
Canada Member - 2 Years
impeller pin…..:-) see post 271276 & 271288 !

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January 18, 2023 at 1:36 pm #271380
Ironhorse2022
Participant
Thanks for the feedback. I was thinking that a softer steel might corrode too much. I recall that hardened steels tend to rust less and I think the original was a hardened pin.
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