Topic: Johnson K50 weird shear pin diameter? Crash Video!

This topic has 16 replies, 13 voices, and was last updated 9 years, 7 months ago by Doug Wilson.

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September 21, 2015 at 9:40 am #2595
mondobug
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Well I finally took the K50 out on the water yesterday after working on it. Runs pretty good actually. I don’t know the reason for chain-dragging sound on the phone cam. It didn’t sound like that to my ears while I went for a 40 minute cruise. But I need a shear pin now. Glad I brought the oars!

The original pin measures .182" diameter and 3/16" will not go in the hole. So what would you guys do? Enlarge the prop shaft pin hole for 3/16" – or look for .182" brass? Where would I find it?

Watch the vid to the end and see my dumb self run aground due to paying too much attention to the camera. My wife thought it was funny anyway.
Motor and boat check out – no other damage!

https://vimeo.com/139872006
September 21, 2015 at 10:56 am #24308
Tubs
Participant
A "Boathouse Repair" is one that done without having tools or the skills to do it properly.
- This reply was modified 6 years, 6 months ago by Tubs.
- This reply was modified 4 years, 2 months ago by Tubs.
September 21, 2015 at 12:55 pm #24311
Randy in Tampa
Participant
douh!
September 21, 2015 at 1:38 pm #24312
clockguy2
Participant
Since 3/16" (.1875") is so close to .182" , I would drill the prop shaft to fit common 3/16 brass rod. If you are not wanting to take the plunge, you could turn some 3/16 rod down in a lathe or chuck up a short length in a drill and sand or file to size while the stock rotates.
September 21, 2015 at 4:58 pm #24316
dave-bernard
Participant
US Member
good luck on drilling the prop shaft.
September 21, 2015 at 5:12 pm #24317
retiredoz
Participant
I’ve got some of those. Check your PM.
September 21, 2015 at 5:34 pm #24318
1957evinrude
Participant
US Member
I can say that was funny and you are okay it can happen to any of us. I need to be careful when running in the bayou as it is very narrow. Nice runner there!!!!
September 21, 2015 at 5:34 pm #24319
mini-motors
Participant
Mondo, what boat is that? I’ve been cleaning up my Dads Elgin aluminum boat, and the few glimpses I saw in your vid make me think that’s what you have.
September 22, 2015 at 12:37 am #24353
mondobug
Participant
quote Mini Motors:

Mondo, what boat is that? I’ve been cleaning up my Dads Elgin aluminum boat, and the few glimpses I saw in your vid make me think that’s what you have.

It’s a 12 foot Smokercraft semi-v, probably from the early ’70s. I’ve had it since the late ’70s.
Good luck with your Dad’s boat. I typically now use a motor my Dad had – a ’57 Evinrude Fisherman.
I was just thinking that if I bought the boat in 1978, the motor then was only 21 years old but seemed ancient to me.
Hard to believe sometimes.
September 22, 2015 at 12:47 am #24355
mondobug
Participant
quote retiredoz:

I’ve got some of those. Check your PM.

PM sent.

Thanks for all of the suggestions guys. I’ll try this first. Easy is good. If I want to use the motor before I get them, I’ll try turning down one by filing in a drill press. Come to think of it, I might be able to just file a flat on the 3/16" rod until it fits tightly – it’s that close to fitting in the hole.
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