If you are going to use aluminum, remember that salt water will attack it  
very quickly. I would give it several coats of clear lacquer or some other  
coating to protect it from corrosion. The corrosion won't affect it's  
strength for many years, it's just a visual thing.
 
Rummy
 
 
In a message dated 9/26/2010 12:46:15 P.M. Eastern Daylight Time,  
pmadevig at gra.midco.net writes:

Stan  suggested I use aluminum for the replacement of the fractured stern 
plate,  so that's what I'll use.  Should be ready by spring.
Pat----- Original  Message ----- 
From: <R22RumRunner at aol.com>
To:  <rhodes22-list at rhodes22.org>
Sent: Sunday, September 26, 2010 7:52  AM
Subject: Re: [Rhodes22-list] Fractured stern plate.

>I  recently ordered some UHMW poly ethylene from Norva Plastics. I told  
them
> what I needed, what it was going to be used for and they cut the  piece to
> size  and shipped it to me very quickly and at a  reasonable price.
>
> Rummy
>
>
> In a message  dated 9/23/2010 8:13:11 P.M. Eastern Daylight Time,
>  sprocket80 at mail.com writes:
>
>
>
>
>  Pat,
>
> If this is not a warranty  repair by GB and you are  going to fix it
> yourself, I would recommend NorVa  Plastics in  Norfolk, Virginia.
> http://www.norvaplastics.com/
>
>  You  can send them a sketch, the old part, or if you are really  computer
> savvy, a  CAD file.  The will make the part from  the material of your 
> choosing
> (UHMWPE?) and ship it to  you.
>
> Todd   T.
>
>
>
>
>
>
> -----Original  Message-----
> From: Pat &  Mary Ann  <pmadevig at gra.midco.net>
> To: The Rhodes 22 Email List   <rhodes22-list at rhodes22.org>
> Sent: Wed, Sep 22, 2010 9:56   pm
> Subject: Re: [Rhodes22-list] Fractured stern   plate.
>
>
> Mike
> Thanks for the thoughtful  message.  I'm planing  to have the problem 
plate
> replicated  over the winter so it's ready to go  in the spring.
> Pat.
>  ----- Original Message ----- 
> From: "Michael D.  Weisner"  <mweisner at ebsmed.com>
> To: "The Rhodes 22 Email List"   <rhodes22-list at rhodes22.org>
> Sent: Wednesday, September 22,  2010  10:09 AM
> Subject: Re: [Rhodes22-list] Fractured stern   plate.
>
>
>> Hi Pat,
>>
>> As an  engineer, the problem  appears to be caused by one (or more)
>  problems
>> as  follows:
>>    1.   Motor weight exceeds design  specification
>>   2.    Live load (motor, waves,  wind, etc.) exceeds  design
> specification
>>    3.      Improper structural material formulation or specification
>>   4.    Damage or abuse (backed into fixed object,  collision,  etc.
>>    5.    Storm  damage
>>
>> Since I  must assume that Stan built the  motor lift and provided the
>>  engine,
>> one must  assume that #1 is out.  As good as Stan is,  engineers do  
revise
>> their designs to correct "oversights."  It is   entirely possible that as
>> the
>> 4-cycle electric start  engine  weights continue to increase, the design 
>>  of
>> the lift may need to be  redesigned (#1, #2 &  #3.)  An aluminum plate
> would
>> seem to  indicate  that such a process has already been started at  GBI.
>>
>>  If designed properly, you should not be  capable of damaging the lift  
by
>> having "raised the Yamaha  too high."  IMHO, the only time that  you 
could
>>  be
>> at fault would be in cases like   #4.
>>
>> Is it safe to sail?  Well, make sure that  your safety  chain is in good
>> shape
>> and of the  correct length so that you  do not lose the motor should the
>>  plate
>> fail.  You could  also have difficulty raising or  lowering the motor if
> the
>> damage  affects the  mechanism.  Also, be careful since the cracked
>  material
>> can be very sharp.
>>
>>  Mike
>> s/v  Shanghai'd Summer ('81)
>> Nissequogue  River, NY
>>
>> From:  "Pat & Mary Ann" Tuesday,  September 21, 2010 9:07 PM
>>> Hello  all,
>>>  This summer I notied a progresse, increasing series of cracks  in  the
>>> stern
>>> plate.  I asked Stan about it  and  he thought it would be safe to sail
> til
>>>  Labor Day, then pull the  plate and replace it with an aluminum  
replica.
>>> Has anyone had a  similar problem?  I  wonder if it is because I raised
> the
>>>  Yamaha too  high.  Any other suggestions for repair or   replacement?
>>> Pat Devig
>>> -------------- next  part  --------------
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>>>
>  
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>
>
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