Hi Martin, Thanks for your detailed response regarding MaxProp and PYI. Great advice as always. It's the first time I've heard of changing the prop pitch for conditions. Did that work out for you? Was it worth the trouble?
I'm still looking for "actual settings" by owners with a C&C 34/36, two blade 17" prop with a 2.6:1 reduction. I'm trying to help a friend (who just bought the prop) avoid trial and error. Chuck > On 12/27/2020 9:29 PM Martin DeYoung via CnC-List <cnc-list@cnc-list.com> > wrote: > > > > Chuck, > > > > I have used MAX Props since the mid 80’s including multiple Hawaii > crossings. (Full disclosure, I have known Frederic Laffitte one of PYI’s > owners since before PYI was a company and have sailed over 20K offshore miles > with him.) > > > > I echo the comments regarding PYI’s recommendations, especially as a best > starting point. Fred Hutchinson has been serving PYI’s MAX Prop customers > for a very long time. I have been at PYI and been able to observe their > customer service commitment first hand. Last time I was there it looked like > the next generation was beginning to “learn the ropes” from Frederic and the > other owner/managers so us MAX Prop users should have them as a resource for > a long time. > > > > For Calypso’s 3 blade MAX Prop and on other boats I have used several > different pitch settings. For long off shore voyages I have intentionally > over pitched the prop (just a little) to reduce engine RPM when motoring in > calm (NE Pacific high) conditions. For our trip on Calypso around Vancouver > Island I slightly under pitched the prop to allow better power (higher engine > revs) for “punching” into head seas and wind. > > > > If you do not hear from someone with your same boat and power setup, > using the PYI recommendation for your first time underway then looking for > the usual signs of over/under pitch may be the best compromise. When I was > experimenting with Calypso’s prop pitch I had a deal with the Travel Lift > operator that he would leave the slings down long enough for me to perform a > “hot lap” and check the performance. I got away with this twice before > settling on my best 2 options. > > > > Happy New Year and stay well, > > > > Martin DeYoung > > Calypso > > 1971 C&C 43 > > Seattle/Port Ludlow > > > > Hi guys, > Tables are great, but actual settings are better. > I hope someone else with a 36 footer and a Yanmar 3GM30F w 2.6:1 > reduction and a 17" two blade MaxProp will share his actual setting number to > help us. > > Thanks to those who responded already. > Chuck S > > > > Martin DeYoung > > > > Thanks to all of the subscribers that contributed to the list to help > with the costs involved. If you want to show your support to the list - use > PayPal to send contribution -- https://www.paypal.me/stumurray Thanks - Stu >
Thanks to all of the subscribers that contributed to the list to help with the costs involved. If you want to show your support to the list - use PayPal to send contribution -- https://www.paypal.me/stumurray Thanks - Stu
