[C320-list] Gearbox Reduction

[Colin Evans]

Bingo !!!!!
I cleaned the plate and rubbed some chalk over it , then shone a light from
the farside and 2.21 was just legible
Thanks Bruce. 

*************************
Regards
Colin Evans
Watermark 
2000 C320 # 774 
Lake Macquarie, Australia

 

-----Original Message-----
From: c320-list-bounces at lists.catalina320.com
[mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of Bruce Heyman
Sent: Saturday, 4 May 2013 9:21 AM
To: C320-List at Catalina320.com
Cc: c320-list at lists.catalina320.com
Subject: Re: [C320-list] Gearbox Reduction

Colin;
I'm actually down on the boat finishing up my 12 year service.  I cleaned up
the bell housing and the transmission and repainted it.  On my inspection
plate on the bell housing the word Ratio is cast into the part.  Right after
that  2.21 is very lightly stamped onto the part.  If I had not just cleaned
it all up and painted it I doubt it would have been readable.
Best,
Bruce

Bruce Heyman
(949) 289-8400

Bruce Heyman <bruceheyman at cox.net> wrote:

>Colin,
>A hand written note in my manual says that the gear ratio is 2.21.  We have
a 2000 model.
>Good luck.
>Bruce
>
>Bruce Heyman
>(949) 289-8400
>
>Colin Evans <twosailors at bigpond.com> wrote:
>
>>We have a 2000 model Catalina 320 with a Yanmar 3GM30F engine and a
Kanzaki
>>gearbox. 
>>I wish to change the propeller and the suppliers require the reduction
>>ratio.
>>The plate on the gearbox has model KM2P and  Yanmar  indicates that there
>>should be another letter either S or G following, which will nominaate the
>>reduction of 2.21 or 2.62.
>>Also on the plate are the words "Gearbox Ratio", but no information
>>following.
>>How can I determine the reduction ratio.  Were they all 2.62 ?
>>*************************
>>Regards
>>Colin Evans
>>Watermark 
>>2000 C320 # 774 
>>Lake Macquarie, Australia