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 Snapped shaft and other things 
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Joined: Sun Oct 28, 2012 12:28 am
Posts: 1903
Location: Southland, New Zealand
Post Snapped shaft and other things
The duck season in NZ is finally happening, we got it knocked back 3 weeks with this whole corona scam. Waituna where I shoot is low, like 12 inches low soge only option I have this year is the long tail.
Anyway I have had a 24hp honda with a fresh rebuild sitting in my garage for years now. And it's the right time to fit it up, 4 days out from opening.
I cracked the bolts of the old motor and it slid forward.....but the shaft stayed with it. Why???


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We had a lot of hunters from down under. All a bunch of great guys that liked to drink, root, and shoot shit in the dark. My kind of people.


Tue May 19, 2020 5:14 pm
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Joined: Mon Dec 31, 2012 11:07 pm
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Location: West Monroe, LA
Post Re: Snapped shaft and other things
Wow. That sucks.

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Tue May 19, 2020 5:19 pm
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Joined: Sun Oct 28, 2012 12:28 am
Posts: 1903
Location: Southland, New Zealand
Post Re: Snapped shaft and other things
I was lucky and managed to get a machine shop to put a key way and a thread on some 316 stainless in less than 24h.
If anything it's a bit of a sign of the future as businesses are either busy or dead quiet.

Would still like to know why the last one snapped if anybody has an idea.

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We had a lot of hunters from down under. All a bunch of great guys that liked to drink, root, and shoot shit in the dark. My kind of people.


Wed May 20, 2020 11:47 am
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Joined: Mon Dec 31, 2012 11:07 pm
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Location: West Monroe, LA
Post Re: Snapped shaft and other things
Global Warming.

Seriously though, misalinged shaft putting stress and excess heat at that point and instead of the bearing giving some and failing, the shaft took the fatigue and failed. Does that bearing rotate smooth and easy, or is it bound up some? Or maybe there was already a crack or weakness at that exact spot in the shaft, impact with a log or something caused it to weaken further and it broke from continuous vibration when running. Maybe something else entirely. Just a couple ideas from looking at one picture of it on the internet.

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Wed May 20, 2020 12:33 pm
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MMT 1000 Club
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Joined: Sun Oct 28, 2012 12:28 am
Posts: 1903
Location: Southland, New Zealand
Post Re: Snapped shaft and other things
Russ wrote:
Global Warming.

Seriously though, misalinged shaft putting stress and excess heat at that point and instead of the bearing giving some and failing, the shaft took the fatigue and failed. Does that bearing rotate smooth and easy, or is it bound up some? Or maybe there was already a crack or weakness at that exact spot in the shaft, impact with a log or something caused it to weaken further and it broke from continuous vibration when running. Maybe something else entirely. Just a couple ideas from looking at one picture of it on the internet.

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Yes in think you are spot on with misalignment.
I actually ran Jake at backwater last night after a couple of cold snacks and he was incredibly helpful as usual but he sent me a link to a video hes made on how to get it spot on.
You all are lucky to have such great service from company's and people like that.

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We had a lot of hunters from down under. All a bunch of great guys that liked to drink, root, and shoot shit in the dark. My kind of people.


Thu May 21, 2020 5:03 pm
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Joined: Mon Jan 09, 2012 8:56 pm
Posts: 2522
Location: Minnesota
Post Re: Snapped shaft and other things
Walkers Bay Synd wrote:
Russ wrote:
Global Warming.

Seriously though, misalinged shaft putting stress and excess heat at that point and instead of the bearing giving some and failing, the shaft took the fatigue and failed. Does that bearing rotate smooth and easy, or is it bound up some? Or maybe there was already a crack or weakness at that exact spot in the shaft, impact with a log or something caused it to weaken further and it broke from continuous vibration when running. Maybe something else entirely. Just a couple ideas from looking at one picture of it on the internet.

Sent from my SM-G970U using Tapatalk



Yes in think you are spot on with misalignment.
I actually ran Jake at backwater last night after a couple of cold snacks and he was incredibly helpful as usual but he sent me a link to a video hes made on how to get it spot on.
You all are lucky to have such great service from company's and people like that.


Which Backwater frame is it and how old?

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Thu May 21, 2020 8:34 pm
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