Sounds wrong. We're 17X10 with the 2-blade max prop, same engine and gearbox. I would check those numbers again. Don't confuse blade angle with pitch. A 20° blade angle on the 17" prop is equivalent to a pitch of 11.6, which still sounds a little steep.
Jim Watts Paradigm Shift C&C 35 Mk III Victoria, BC On Thu, 17 Dec 2020 at 13:27, Glen Dickson <[email protected]> wrote: > Was the 22 degree pitch on the Max Prop recommended by the distributor? I > too have faith in Fred Hutchinson’s calculations. He’s always been spot on. > If someone didn’t work out that 22 degree pitch based on prop and reduction > I’d suggest it’s overpitched (as one could easily guess). > > > > Glen Dickson > > Nomad I 1990 C&C 34+ > > > > Go with whatever Fred Hutchison at PYI recommends😊 > > > > *From:* CHARLES SCHEAFFER <[email protected]> > *Sent:* December-17-20 4:56 PM > *To:* CNC boat owners, cnc-list <[email protected]> > *Subject:* Stus-List Best Pitch for 2 blade 17" Max Prop 36ft C&C > > > > Does anyone with a MaxProp know their pitch setting? We're trying to set > a two blade 17" MaxProp on a 36 ft sailboat with Yanmar 3GM30F engine w > 2.6:1 reduction? > > > > Thanks, > > Chuck Scheaffer Resolute 1989 C&C 34R Pasadena Md > > ---------- Original Message ---------- > > From: Blair Clark <[email protected]> > > To: [email protected] > > Date: 12/12/2020 2:16 PM > > Subject: deciding on proper pitch for 2 blade 17 inch Max Prop > > > > > > Hello Group, > > > > We have a 1990 C&C 34 +. > > > > Coincidence is powered by a 3GM30F Yanmar with a 1 1/8 shaft and a Kanzaki, > KM3P Mechanical gearbox. Serial no(s): 17745. Gear ratio: 2.61:1 > > > > > > I recently purchased a 2 Blade 17 inch Max Prop. It comes with a 22 degree > pitch. > > > > When I was communicating with PYI they had recommended a 2 Blade 17 inch > 20 degree pitch if I went with their new propeller. > > > > Does anyone have any thoughts/experience regarding 22 degree pitch vs 20 > degree? > > > > Thank you, > > > > Blair > > Coincidence > > 1990 C&C 34 +(902) 233-1684 > > 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
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
