[Rhodes22-list] Fractured stern plate.

Pat & Mary Ann pmadevig at gra.midco.net
Sun Sep 26 12:44:55 EDT 2010


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
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>
>
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