[Rhodes22-list] Hull strengthening

Fri Dec 20 20:44:59 EST 2013

Rummy:
Thanks for that information and advice. I was thinking that I might add a
few layers of glass on the inside - not the outside of the hull. Presumably
it would be much easier to do and I would, presumably, get a better bond on
the inside where I could rough up the old surface pretty thoroughly. It may
also be that once I reinstall the main bulkhead, that alone will strengthen
the hull sufficiently as it sits very close to where the indentation was. I
don't want to do this work if it serves no real purpose, or creates other
problems,  so your advice and experience  is welcome.

Graham 

-----Original Message-----
From: rhodes22-list-bounces at rhodes22.org
[mailto:rhodes22-list-bounces at rhodes22.org] On Behalf Of
R22RumRunner at aol.com
Sent: December-20-13 3:54 PM
To: rhodes22-list at rhodes22.org
Subject: Re: [Rhodes22-list] Hull strengthening

Graham,
What you are describing is what is called oil canning. It's been discussed
many times over the years and the consensus was to not add additional
fiberglass  and weight to the hull. It's not a big deal once you get it off
the trailer. It  simply goes away. A couple of years ago a Rhodes owner had
his hull sand blasted  in preparation for a new bottom coat and
anti-fouling. In the process they  discovered that this hull had been
glassed over as you are thinking of doing. It  delaminated and they tore the
whole mess off the boat. It added hours of  needless repairs and cost to the
project.

Rummy

In a message dated 12/20/2013 2:06:01 P.M. Eastern Standard Time,
gstewart8 at cogeco.ca writes:

Lou  plans to strengthen his hull and I was considering the same since I
have the interior of my 76 completely stripped out. It seems like the
opportune time to do so if it is worthwhile and if I had some idea of what
was needed.
It would only be feasible to do the main cabin and possible the  forward
area if I remove the foam. I am not sure how the foam is held in  place and
how I would reattach it.

Has anyone done this or do they  have any technical thoughts about how many
layers of fibreglass should be  added? Is it really worth the effort?

The reasons I am thinking about  this is that I understand that later boats
have a heavier layup and I  assume there was a good reason for that and
because the hull seems overly  flexible and has taken a dent where the
forward starboard strut of the  trailer presses on the hull. I jacked the
boat up about 2 years ago and  most of the dent has come out, but I thought
that some strengthening -  perhaps with strengthening ribs of some sort
might be prevent the  impression from forming again when the boat is lowered
back on the  bunk.

I would value thought from those who might know more about  whether and/or
how to proceed.

-----Original  Message-----
From:  rhodes22-list-bounces at rhodes22.org
[mailto:rhodes22-list-bounces at rhodes22.org]  On Behalf Of Lou Rosenberg
Sent: December-20-13 1:24 PM
To:  rhodes22-list at rhodes22.org
Subject: Re: [Rhodes22-list] Centerboard  replacement.

James,

I renovated my '81 centerboard trunk and  mechanism.  While its a totally
different design than what you have in  front of you, I recommend trying to
re create what Stan had in that era of  R22s.   Try to create a two piece 
(cap and flange ) system with  a recessed "V" inside your trunk to hold the
pivot pin.
If for some  reason you have no access to pics of this, I can supply some
directly to  you.

I have documented my renovation in the Owner's site in the section  under
technical details I believe.
Roger Pihlaja did most of the writing  on the structural details of the
cement and glass work. I followed his  online instructions and did the job
alone. I took one year of hard labor  but it was worth it.  Since then I ve
re lined my centerboard cap and  flange with Garolite (1/4") to make a firm
seal.  I have not had any  issues since but am very curious to know how far
you took your restoration  of the hull.

I plan to add stringers under my cockpit and remove the  fwd foam to also
strengthen the glass from inside my boat.  I had a  major issue with boat
pox which resulted in small hull leaks.

Good  luck with your endeavor.

Lou Rosenberg
s/v Miracles
Mill Basin  Bklyn NY

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