[C320-list] Gori-Prop buyer question - Not a prop manufacturerdebate

[Chris Holt]

I will probably be putting my deposit down in the next couple of days so 
that I can get the boat show price if that is the cheapest I can find.  I 
plan on switching the prop over the winter, at which time I might replace my 
shaft with a SS one and replace my cutlass bearing as preventive 
maintenance.

Chris

----- Original Message ----- 
From: "Len" <aqua5len at gmail.com>
To: "C320-List" <c320-list at catalina320.com>
Sent: Monday, September 18, 2006 2:00 PM
Subject: Re: [C320-list] Gori-Prop buyer question - Not a prop 
manufacturerdebate


> Chris,
>
> Very interesting---like you, I was thinking of 15 x 12 for my 3YM30 (1 
> pitch
> over factory), so now will recheck with AB Marine before ordering.
>
> My understanding: the theory was that with the larger hub on the Gori
> there's less prop, hence 1 pitch over factory to get proper torque.  Now 
> I'm
> not sure that same pitch as factory will give proper torq/max rpms.
>
> When are you getting the Gori 3-blade?
>
> Len Krane
> Aqua5  #1070
>
>
> On 9/18/06, Chris Holt <oldman1030 at hotmail.com> wrote:
>>
>> I stopped by the AB Marine booth at the Newport boat show this last
>> weekend and talked to them about purchasing a Gori 3 blade prop.
>> I told them how we have all been discussing the proper pitch that people
>> have found based on experience so I suggested the 15x11 3 blade RH model
>> based on the "1 pitch higher than factory prop" rule.  He wrote to me 
>> today
>> and said this:
>>
>> "Based on calculations and also other C-320 owners sea trial results the
>> propeller will be a 15 x 10 x 3RH propeller."
>>
>> This surprised me as he said the 15 x 10 was found to be the ideal
>> propeller.  Does anybody have the Gori 3 blade 15 x 10?
>> I know that the some of the people who have the 15 x 11 have said they
>> can't reach max RPMs so I'm wondering if he is correct.
>>
>> BTW: I have the 3GM30.  Hull #447.
>>
>> Thanks,
>>
>> Chris Holt
>>
>>
>