>From FlexFold web site regarding 2 vs 3 blades. Choice between fixed, folding, >feathering is your choice.
What propeller to choose? That depends on what sailing boat you got, the engine and not least - your priorities! A 2-blade propeller is more efficient than a 3-blade. Surprised? Well, most people are. Thus, a properly sized 2-blade will give you a higher speed at a given RPM in flat water than a properly sized 3-blade. The 2-blade is also lower in drag and cheaper. The 3-blade, because of its larger blade area, will accelerate the boat faster. This means a 3-blade is better around the docks, when powering against a head sea and when stopping. Ed Briar Patch C&C 34 New Orleans From: CnC-List [mailto:[email protected]] On Behalf Of [email protected] Sent: Tuesday, January 14, 2014 11:27 AM To: [email protected] Subject: Re: Stus-List Prop Question I just paid $1,145 for a 15x9R Flexofold. sam :-) From: Gary Nylander Sent: Tuesday, January 14, 2014 9:07 AM To: [email protected]<mailto:[email protected]> Reply To: [email protected]<mailto:[email protected]> Subject: Re: Stus-List Prop Question Chuck, you missed one other option, a two bladed geared folding prop, like the Flex-o-fold or Gori. With the Flex, you get a little less sailing performance (it only folds to a width of about an inch but the hub is that large, so this may be a non-issue) but it has blades with more curve than a Martec and they have more area out toward the end, so the powering performance is better and because the blades are geared together, it folds and unfolds as a unit. Advantages: you don't have to align the shaft to assure it will fold - a non-geared unit may have a blade hanging down if the prop is stopped in the horizontal position - a geared one always has a blade which wants to fold and bring the other one with it; it unfolds easier in reverse, so is more reliable in emergencies; and should be available for about $1000 (it has been years since I bought mine, and I don't know current prices). My $.02 Gary ----- Original Message ----- From: Chuck S<mailto:[email protected]> To: [email protected]<mailto:[email protected]> Sent: Monday, January 13, 2014 11:41 PM Subject: Re: Stus-List Prop Question I bought a sailboat to sail. If I wanted a powerboat, I'd buy a bass boat or a ski boat or a fishing boat or a house boat. I choose what's best for sailing and bought a MaxProp in 2007. Personal choice is what it's all about. The cost differences are very different as is performance. I changed from a Martec eliptic folding prop to a two blade MaxProp and love it. Roughly: A fixed 3 blade prop will cost $600; this is the slowest sailing prop but best powering forward and reverse. 2 blade Martec folding prop will cost $1500; this is the fastest sailing prop but least power w motoring against the wind and very little stopping power. 2 blade feathering prop like a MaxProp will cost $2000; next fastest sailing w great power motoring forward and reverse. Maybe 95% of a fixed prop. 3 blade feathering prop like a MaxProp will cost $3000; third fastest sailing w greatest power motoring forward and reverse, same as fixed prop, best for distance cruising. Chuck Resolute 1990 C&C 34R Atlantic City, NJ ________________________________ From: "Brian Morrison" <[email protected]<mailto:[email protected]>> To: [email protected]<mailto:[email protected]> Sent: Monday, January 13, 2014 10:44:48 PM Subject: Stus-List Prop Question Hello List, I have a 1979 C&C 34 with the original 2 blade martec folding prop. While at the yard today a friend suggested changing the prop to a fixed three blade for greater propulsion. The previous owner was a racer and I am more of a cruiser. My friend suggested that the 3 blade drag would be negligible but power would be much greater. Any thoughts or recommendations on prop replacement would be appreciated. Brian Brian C. Morrison S/V Rekofa, The Blue Whale 1979 C&C 34 Baltimore, MD _______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com [email protected]<mailto:[email protected]> ________________________________ _______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com [email protected]<mailto:[email protected]>
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