Different gear ratio = different prop, so factor that expense in unless
you want to be like driving a car stuck in 2nd gear. Also make sure you
CAN fit the correct prop for that ratio.
Joe
Coquina
On 1/1/2020 4:43 PM, Olivier Chatot via CnC-List wrote:
Hi all,
I have an interesting situation with my transmission. I would like to
share it with you and get some opinions.
I have a Yanmar 3HM35F engine with a Kanzaki KBW10 transmission. I
need to replace this transmission because it's been malfunctioning.
Someone near me has a new Kanzaki KM3P for sale. I believe the
mounting flange is the same shape and size, so physically mounting
this transmision would be possible.
However, this transmission has a different gear ratio than my old
transmission. My old transmission has a gear ratio of 2.14 (2.50 in
reverse) and the new transmission has a gear ratio of 2.61 (3.16 in
reverse). Since the gear ratio of the new transmission is higher, the
prop would turn more slowly. But I believe it would be safe.
Do you agree that it would be safe to use a transmission with a higher
gear ratio? Or, do you see something important I'm missing?
Other specs of the two transmissions are identical. Notably, the
rotation direction of the two transmissions are the same.
Any comment is greatly appreciated.
Olivier Chatot
C&C 38-3
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_______________________________________________
Thanks everyone for supporting this list with your contributions. Each and
every one is greatly appreciated. If you want to support the list - use PayPal
to send contribution -- https://www.paypal.me/stumurray
