My LF38 came with a 2 blade Martec Eliptec (LH18DX14P-3 1-1/8), and I agree with others that the performance is surprising good. Yes I often forget/neglect to align the blades, and I have experienced the boat shake on a rare occasions. Performance wise, forward to hull speed is no problem in flat water, but like others, I cruise at about 6.5 with a lower rpm (Yanmar 3QM30/Paragon/Walter-Vee). With regards to backing/stopping, I have not hit anything (harder than willing) yet. I do get some starboard prop walk which I try to take advantage of, but it is nothing compared to the walk of my old 29Mk1 w/ a fixed 2 bladed prop.
- Paul E. 1981 C&C 38 Landfall S/V Johanna Rose Fort Walton Beach, FL http://svjohannarose.blogspot.com/ > On Feb 15, 2018, at 10:32 PM, cnc-list-requ...@cnc-list.com wrote: > > My Martec runs very smoothly with a couple small harmonics at different > rpm's. That's normal for nearly all drive trains. > > Forward power is good. I think my prop is a wee bit underpitched. I can > get hull speed with a clean bottom and max rpm but only 6.4-6.5 at cruise > rpm (80% max). > > I really haven't had any issue with opening, closing, etc. I think the > Martec is a good choice for folks who race and want minimal drag. If my > use was only cruising, I'd probably have a different prop. > > Dennis C.
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