Author Topic: Which fibreglass product to secure prop shaft into the hull?  (Read 4740 times)

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tbone

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I need to secure prop and rudder shafts into a fibreglass hull and reading online p40 seems to be the product to use. Looking for an equivalent to that available here locally.

Any ideas/advice would be appreciated.

CGAux26

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Re: Which fibreglass product to secure prop shaft into the hull?
« Reply #1 on: April 17, 2013, 14:27:32 »
I use 3M 4200 fast cure marine sealant. 

http://www.3m.com/product/information/Marine-Fast-Cure-4200-Adhesive-Sealant.html

It has the texture of putty, fills the gaps between shaft log and hull, does not run.  When it cures it remains somewhat resilient against knocks and bumps, and is very strong.

Once you open the tube, the bit of sealant under the cap will harden.  When you want to use more, poke a hole in the tube with an icepick, and squeeze.  A tube will last a long time like this.
Dave

Puffin

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Re: Which fibreglass product to secure prop shaft into the hull?
« Reply #2 on: April 17, 2013, 14:42:10 »
HI TBONE ; I use ep 11 , it is a two part paste that comes in two containers , mix parts equal .  You can use as little or as much as you like   .  It cures slow , but it sure is worth it .  You can purchase it at HOME HARDWARE . It bonds to just about anything ,and is very strong .         PUFFIN

mike_victoriabc

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Re: Which fibreglass product to secure prop shaft into the hull?
« Reply #3 on: April 17, 2013, 15:17:51 »
I use that as well - not all Home Hardware stores have it but can get it quick enough.

RB put me onto it as well as Puffin/Glen. Good stuff.

tbone

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Re: Which fibreglass product to secure prop shaft into the hull?
« Reply #4 on: April 17, 2013, 17:31:08 »
Thanks for the input. What brand is the ep11? Or is that the brand name?

Puffin

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Re: Which fibreglass product to secure prop shaft into the hull?
« Reply #5 on: April 17, 2013, 20:58:45 »
HI TBONE ; Yes that is the name of it , and it is a two part epoxy . There is a other one EP 7  or  9 ,but  EP   11 is the bettor one  . You should be able to pick it up at HOME HARDWARE store . Once you use it you will find lot's of use's for it .  It comes in two sizes , the smaller size should do you .      puffin

tbone

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Re: Which fibreglass product to secure prop shaft into the hull?
« Reply #6 on: April 17, 2013, 21:04:11 »
Thanks. I'll try and get to Home Hardware the next few days.

Tbone

Model Tug Man

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Re: Which fibreglass product to secure prop shaft into the hull?
« Reply #7 on: April 18, 2013, 03:21:06 »
I have built 3 RC tugs since 1979 and have used auto body filler on all of them. The body putty bonds well to the fiberglass and to the metal. Be sure to scuff the metal to help with mechanical bonding whichever way you elect to go. Good luck with your project.
VGJQ

mike_victoriabc

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Re: Which fibreglass product to secure prop shaft into the hull?
« Reply #8 on: April 18, 2013, 05:15:30 »
Looked at the packge - its PC-11 - they make some others similar - this is it.
Marine Epoxy - bonds fibreglass, wood, metal. You can Google it.

Puffin

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Re: Which fibreglass product to secure prop shaft into the hull?
« Reply #9 on: April 18, 2013, 10:40:54 »
THANKS  MIKE FOR THE CORRECTION , YOUR RIGHT  .   PUFFIN

tbone

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Re: Which fibreglass product to secure prop shaft into the hull?
« Reply #10 on: April 18, 2013, 19:17:40 »
Went to Home Hardware today, they didn't have PC11 but ordered some for me.  While I was there I did pick up some 'Super' epoxy of the same brand, is also waterproof when dry.

mike_victoriabc

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Re: Which fibreglass product to secure prop shaft into the hull?
« Reply #11 on: April 18, 2013, 21:06:22 »
The nice thing with PC 11 is the working time - can make adjustments, etc.
I've used the body filler but it goes off quicker and one is literally stuck with the fit if not correct.

Puffin

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Re: Which fibreglass product to secure prop shaft into the hull?
« Reply #12 on: April 18, 2013, 22:20:38 »
HI tBONE ; If you want to have finished look to it , just wet your finger and smooth it off . PRETTY much the same way you do silicon  .     PUFFIN 

tbone

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Re: Which fibreglass product to secure prop shaft into the hull?
« Reply #13 on: April 18, 2013, 22:38:26 »
I will wait to get the PC11 before I secure anything.  Someone suggested that once the prop and rudder tubes are secure in the hull, put fibreglass cloth and epoxy around it to reinforce it.  I have no doubt that any of these adhesives will be more rigid than the hull itself.

Puffin

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Re: Which fibreglass product to secure prop shaft into the hull?
« Reply #14 on: April 19, 2013, 09:08:04 »
With PC 11 you don't need it .  PUFFIN