I have a practical, uh, empirical experiment going on right now in this
area. I have the Atomic 4 still in place, but added the 9.8 Nissan on a
bracket in the last season. This spring I will take out the Atomic 4.
She is down about three-quarters of an inch at the stern with the addition
of the outboard now.
BTW, the outboard is about 90 lbs. and the bracket is not negligible, at
least the heavy duty all-stainless one I bought. I believe it weighs
somewhere around 30 lbs. including the heavy rails that go inside the
transom. The bracket stands the outboard off about six to eight inches from
the transom, so you would have to increase your moment-arm by that amount if
you have not accounted for it.
--Dave Shugarts
C-27 #4866 Cahoots (1981)
SR, A4, Outboard, Tiller, Dinette
Newtown (Housatonic River), CT
E-mail: [EMAIL PROTECTED]
Website: http://www.BoatDiddly.com
~~~~_/)~~~~~~~~~~~~(\_~~~~
~~~~~ (\_~~~~
On 12/21/07 2:35 PM, "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> wrote:
> That's what I said, but got yelled at.
>
> And the pedestal DOES further aggravate the issue.
>
> Tommy,
> very sensitive for the holidays
>
> In a message dated 12/21/2007 2:14:19 P.M. Eastern Standard Time,
> [EMAIL PROTECTED] writes:
>>
>> For a catalina 27 at even keel at DWL:
>>
>> The weight required to sink a catalina 1" (aka TP1") is approx 0.26 ltons,
>> or 600lbs
>> The moment required to change trim 1" is approximately 650 ft lbs
>> The increase in wetted surface for every 1" of immersion is 4.5 sq ft, or
>> about 3%
>> The LCF is 1.2ft aft of amidships, or slightly less than 10' forward of the
>> transom
>>
>> an 80lb 9.9hp OMC on the transom will generate 1.2" of trim by the stern
>> a 245lb atomic 4 located 5.5ft forward of the transom will generate 2" of
>> trim by the stern and sink the boat about 0.25 " further than the OB
>
>
>
>
>
> See AOL's top rated recipes
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> <http://body.aol.com/fitness/winter-exercise?NCID=aoltop00030000000003> for
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>
