[Rhodes22-list] How bad is my CB plate?

[The Rhodes 22 Email List]

Rummy:

I repaired mine, which was in much worse condition, and I had no skill or
experience at all when I made the repair about 15 years ago - and it has
held firm ever since with no leaks. Maybe I was just lucky.

Yes, all the broken and cracked areas need to be removed by grinding them
out and the repair needs to be done with epoxy, not polyester, against the
fibreglass substrate. You make a good point about the gelcoat surface. From
the picture I thought I was looking at the top side of the cap. It will need
to be cleaned thoroughly with solvent like Interlux 202 to ensure that there
is no trace of mould release wax and then ground or sanded down with a
coarse sanding disk to the substrate for the epoxy to adhere properly but
having done that I see no reason to worry about the bond. Hull repairs are
done all the time with epoxy and they certainly have gelcoat to contend
with. 

If the gelcoat shown in the picture  is on the inside of the flange then it
will need to be cleaned and ground/sanded the full length before the epoxy
mix is used to create a new flat surface so this is something Brooks needs
to be cognizant of and I am glad you raised the matter. Grinding the gelcoat
off will leave the surface rough and uneven and I agree that no one can sand
the flange perfectly flat, but that was the point of moulding a new flat
surface using epoxy and colloidal silica filler.

Even if Brooks buys a new cap I expect that he might still need to effect
repairs on that if any of the holes are misaligned. That seems like a lot of
expense to me but everyone needs to consider what they want to tackle and
can afford.

Graham 


-----Original Message-----
From: rhodes22-list-bounces at rhodes22.org
[mailto:rhodes22-list-bounces at rhodes22.org] On Behalf Of The Rhodes 22 Email
List
Sent: January-18-15 7:44 PM
To: rhodes22-list at rhodes22.org
Subject: Re: [Rhodes22-list] How bad is my CB plate?

Graham,
You really need to look closer at his photos. This cap has gel coat.  
Fiberglass does not adhere to gel coat. The areas around the holes have been
compressed and has damaged the glass and has caused total de lamination.
Simple  glass work this is not. I downloaded the photos to my computer and
then zoomed  in on them. The detail tells me this is a real mess. I will
guarantee that this  cap cannot be repaired with your method. You will have
to remove all the broken  glass and then be able to sand everything
perfectly flat. I certainly don't have  that ability and I've been repairing
and building boats most of my life and I've  been in several R22 centerboard
trunks.
 
Rummy
 
 
In a message dated 1/18/2015 3:43:27 P.M. Eastern Standard Time,
rhodes22-list at rhodes22.org writes:

The nice  thing about fibreglass is that it is really easy to repair -
especially  were a perfect finish is not at stake. Just make sure you remove
all of the  broken bits and any cracks and taper the area around the hole.
Resin will  not penetrate cracks sufficiently to make a strong bond. There
are lots of  YouTube videos about repairing fibreglass that should be very
helpful.  

Here is a video that should make it all  clear:
https://www.youtube.com/watch?v=i9hfpOCnzEs 

Don't despair,  it reall isn't all that difficult and is well within the
ability of just  about anyone. If you screw it up, just do it again.

Graham  



-----Original Message-----
From:  rhodes22-list-bounces at rhodes22.org
[mailto:rhodes22-list-bounces at rhodes22.org]  On Behalf Of The Rhodes 22
Email List
Sent: January-18-15 3:28 PM
To:  rhodes22-list at rhodes22.org
Subject: Re: [Rhodes22-list] How bad is my CB  plate?

Thanks Chris,

It's already got the bolts/nuts so I'm  stuck with trying Graham's ideas for
repair. 

Sigh, 

Brooks  Bridges
1986/2006 R22
Cambridge, MD



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