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Kainer Shaft Log
Posted: Sun Aug 12, 2018 10:24 am
by RobertS
I've searched a bit but can't seem to find much on this, maybe I didn't find the right terms for this vital assembly, so feel free to let me know.
Our 1969 42ft had some leaks and the service guys tightened nuts inside and the carriage bolt heads popped through the fiberglass. Since the boat's been on land for a while, it's all dried out and I'm almost ready to get it in the water.
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This repair has been a challenge but I think it will work. Lots more pictures if anyone is having issues
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Re: Kainer Shaft Log
Posted: Sun Aug 12, 2018 10:34 am
by RobertS
Sorry, I'll repost this soon in the right place, hard to get online.
Re: Kainer Shaft Log
Posted: Sun Aug 12, 2018 9:25 pm
by Moderator
I moved it for you . Is this is a wood boat that has been glassed over ?
Re: Kainer Shaft Log
Posted: Sun Aug 12, 2018 9:40 pm
by prowlersfish
I would be using bronze myself . Is the wood solid ?
Re: Kainer Shaft Log
Posted: Mon Aug 13, 2018 6:54 pm
by RobertS
Moderator wrote: ↑Sun Aug 12, 2018 9:25 pm
I moved it for you . Is this is a wood boat that has been glassed over ?
Thanks for moving it.
Yes, its glassed over, was very well maintained for most of it's life.
Re: Kainer Shaft Log
Posted: Mon Aug 13, 2018 7:00 pm
by RobertS
prowlersfish wrote: ↑Sun Aug 12, 2018 9:40 pm
I would be using bronze myself . Is the wood solid ?
The wood is pretty solid down there. Its the upper perimeter of the hull that got soaked.
The stainless parts were available and time is passing ... Do you see any corrosion issues with this? Was told it will be fine.
Thanks.
Re: Kainer Shaft Log
Posted: Mon Aug 13, 2018 8:51 pm
by prowlersfish
RobertS wrote: ↑Mon Aug 13, 2018 7:00 pm
prowlersfish wrote: ↑Sun Aug 12, 2018 9:40 pm
I would be using bronze myself . Is the wood solid ?
The wood is pretty solid down there. Its the upper perimeter of the hull that got soaked.
The stainless parts were available and time is passing ... Do you see any corrosion issues with this? Was told it will be fine.
Thanks.
In theory yes but its done all the time . The bronze should out last the stainless .
Re: Kainer Shaft Log
Posted: Tue Aug 14, 2018 2:29 pm
by WayWeGo
With stainless, you have to worry about crevice corrosion when no air can get to the metal. Here is a quick article:
https://www.passagemaker.com/channels/s ... -corrosion
A more in-depth article by the same author in Professional Boat Builder:
http://stevedmarineconsulting.com/wp-co ... -Small.pdf
I have to agree with prowlersfish and would suggest you switch to bronze bolts. The stainless straps on the outside should be fine if they are 316L.