I have a Flex. When making the decision, I was at the Annapolis boat show and spent time at both booths. I found the Flex to have a higher quality casting and better finish than the Gori (which was a new model to them at the time), so went with the Flex. I have found it to be an excellent prop. It goes forward well, quickly stops the boat and reverses well.
Happy customer. When you are looking at them, remember the Flex has a lot of blade area out at the ends of the blades, whereas a Mar-Tec or fixed prop has less surface area per blade. You may not need as large a prop. Talk to the folks, I found them to be quite helpful. Gary 30-1 with Yanmar 2QM15. From: CnC-List [mailto:[email protected]] On Behalf Of Michael Brown via CnC-List Sent: Monday, October 24, 2016 4:31 PM To: [email protected] Cc: Michael Brown <[email protected]> Subject: Re: Stus-List Slip Choice, backing in > Prop Change The Gori did poorly, though note it was a three blade folding. Also Gori spec'd the wrong size of prop according to a note at the end of the article. It is a good article but I noted that most of the props stopped from 6 kts in 8 - 10 seconds, the majority of them did 6.4 - 6.65 kts ahead. For me the biggest differences would be in prop walk from 9 to 16%, nearly 70% more prop walk force. Overall the Flex-O-Fold 2 blade looks to be a good choice. The Gori 2 blade physically is very similar to the Flex-O-Fold. Anyone have experience testing those two against each other? Michael Brown Windburn C&C 30-1 From: "Nauset Beach" <[email protected] <mailto:[email protected]> > Mike, Several people on the list have retired their Martec props for the very reason you cite: very poor reverse performance. Many have changed to 2 blade Flex-O-Fold geared props and the difference in reverse is dramatic. Take a look at a prop test article from Yachting Monthly in the UK that Flex-O-Fold posted on their website at this link: http://www.flexofold.com/upload_dir/docs/Test_YachtingMonthly_low.pdf The Gori did not rank very well. I believe everyone who has switched to a Flex prop has been happy, once they get the pitch correct. I was initially spec'ed a 16 Diameter x 13 Pitch to replace a 16 x 14 Martec,. That was too much pitch and was getting severe cavitation / vibration. Now I have a 16 x 12 with better performance and very little vibration. Brian
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