[Rhodes22-list] deck shape

[Graham Stewart]

bob:

Interesting. The deck seems rock solid to me as well - being cored with at
least 1" of plywood. I can't see any sign of sag. I am  thinking that the
drop occurred because the boat was spreading. The hull below the gunnels is
very then and flexible.I had also removed the rivets at the hull deck joint
which might have also allowed for some movement. Now the joint is secured
with fibreglass, rivets, bolts and screws so it is pretty solid and unlikely
to have any play.  I will try your hi-tech suggestion with my back as a lift
as it is more than unlikely that I could do any damage that way. If it looks
like it isn't budging I will shorten the compression post. As usual, I
appreciate your feedback.

As a precautionary tale to others who might need to remove their compression
post, it might be wise to prop up the cabin top first.

Graham Stewart
Agile. R22, 1976
Kingston Ontario Canada




-----Original Message-----
From: Rhodes22-list [mailto:rhodes22-list-bounces at rhodes22.org] On Behalf Of
Goodness
Sent: August 21, 2016 9:30 PM
To: The Rhodes 22 Email List
Subject: Re: [Rhodes22-list] deck shape

Graham:  Being the foolish and impatient type, i used my back, stood up
under the top pressing my back into it and put a 4x4 post with a cloth over
the top under it to support then tapped the compression post and bulkhead in
place with a mallet.  Then i tapped out the 4x4 and the compression post was
firmly in place.  Right or wrong, I didnt give it 2 minutes of though!  I
was certain i had the base at the right height as i had made templates
before i deconstructed the rotten base.  I just assumed the wide span of the
fiberglass head liner was heavy and sagged.  My deck always remained rock
solid.
Bob (palatka)
> On Aug 21, 2016, at 9:08 AM, Graham Stewart <gstewart8 at cogeco.ca> wrote:
> 
> BoB:
> 
> Thanks for the feedback. That is very helpful.
> Yes, I had unstepped the mast and there was no load on the deck - not 
> even snow. I made the new bulkhead pieces using the old ones as 
> templates and placed them according to the fibreglass stubs that were 
> in place to hold the old pieces. Everything seems to be coming 
> together properly so I am pretty sure that the compression post base 
> is in the correct place. The only difference is that the old base had 
> been distorting under the force of the compression post over the years 
> so the new piece corrected for that accounting for perhaps as much as 1/2
inch in the drop of the cabin top.
> What did you use to raise the cabin top in order to reinsert the 
> compression post? How much force did it take?
> Thanks again,
> 
> 
> Graham Stewart
> Agile. R22, 1976
> Kingston Ontario Canada
> 
> 
> 
> 
> -----Original Message-----
> From: Rhodes22-list [mailto:rhodes22-list-bounces at rhodes22.org] On 
> Behalf Of Goodness
> Sent: August 20, 2016 11:09 PM
> To: The Rhodes 22 Email List
> Subject: Re: [Rhodes22-list] deck shape
> 
> Graham:  i assume that your mast has remained unstepped during your 
> restoration.
> Remember you have an inner hull so your cabin top has two layers. The 
> center of my cabin top interior dropped an inch immediately upon 
> removing my compression post.  I had the floor bulkhead replaced 
> within a week but had to lift the inner lining up to get the 
> compression post to fit back into place.  It is nice and tight and the 
> deck is level and firm.  Fiberglass is very flexible and strong. Make 
> sure your base for the post is at the proper height however.  Do you 
> have an original bulkehad as well?  That helps you guage that the
compression post is in the right position.
> Good luck!
> 
> Bob (palatka)
> 
>> On Aug 20, 2016, at 7:25 PM, Graham Stewart <gstewart8 at cogeco.ca> wrote:
>> 
>> I am finally at the point in my restoration of Agile where am 
>> installing the compression post and main bulkhead. However, it 
>> appears that the cabin top has dropped by a full inch. I am left with 
>> the choice of either jacking up the deck so that the compression post 
>> fits or cutting the post back to fit the space. Does anyone know what 
>> the implications might be if I gradually jack up the cabin top? Might 
>> I crack the deck? Obviously I should have supported the cabin top 
>> when I removed the post but I didn't think it would deform when there 
>> was no load
> on it.
>> 
>> If anyone has any suggestions I would appreciate it. Otherwise I will 
>> try to rais the top very gradually and if that seems to require more 
>> than a moderate force I will live with the missing inch and tell 
>> myself that I am still growing.
>> 
>> 
>> Graham Stewart
>> Agile. R22, 1976
>> Kingston Ontario Canada
>> 
>> 
>> 
>> 
>> 
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