[Rhodes22-list] John - cockpit sleeping - reinforce the lip of the seats

[R22RumRunner at aol.com]

People,you are spending way to much time on this topic. The cockpit fill in  
cushions have the proper sized plywood inserts to support any amount of weight 
 (human that is) that can be placed in the cockpit. The strips around the 
edge of  the cockpit seats are strong enough (wood or plastic) to support the 
weight.  Trust Stan and his thorough testing methods before releasing them to the 
public. 
 
Rummy
 
 
In a message dated 7/11/2008 7:24:18 A.M. Eastern Daylight Time,  
ekroposki at charter.net writes:


John,

To solve Roberts dilemma, get slow setting epoxy (need  slow or extra slow
because of ambient temperatures), small chip brush and  some Kevlar tape (
see: http://www.raka.com/Kevlar.html). 

Remove  wood strips from outside.  

Coat the inside/underside of the lip  with epoxy and apply tape to reinforce. 
Let harden but not cure, apply  second coat of epoxy and second layer of
tape.  Let harden and apply  another layer of just epoxy to smooth surface. 
Let dry and cure and  redrill the screw holes.  Reattach wood strips.

In repair jargon,  one layer of epoxy and one layer of polyester tape is
considered equivalent  to ¼” of marine plywood.  So you would be adding
equivalent of ½” of  plywood reinforcement around edge of seats.  If you are
as big a  Robert claims he is, you may want to double these instructions, and
even  add reinforcing ribs (aka stringers) under the seats.  

And still  if in doubt, you can do as previous owner of my boat did, and add
stainless  steel seat supports.  Now all you need is mosquito netting.
Previous  discussions on this forum have given many suggestions therefore.

Ed  K
Greenville, SC, USA
attachment:   http://www.nabble.com/file/p18401705/Axis%2Bof%2BEvil.jpg
Axis+of+Evil.jpg  




Robert Skinner wrote:
> 
> John,
>  
> I believe that momentary loads could easily exceed 
> 600 lbs,  given that a binary mass is in a high energy 
> oscillating state.   It may be appropriate to apply 
> stiffeners at all the points of  contact, particularly 
> if the wood is not thick and strong.
>  
> /Robert
>  ------------------------------------------------------
> John Lock  wrote:
>> 
>> At 07:06 PM 7/6/2008 -0700, John Shulick  wrote:
>> >John my concern with your modification is can that teak  strip hold up
>> under
>> >the combined weight of you and  whoever doing whatever under the stars
>> and
>> >such.  For myself and the wife this would require at least 1/4" bolts
>>  running
>> >every foot or so along the teak strip before I would  trust it. Why mark
>> up
>> >such a nice trim piece when  you are using the inflatable mattress to
>> make up
>>  >any differences in heights? If you do manage to shift the plywood  while
>> >under load then I salute you you salty old  dog!!!
>> 
>> I've been thinking about that potential  problem as well.  The load
>> would be mostly a sheering force  (downward, at right angles to the
>> fasteners) and spread fairly  evenly across about 15 linear feet of
>> trim.  So the  individual point loads would not be that great.  The
>> existing  fasteners will probably hold.  My bigger concern is if the
>>  plywood flexes too much.  It could be forced off the trim  altogether,
>> dumping you on the cockpit floor.  Fortunately I  don't see more than
>> 300lbs sleeping on there, so it may not be a  big issue.  But rigorous
>> testing will have to be  performed!
>> 
>> Cheers!
>> 
>> John  Lock
>> ~~~~~~~~~~~~~~~~~~
>> s/v Pandion - '79 Rhodes  22
>> Lake Sinclair, GA
>> ~~~~~~~~~~~~~~~~~~
>>  
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> 
> --  
> Robert Skinner  "Squirrel Haven" 
> Gorham, Maine   04038-1331
> s/v "Little Dipper" & "Edith  P."
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>  
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