[C320-list] Club Racing the C320

[Chris Holt]

That was what I had thought also.  I also did not experience any perceived 
change of my tach readings after the installation.  I have a 1997 with a 3GM 
motor.

Bruce,  maybe you experienced this because of a different setup on the 3YM 
engines.

Chris

----- Original Message -----
From: "Scott Thompson" <sthompson at toad.net>
To: "C320-List" <c320-list at catalina320.com>
Sent: Sunday, August 26, 2007 7:09 PM
Subject: Re: [C320-list] Club Racing the C320

>I don't know about the newer or older boats, but on my 1999 boat there is 
>no need to recalibrate the tach when switching alternators.  That's because 
>on the Yanmar 3GM series of engines, the tachometer reading comes from a 
>sensor in the flywheel housing that counts the flywheel teeth as they 
>rotate past.  In these engines tachometer calibration has nothing to do 
>with the alternator.
>
> Scott
>
> brucestanley wrote:
>> Hi Stephen
>>
>> re Kiwi Prop and Engine Revs
>>
>> Fantastic Lady's 3YM30 cruises at 2100 to 2900 rpm.
>> Depending on tide/wind, this delivers 4+++ to 6+ knotts.
>> Occasionally I advance the Revs to 3000 and 3300rpm.
>> Sometimes to 3500++RPM for only a few minutes.
>> Revs are a bit of a lottery, in that one hopes the Catalina Tach is 
>> calibrated accurately.
>> I am reasonably sure they are close to correct on Fantastic Lady.
>> Note: if you change your alternator you have to make a change at the 
>> Tachometer.
>> I have an 80amp Hitach Alternator and have made this change.
>>
>> You must be able to Rev to 3600RPM (Yanmar's requirements).
>>
>> Hope this helps
>>
>> Bruce Stanley
>> C320  #1084 Fantastic Lady / Sydney Australia
>>
>> ----- Original Message ----- From: "Stephen Cox" <scox at timmin.com>
>> To: "'brucestanley'" <brucestanley at optusnet.com.au>
>> Sent: Thursday, August 23, 2007 1:30 PM
>> Subject: RE: [C320-list] Club Racing the C320
>>
>>
>>> Thanks Bruce.
>>>
>>> What revs can you get your motor up to with this prop?
>>>
>>> Stephen Cox
>>> Canberra
>>>
>>>> -----Original Message-----
>>>> From: c320-list-bounces at catalina320.com
>>>> [mailto:c320-list-bounces at catalina320.com] On Behalf Of brucestanley
>>>> Sent: Thursday, 23 August 2007 8:20 AM
>>>> To: C320-List
>>>> Subject: Re: [C320-list] Club Racing the C320
>>>>
>>>> Stephen
>>>>
>>>> My Kiwi prop is 16.5"
>>>> and The factory has set the angle at 22 degrees.
>>>> This pitch setting of 22degrees is based on the engine you have.
>>>> Mine is the Yanmar 3YM30.
>>>>
>>>> Bruce Stanley
>>>> C320  #1084 Fantastic Lady / Sydney Australia
>>>>
>>>
>>>
>>
>>
>
>