[C320-list] Gori-Prop buyer question - Notapropmanufacturerdebate

[Jeffrey Hare]

JeffC, 
  
That's not really true.  It depends entirely on which engine and
transmission combination you have.  For Yanmars 3gm30f, Catalina specs, 15x9
and 15x11 depending on the transmission ratio your boat came with.

The 3YM will be different, and the Perkins & Westerbekes have their own spec
from Catalina.

-JeffH


-----Original Message-----
From: Jeff Church [mailto:jjemail at comcast.net] 
Sent: Monday, September 18, 2006 6:05 PM
To: C320-List
Subject: Re: [C320-list] Gori-Prop buyer question -
Notapropmanufacturerdebate

And to further confuse matters, according to Catalina's specs the 3 blade is

15x11.

JeffC


----- Original Message ----- 
From: "Chris Holt" <oldman1030 at hotmail.com>
To: "C320-List" <c320-list at catalina320.com>; <frpoint at earthlink.net>
Sent: Monday, September 18, 2006 2:36 PM
Subject: Re: [C320-list] Gori-Prop buyer question - Not 
apropmanufacturerdebate


> Actually, my original prop is a 15 x 10.
> I believe the boats newer than mine switched to a 15 x 9 when the 
> transmission ratio changed.
>
> ----- Original Message ----- 
> From: "Len" <aqua5len at gmail.com>
> To: <frpoint at earthlink.net>; "C320-List" <c320-list at catalina320.com>
> Sent: Monday, September 18, 2006 3:31 PM
> Subject: Re: [C320-list] Gori-Prop buyer question - Not a 
> propmanufacturerdebate
>
>
>> Chris,
>>
>> As your original prop was 15 x 9, Gori 15 x 10 would be correct.
>>
>> Len
>> Aqua5  #1070
>>
>>
>> On 9/18/06, frpoint at earthlink.net <frpoint at earthlink.net> wrote:
>>>
>>> Chris, I have a gori 15 x 10 3rh and am quite pleased with it. It has 
>>> been
>>> on our boat 2 years. reverse is better, forward is better in that it
>>> accelerates faster, and faster under sail. also less weather helm.
>>>
>>> C320 #769
>>> SF bay
>>>
>>> ----- Original Message -----
>>> From: "Chris Holt" <oldman1030 at hotmail.com>
>>> To: "c320" <C320-List at catalina320.com>
>>> Sent: Monday, September 18, 2006 10:33 AM
>>> Subject: [C320-list] Gori-Prop buyer question - Not a prop
>>> manufacturerdebate
>>>
>>>
>>> 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
>>>
>>>
>>>
>>>
>>>
>>
>
>