Changing the Prop Shaft

LLCD · Post by **LLCD** » Wed May 30, 2012 6:45 pm

We have all heard it. BOAT= Break Out Another Thousand

The Nina Colada II broke the Prop Shaft right at very end, right where it joins with the propeller.

It broke on the way back to the dock, now my prop is sitting in the bottom of the Intercostal here in Miami.

It broke due to corrosion and barnacle build up and we didn't notice it until... well... the boat didn't move.

Sunday we are pulling it out of the water. taking out the shaft, putting in a new one, with a new prop. and seals and everything.

Hopefully nothing else breaks and that's all we have to do. (knocking on wood, fingerscrossed)

k9th · Post by **k9th** » Wed May 30, 2012 7:05 pm

Good luck & hope that is all that's wrong.

todd brinkerhoff · Post by **todd brinkerhoff** » Wed May 30, 2012 7:19 pm

It just broke without hitting something? That soundz like significant corrosion.

LLCD · Post by **LLCD** » Wed May 30, 2012 7:51 pm

Yeah, It had a crack, and in that crack barnacles started to grow in it and it broke it.

summer storm · Post by **summer storm** » Thu May 31, 2012 12:15 pm

LLCD wrote:Yeah, It had a crack, and in that crack barnacles started to grow in it and it broke it.

Welcome onboard, I think you will find that the real problem is electrolysis not corrosion. Where do you keep the boat? there are a lot of hot marinas in Miami and this is a very common problem down here. Last haul out I had to replace a shaft because of pitting due to electrolysis and a zinc that I must have thrown off. For 60 bucks Dr zinc diving (in Miami) will come to the boat and scrub the bottom and change the zincs, if needed, and let you know of any pending problems.

prowlersfish · Post by **prowlersfish** » Thu May 31, 2012 1:09 pm

A poorly installed prop or key way can break a shaft at the same place

captainmaniac · Post by **captainmaniac** » Thu May 31, 2012 7:06 pm

And you can get electrolysis from someone else or the dock power system itself... if there is an electrical problem near enough to you, the stray current in the water can find its way to you even if you have no problems of your own.

Actually, maybe that's what summer storm meant by 'hot marinas'... ??

summer storm · Post by **summer storm** » Thu May 31, 2012 8:25 pm

captainmaniac wrote:Actually, maybe that's what summer storm meant by 'hot marinas'... ??

I wish I was talking about hot girls in bikinis but It's the stray current that's making things hot down here.

LLCD · Post by **LLCD** » Thu May 31, 2012 10:06 pm

I guess my problem is having a broken shaft after sitting in "Hot Marinas" in Miami.... Geezz... Trojan Boat Forums really tell you what is wrong with you, not so much your boat...

prowlersfish · Post by **prowlersfish** » Thu May 31, 2012 10:37 pm

How about a photo of the broken shaft ?

jefflaw35 · Post by **jefflaw35** » Thu May 31, 2012 10:46 pm

LLCD wrote:I guess my problem is having a broken shaft after sitting in "Hot Marinas" in Miami.... Geezz... Trojan Boat Forums really tell you what is wrong with you, not so much your boat...

LOL you have no idea!!!

summer storm · Post by **summer storm** » Fri Jun 01, 2012 1:40 pm

LLCD wrote:I guess my problem is having a broken shaft after sitting in "Hot Marinas" in Miami.... Geezz... Trojan Boat Forums really tell you what is wrong with you, not so much your boat...

Really? I don't see anywhere in my post claiming that there is something wrong with you, nor did I tell you what was wrong with your boat. Read it again, I said "I think you will find" not, "your problem is"

The bottom line here is I was trying help you out and maybe save you some money in the future.

Remember, advice here is worth exactly what you paid for it, well, maybe Paul's is worth more but that's another story.

LLCD · Post by **LLCD** » Fri Jun 01, 2012 3:15 pm

Oh no definitively! haha I was just joking around! even though my boat breaks I have to keep a good sense of humor or else I will go crazy every time something breaks on my boat lol

But seriously, I cannot thank enough all of you guys for the tips! I can't wait for Sunday to get my baby fixed!

summer storm · Post by **summer storm** » Sat Jun 02, 2012 11:05 am

It's all good! good luck Sunday and let us know how things look

prowlersfish · Post by **prowlersfish** » Sat Jun 02, 2012 11:46 am

By posting a photo we we can give you a better idea(s) of the cause . And help keep it from happening again . If the new prop/shaft is not done right it could happen again . Installing the prop is easy and just as easy to screw up .