I have a 16" Max Prop on our 38 Landfall. Has a 3HMF with a ZF v-drive ( 2.1 ).
Currently I have the pitch at 8" from a previous attempt at a pitch of 10". I think it is under-pitched at 8" and will return to 10" over the winter. At 2000 rpm no problem getting just over 6 knots... 2400 gets closer to 7 but that is about the limit under power as the stern starts to squat pretty bad. At your 14", given I have a similar setup, I would think it a little over-pitched. But assuming you aren't overloading the engine ( black smoke etc ) you should get good speed at modest RPM. You might, as you suspect, be causing the transmission to slip... Assuming it has plates/cones. Ed Vanderkruk Toronto Canada On Wed, Aug 20, 2025, 4:11 p.m. rockland bazemore via CnC-List < cnc-list@cnc-list.com> wrote: > Wondering what setups you all have with this configuration. > We have a newer 16" Maxprop (I never measured) with recently adjusted to > 14º pitch based on Rob's 37+ setup. He does a lot closer to hull speed. > > When we left for our trip in Annapolis we could do 5.2kn. The bottom was > cleaned about 3 weeks prior. > I changed the pitch to 14º in Block Is. > Couple weeks later and now we only do 4.2kn in slack water. > The bottom doesn't seem to be THAT bad. The prop and shaft are very clean. > I'm wondering now if its possible transmission slipping? The ATF oil > smells fine. > > Gear ratio 2.14 Prop shaft 1-1/8" > > Ideas? > > -- > Rockland Bazemore > S/V Blue Pearl > C&C 37/40+ > Annapolis, MD > 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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