Joel,
I worked this same issue with Calypso's 3 blade MAX prop recently. Calypso spent a few years slightly over pitched (1 setting). It was great in flat water but lacked the ability to generate full HP when powering into a bigger wind and seas. Before going around Vancouver Island I dropped the pitch 1 setting. The reduced pitch allowed Calypso's Perkins 4-108 to hit full RPM when powering in rough conditions. I saw this as a safety issue in case we were caught in rough seas, lee shore on the west side of the island. I have not noticed a change in fuel consumption, just slightly higher RPM at when powering at cruise speed in flat water. Back in the 90's I did some Hawaii deliveries on a boat with an early in the water adjustable pitch MAX prop. You were able to dive under the boat and turn a ring to raise and lower the pitch. Once offshore we increased the pitch to allow better "fuel mileage" when powering in light air. The concept worked well but I wouldn't use/need it around the local waters. Martin Calypso 1971 C&C 43 Seattle ________________________________ From: CnC-List [[email protected]] on behalf of Joel Aronson [[email protected]] Sent: Sunday, January 12, 2014 8:25 AM To: [email protected] Subject: Stus-List 35/3 MaxProp All, The manual form my 2 blade max prop indicates that the pitch was reduced from 16 to 14 to 12 degrees over the years (last changed in 1997). I'm about to send mine in for service (hopefully not for the first time since 1997), and was wondering if 12 degrees sounds right. I should have a report on the cutlass bearing removal in the next day or so. Thanks Joel 35/3 Annapolis -- Joel 301 541 8551
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