I recommend contacting PYI, Inc. and asking for assistance. Be sure to have your MAX prop owner's manual or obtain another from PYI (often downloadable from their web site). The manual will have a chart to indicate what the prop is set at now and which way to go to reduce pitch.
I have changed the pitch several times on Calypso's 3 blade MAX prop. It is easy to do when hauled out. The hard part is getting it just right. The guys at PYI will be able to give a good starting point after you tell them what engine and reduction gear you have. After intentially over pitching Calypso's prop by 10% for 10 years (for longer trips in calmer PNW waters) I "downshifted" to 10% under pitched to be sure our Perkins 4-108 could reach max RPM when motoring into wind and waves. We were planning a trip around Vancouver Island. The conditions on the west side of the island can be boisterous and I wanted the extra safety factor of being able to power into offshore wind and wave. I have not noticed any increase in fuel consumption at normal cruising speed but the engine is spinning faster if I push towards hull speed. The lower pitch accomplished what I wanted in regards to powering into bigger wind and seas. Martin Calypso 1971 C&C 43 Seattle ________________________________ From: CnC-List [cnc-list-boun...@cnc-list.com] on behalf of Rex & Jennifer Delay via CnC-List [cnc-list@cnc-list.com] Sent: Saturday, January 03, 2015 10:33 AM To: cnc-list@cnc-list.com Subject: Stus-List Max Prop We have a new to us C&C 41 with a Max prop which is severely overpitched. Does anyone know the correct settings for when I haul it? Rex & Jennifer Delay www. Ghostlake.com<http://www.ghostlake.com/> www.ghostlakesailing.com<http://www.ghostlakesailing.com>
_______________________________________________ This List is provided by the C&C Photo Album. Please donate to the C&C Photo Album to keep this list free for all subscribers. Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
