Flexofold

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Hi,I have a Hanse 400e from 2006 with the Yanmar 39hp and SD50. I have a Flex-O-Fold 18x12 3L fitted.
I'm cruising 7 knot @2300 rpm and reach 8 knot at 3000 rpm. You can probably go up one inch on pitch (18x13 3L) and still reach close to 3000 rpm.

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JesperBergsjo Members Profile Send Private Message Find Members Posts Add to Buddy List Lieutenant Joined: 12 August 2012 Location: Sweden Status: Offline Points: 23	Post Options Post Reply Quote JesperBergsjo Report Post Thanks(0) Quote Reply Posted: 18 June 2015 at 11:11
	Hi, I have a Hanse 400e from 2006 with the Yanmar 39hp and SD50. I have a Flex-O-Fold 18x12 3L fitted. I'm cruising 7 knot @2300 rpm and reach 8 knot at 3000 rpm. You can probably go up one inch on pitch (18x13 3L) and still reach close to 3000 rpm.
	Jesper

Carlosailfan Members Profile Send Private Message Find Members Posts Add to Buddy List Captain Joined: 06 March 2014 Location: Belgium Status: Offline Points: 194	Post Options Post Reply Quote Carlosailfan Report Post Thanks(0) Quote Reply Posted: 02 September 2019 at 14:40
	Vibrations with a flexofold 3 blade propeller on H385 D2-40 engine. I installed this season a flexofold 3 blade propeller on our H 385 with the result @ 1000 rpm as well as @ 2000 rpm the cockpit table shakes as well as both steering wheels. You feel also the vibrations at all spots in the boat. When the engine is at idle and not engaged everything is smooth even on 2000 rpm or 2800 rpm, there is no vibration but whit the prop engaged, a lot of vibration. I did not hit anything, this was from the beginning. ( new installation ) Can everybody share his / her experience in this topic ? Thanks, /C
	Best regards /C

Rock Members Profile Send Private Message Find Members Posts Add to Buddy List Commadore Joined: 19 September 2014 Location: Netherlands Status: Offline Points: 404	Post Options Post Reply Quote Rock Report Post Thanks(0) Quote Reply Posted: 02 September 2019 at 15:04
	For what it is worth, I don’t think you should feel any undue vibration with the prop engaged at any speed. In my experience, the higher the revs, the less vibration/resonance. The vibration is more than you had with std fixed 2 blade prop? While the 3 blade bronze prop is much heavier than the 2 blade Al prop, flexofold ensures the prop is well balanced before shipment. Did you ask them? My pedestal with e95mfd sitting quite high up, vibrates somewhat at low revs (800 rpm), this disappears when I rev up (prop not engaged). In my view, this is normal resonance resulting from the flexibility of the steel tubing BR peter
	Hanse 400e "M-square2" #0241

Carlosailfan Members Profile Send Private Message Find Members Posts Add to Buddy List Captain Joined: 06 March 2014 Location: Belgium Status: Offline Points: 194	Post Options Post Reply Quote Carlosailfan Report Post Thanks(0) Quote Reply Posted: 03 September 2019 at 08:28
	Hi Peter, thx for sharing your knowledge, indeed with the 2 blade fixed it was really smooth, almost no vibrations. If flexofold balances the prop, than the blades should have specific places on the hub i guess ?? In the while i got fdbk from FOF, they asked me to sent back the prop to them so they can check. Let us see what they make out of it. Also i found a company in Holland who can balance the prop if needed, but this will cost some euro's. thx, Carlo
	Best regards /C

Fendant Members Profile Send Private Message Find Members Posts Add to Buddy List Admiral Joined: 03 November 2012 Location: Switzerland Status: Offline Points: 1671	Post Options Post Reply Quote Fendant Report Post Thanks(0) Quote Reply Posted: 03 September 2019 at 09:36
	Carlo, it could be that your new prop has less clearance between the blade tips and the hull. This might cause the vibrations. Good Luck
	Frank

Carlosailfan Members Profile Send Private Message Find Members Posts Add to Buddy List Captain Joined: 06 March 2014 Location: Belgium Status: Offline Points: 194	Post Options Post Reply Quote Carlosailfan Report Post Thanks(0) Quote Reply Posted: 03 September 2019 at 14:29
	Hi Frank, good remark, thanks ! Something to check in October, then the H385 will be lifted out for cleaning. best regards, C
	Best regards /C

Rock Members Profile Send Private Message Find Members Posts Add to Buddy List Commadore Joined: 19 September 2014 Location: Netherlands Status: Offline Points: 404	Post Options Post Reply Quote Rock Report Post Thanks(0) Quote Reply Posted: 03 September 2019 at 20:33
	Carlo, Yes, each blade has its own/corresponding place on the hub. You’ll find punched/engraved markings on the blades, 1, 2 and 3 dots. You typically receive the prop dissembled, misplacing the blades would be an explanation BR Peter Edited by Rock - 03 September 2019 at 20:37
	Hanse 400e "M-square2" #0241

Carlosailfan Members Profile Send Private Message Find Members Posts Add to Buddy List Captain Joined: 06 March 2014 Location: Belgium Status: Offline Points: 194	Post Options Post Reply Quote Carlosailfan Report Post Thanks(0) Quote Reply Posted: 04 September 2019 at 11:55
	Hi Peter, thanks for this advise, i have to look closely to the blades and the prop. FOF is not writing anything in their installation instructions regarding the placement and i did not see these dot's so far. Fair enough to say i did not look for neither, but it seems very logic to me what you tell . thx, Carlo
	Best regards /C

Nilandhoo Members Profile Send Private Message Find Members Posts Add to Buddy List Commander Joined: 07 March 2012 Location: Portsmouth Status: Offline Points: 117	Post Options Post Reply Quote Nilandhoo Report Post Thanks(0) Quote Reply Posted: 04 September 2019 at 17:25
	Carlo, We have a two blade Volvo folding prop which had been progressively causing vibration and giving difficulty when going astern. We believed that the prop was water lubricated so we had never lubricated it. This year we checked the manual and discovered that we should have used waterproof grease. The effect has been very noticeable, no vibration and she now goes astern without any problems again. I guess we should have studied the book in more detail. Just wondered if your prop was greased when it was installed? Regards Paul
	Hanse 325 'One Life'

Carlosailfan Members Profile Send Private Message Find Members Posts Add to Buddy List Captain Joined: 06 March 2014 Location: Belgium Status: Offline Points: 194	Post Options Post Reply Quote Carlosailfan Report Post Thanks(0) Quote Reply Posted: 05 September 2019 at 08:35
	Hi Paul, thanks for this proposal, i greased the prop excessively by installation so this should be OK but any way it confirms what FOF is not writing in the instructions, grease, grease .... the way to keep it smooth running. thanks for confirming this :) best regards, Carlo
	Best regards /C



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