Olivier
Would definitely NOT recommend a transmission with different gearing. Others have chimed in with reasons why. We had ours rebuilt a few years ago and has been perfect ever since. From what we can tell, there is an art to these items so experience is key. We initially used a local mechanic with great transmission credentials with poor results. We discovered Rick Neary, had great conversations, shipped it to him via USPS parcel post and had it back again within 10 days. He was the technician who actually did all the Yanmar transmission rebuilds / repairs for Mack Boring, the Yanmar distributor until they stopped offering this service a few years ago so went out on his own. Pricing very reasonable – parts are the biggest expense. Rick Neary East Coast Marine Transmissions 253 Vineyard Ave South Amboy, NJ 08879 732-991-0694 eastcoastmarinetransmiss...@gmail.com Not an endorsement per se- just one satisfied customer’s experience. If you call please tell him we said hello John and Maryann Legacy III 1982 C&C 34 Noank, CT From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Olivier Chatot via CnC-List Sent: Wednesday, January 01, 2020 4:43 PM To: cnc-list@cnc-list.com Cc: Olivier Chatot Subject: Stus-List Fitting transmission with different gear ratio 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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