[C320-list] Club Racing the C320

[Scott Thompson]

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
>>>
>>
>>
> 
>