Prop shaft sheared

Babyfurn

Recruit
Joined
Nov 27, 2006
Messages
5
We duck hunt shallow water with a 25 hp 4 stroke bigfoot on a 13 foot boat. Second day out and we fount a submerged tree. It took out the prop, nuts shaft, everything gone instantly. 500 bucks later, the parts dealer says its a "shaft designed to shear".

I would like to have a shear pin, not a shear shaft. Is this guy off his rocker?

How can I make a prop with shear pin????
 

Laddies

Banned
Joined
Sep 10, 2004
Messages
12,218
Re: Prop shaft sheared

The shaft it not designed to shear there is a slip hub in the prop that slips in most cases
 

Babyfurn

Recruit
Joined
Nov 27, 2006
Messages
5
Re: Prop shaft sheared

Thanks for the response, it must have been a pretty strong contact. Amazing, there were no signs of hitting the skeg below, I guess it must have caught something from the side. A clean 90 degree break, it looks so clean and perfect it seems like it could have been designed to snap. I guess I will get a trolling motor for the emergencies of loosing the prop and getting caught way out in the everglades. An airboat is the other solution but I am not in favor of airboats. I can only imagine the eggs and nests of so many creatures getting destroyed when they tend to run the boats anywhere they want to go.
 

DHPMARINE

Captain
Joined
Dec 16, 2003
Messages
3,688
Re: Prop shaft sheared

While the shaft is not meant to shear,it is made of two different materials,and if hit hard enough will break right about at the propshaft seal area.

DHP
 

eli_lilly

Chief Petty Officer
Joined
Dec 22, 2005
Messages
435
Re: Prop shaft sheared


Oh no, is this really in the glades? I bought a brand new prop from iboats and tore it up out there on the first day when I hit something submerged (I think it was an alligator). It bent the prop fins back at a 90 degree angle.

I've never been back there since... and I ground out all the time and have never messed my prop up like that. I don't know what is in that water but its not for me...

-E
 

alana

Seaman
Joined
Feb 3, 2006
Messages
71
Re: Prop shaft sheared

why not fit one of those gards that go around the prop
 

Outboard

Cadet
Joined
Dec 1, 2006
Messages
11
Re: Prop shaft sheared

Indeed its in the everglades, a beautiful area if you can get in. Airboat has a huge advantage but I don't like the idea of plowing your own trac wherever you want to go. Sounds like ultimate freedom but if we all did it, I guess we wouldn't have much nature left. So many insect eggs, snakes, turtles bunnies, gators etc. etc, I guess you get the picture. No doubt the airboats are fun and you can really go anywhere. I went on a guided hunt a few weeks back, the guide dropped the boat up in the parking lot, I thought he was out of his mind. He told us to hop in, he fired up the motor and off we went accross the gravel and all. He avoided the ramp and decided to drop straight into the deep sawgrass and pond which looked like it had never had an intruder, it really sucked. Plowing a track across turtle grass is not so good either so I guess we all need to be smart where we go.

Gators, indeed. I am a California boy and now living in Florida 15 years and I am still impressed each time I see one of these dinasaures. We were poling over some shallows the other day and I was going to push off the log to avoid getting stuck but it was no log at all, they can sure move fast when needed.
 

j_martin

Admiral
Joined
Sep 22, 2006
Messages
7,474
Re: Prop shaft sheared

alana said:
why not fit one of those gards that go around the prop

They only work for manatees, not aligators.8)
 
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