Word of caution-some shafts have a left hand threaded nut. It’s happened to me twice!
Joel On Mon, Oct 6, 2025 at 4:53 PM Peter W. via CnC-List <[email protected]> wrote: > I installed a max prop (2 blade) . I don’t recall the taper of shaft to > be of special note. I did have to cut off the shaft end . > But not very much. > Pete w > Siren Song > ‘90 C&C 30-2 > Irvington va > > Sent from my iPhone > > On Oct 6, 2025, at 4:41 PM, Pete Shelquist-comcast via CnC-List < > [email protected]> wrote: > > > Eddie - > Flexofold didn't ask me this when I bought mine, but that was a long time > ago. It's held up really well btw. > > Couple suggestions; You could pull the existing prop and measure the shaft > with a caliper and do the calcs. Or call martec and ask them what specs > they manufacture to. They've been around long enough to have input on > what's standard. > > Hope that helps. > ------------------------------ > *From:* ejwills1993--- via CnC-List <[email protected]> > *Sent:* Monday, October 6, 2025 3:32 PM > *To:* [email protected] <[email protected]> > *Cc:* [email protected] <[email protected]> > *Subject:* Stus-List C&C 30 Mark II - Shaft Taper? > > > Hey C&C Sailors - > > I’ll be replacing my fixed Martec prop with a folding 2-blade prop this > winter when it’s time to haul out. > > I’m being asked by Flex-o-Fold what my ‘Shaft Taper’ is. According to the > boat user manual the taper is ‘standard’ but my understanding is that > ‘standard taper’ can mean 1/10, 1/16, or 1/20. According to Flex-o-fold > they need this shaft taper info for the correct adapter sleeve. > > The following info applies: > > -=-=-= > > 1. Boat - Make and Model C&C 30, Mark II > > 2. Engine - Make and Model - Yanmar 2GM20F > > 3. Transmission Reduction Gear Ratio - 2.62 : 1 > > 4. Displacement (Weight) 8300 lb > > 5. Water Line Length 25.75 ft > > 6. Shaft Size or Sail Drive Model - 1 inch conventional shaft > > 7. Propeller Rotation left hand or right Hand - Right Hand > > 8. Current Propeller Size and Type (i.e. fixed 3-blade, feathering, > etc...) Martec RH 15D x 11P X1 (photo attached) > > > I have also attached photos of the shaft drawing (from user manual) and > Martec fixed prop. > > Martec Prop Photo <https://photos.app.goo.gl/tWbUW7CscPQz38MZ7> > https://photos.app.goo.gl/tWbUW7CscPQz38MZ7 > > Shaft Diagram Photo <https://photos.app.goo.gl/WwZiFewzcUVDwdL87> > https://photos.app.goo.gl/WwZiFewzcUVDwdL87 > > Thanks! > > > -Eddie Wills > > C&C 30 Mark II ‘Mystic Star’ > Your contributions help pay the fees associated with this list and help to > keep it active. Please help by making a small contribution using PayPal > at: https://www.paypal.com/paypalme/stumurray All contributions are > greatly appreciated. > > Your contributions help pay the fees associated with this list and help to > keep it active. Please help by making a small contribution using PayPal > at: https://www.paypal.com/paypalme/stumurray All contributions are > greatly appreciated.
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