Many years ago (>5?) I sprung for the Gori 2 blade, rated then per tank tests to be the lowest drag 2 blade geared folder available.
Worked with AB marine (Geoff? a New Zealander) and got everything right the first time and have never had any problems. I do have it cleaned up and serviced every year at haulout. When new it was such a beautiful shiny piece of bronze/brass engineering I ‘almost’ hated to install it underwater!. Charlie NelsonWater Phantom1995 C&C XL/kcb Sent from AOL Mobile Mail Get the new AOL app: mail.mobile.aol.com On Thursday, September 19, 2019, Matthew L. Wolford via CnC-List <[email protected]> wrote: #yiv6644695329 #yiv6644695329 -- _filtered #yiv6644695329 {panose-1:2 4 5 3 5 4 6 3 2 4;} _filtered #yiv6644695329 {font-family:Calibri;panose-1:2 15 5 2 2 2 4 3 2 4;}#yiv6644695329 #yiv6644695329 p.yiv6644695329MsoNormal, #yiv6644695329 li.yiv6644695329MsoNormal, #yiv6644695329 div.yiv6644695329MsoNormal {margin:0cm;margin-bottom:.0001pt;font-size:11.0pt;font-family:sans-serif;}#yiv6644695329 a:link, #yiv6644695329 span.yiv6644695329MsoHyperlink {color:#0563C1;text-decoration:underline;}#yiv6644695329 a:visited, #yiv6644695329 span.yiv6644695329MsoHyperlinkFollowed {color:#954F72;text-decoration:underline;}#yiv6644695329 p.yiv6644695329msonormal0, #yiv6644695329 li.yiv6644695329msonormal0, #yiv6644695329 div.yiv6644695329msonormal0 {margin-right:0cm;margin-left:0cm;font-size:11.0pt;font-family:sans-serif;}#yiv6644695329 span.yiv6644695329EmailStyle18 {font-family:sans-serif;color:windowtext;}#yiv6644695329 span.yiv6644695329EmailStyle19 {font-family:sans-serif;color:windowtext;}#yiv6644695329 .yiv6644695329MsoChpDefault {font-size:10.0pt;font-family:sans-serif;} _filtered #yiv6644695329 {margin:72.0pt 72.0pt 72.0pt 72.0pt;}#yiv6644695329 div.yiv6644695329WordSection1 {}#yiv6644695329 Yes, the Flex-o-Fold prop also solves the problem (for racing) of a Martec blade hanging down if not aligned. From: Hoyt, Mike via CnC-List Sent: Thursday, September 19, 2019 10:21 AMTo: mailto:[email protected] Cc: Hoyt, Mike Subject: Re: Stus-List The Low drag Prop saga is over! Hi Francois Our boat although much smaller than a 34+ (Frers 33) also has 3GM30F with 1:2.61 Kanzaki transmission. We had a Martec RH16D x 14P-3 prop that worked fine in fwd and poorly in reverse. Flex-o-fold sent 16x12 R bladeset and 2 blade hub. It arrived in 3 days after order. It is a bit smoother than the Martec in fwd, has much better reverse and I now know that we don’t have the possibility of one blade hanging down (we could never align shaft due to access). We are very happy with the flex-o-fold. I thought I had heard somewhere that optimum RPM is 80% of WOT. On the 3GM30F with WOT at approx. 3400 RPM that is 2720. We run at 2800RPM. 3100 seems a bit in excess of 80% I also wonder how much difference the size and weight of a boat comes into play. Our 33 is design displacement 9000 lbs and yet has same engine and transmission. Mike Hoyt Persistence 1987 Frers 33 #16 Halifax, NS www.hoytsailing.com From: CnC-List <[email protected]> On Behalf Of Francois Rivard via CnC-List Sent: September 19, 2019 10:23 AM To: [email protected]; [email protected] Cc: Francois Rivard <[email protected]> Subject: Stus-List The Low drag Prop saga is over! Hi Gary, You're right the 34+, 34/36, 34 R's came with a variety of engines and transmissions. They had me submit both my engine serial # and a picture of the transmission placard. (Yanmar 3GM30F / Kanzaki 2.6:1 Ratio) and they said: "Your engine is the most popular out there, we know what we're doing" They didn't. Max RPM was a struggling and smoking 3000-3100. Yanmar says it should be 3,400 continuous / 3,600 1 hour rating. That + on my boat: the vibrations sounded / looked destructive. I had a lot of time to research all that and this over-pitching thing is a commonly done to make their product look more efficient. The "Voile" French Magazine did a low drag prop test and they stated that a few manufacturers had sent over pitched props / Flex o fold was the worst offender. The comment was that the Flex o Fold was very fuel efficient but: "Be careful with the throttle, the prop is dangerously over-pitched, you could damage your engine". Live and learn.. Francois 1990 34+ "Take Five" Lake Lanier, GA ----------------------------------- Hi Francois, I had the same problem. It turned out my 37+ was delivered with 2 different transmission ratios, and the previous owner had ordered the prop for the wrong ratio. I wonder if the 34+ is available with 2 different transmission ratios. Once they sent me the correct prop she was fine. Agreed, they weren't the most friendly to deal with. Gary S/V Kaylarah '90 C&C 37+ East Greenwich, RI, USA _______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray _______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
_______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
