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Post by Tafika II on Feb 14, 2013 23:23:26 GMT
We just ordered a three blade FlexoFold prop for Tafika II to be changed next week from a fixed factory 3 blade. Here's some information if you are interested:
Prop Model: 18x14-3 R bladeset
Hub: ISO 30, 3-blade hub for 30mm factory shaft
I am sailing to boat to Marine del Rey next from Redondo Beach (short sail/motor) and I'm going to log speed/RPM and sailing speed every 15-20 minutes with the fixed and then again on the way back with the new folding prop. I'll update you on this thread after I sail and motor for a few days.
We also looked at the new Kiwi 19" 4 Bladed prop, but decided folding vs. feathering. From what I read in this site and other, I think either choice would be fine.
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Post by Deleted on Feb 15, 2013 7:44:45 GMT
A good choice; our Flex-o-Fold has really added to the joy of sailing (close on a knot).
Performance under power good; no propwalk.
Just be prepared to use more RPM in reverse to stop the boat.
Looking forward to the report.
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Post by Tafika II on Feb 24, 2013 15:27:25 GMT
We'll...I'm back in the water with a new prop. Here's the results:
2/16/2013 - Pre-Retrofit 3 Blade Factory Standard Fixed Blade Prop
Conditions – No wind, flat seas, minimal current
1400 RPM 5.2kts
1800 RPM 5.9kts
2100 RPM 7.0kts
2700 RPM 7.7kts
3000 RPM 8.3kts
2/24/2013 - Post-Retrofit 3 Blade FlexoFold
Conditions – No wind, flat seas, minimal current
1400 RPM 5.3 kts.
1800 RPM 6.4 kts.
2100 RPM 7.1 kts.
2700 RPM 8.3 kts.
3000 RPM Did not take
I'm happy. Now I need some actual wind to test the sailing results.
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Post by alex1949 on Feb 27, 2013 8:14:49 GMT
hi,what engine is installed ?
Alex
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Post by Tafika II on Feb 27, 2013 14:20:19 GMT
We have a Yanmar Yanmar 4JH4E
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Post by twofish on Mar 5, 2013 23:09:14 GMT
Hello. Great idea. Where did you purchase the prop?
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Post by Tafika II on Mar 5, 2013 23:19:11 GMT
Direct from Flexofold... KW@Flexofold.com Keld Will-berg Flexofold ApS Bramdrupvej 50 DK-6040 Egtved Tel. +45 75 55 43 46 Fax +45 75 55 43 66 www.flexofold.com |
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Post by Tafika II on Mar 18, 2013 15:05:13 GMT
Just a small update...sailing yesterday we averaged 0.8 kts increase in 9-12kts winds. Also note, when sailing gear should be in REVERSE.
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Post by unclemo on Mar 20, 2013 18:29:57 GMT
I am just about to order the same for my 2009 DS42. FlexoFold is recommending me a 15 pitch though. They are saying my reverse gear is not the same as forward (2.36) and that the 15 will help compensate for that. Anyone else hear this?
Thanks
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Post by Tafika II on Mar 20, 2013 22:49:04 GMT
When I contacted Flexofold, I told them my Yanmar engine is 54 hp and gearbox is 2.36:1 reduction in forward. They we would recommended a 3-blade 18x14-3R propeller, which what I purchased. I am happy with the acquisition! If they are now suggesting a 15 pitch, maybe they can explain why.
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Post by zzmeyer on Apr 2, 2013 2:09:35 GMT
Impressive results. I have max prop. Better than your fixed but not as good as your new prop. How does it back. My max prop backs like a champ.
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Post by Tafika II on Apr 2, 2013 3:21:21 GMT
I'm impressed also and satisfied. Reverse is excellent with no prop walk, but does need just sightly higher RPM's. I don't notice it now as I've gotten use to it.
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Post by toniocask on Mar 2, 2014 10:41:44 GMT
Hi, We have a 2008 Jeanneau sun odyssey 42i and we are going to buy a new propeller. we are thinking about the flexofold 3 blade 18x14 as suggested by the company. could you give us further info about how is the behavior in reverse? our concern is that we can have more difficult in the maneuver back into the port. thanks  Antonio |
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Post by Tafika II on Mar 2, 2014 18:59:57 GMT
Whatever prop walk I had is gone. It does require slight more RPM to go in reverse, but I am now use to it and have had no problems. I would highly recommend the FlexFold product.
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Post by toniocask on Mar 3, 2014 21:06:39 GMT
Thank you for fast and clarifying response. I think I will proceed to purchase Ciao. |
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Post by dublin on Mar 4, 2014 19:39:04 GMT
Just for information
We fitted a Kiwi four years ago. Sailing performance was good adding close to 1kt to sailing speed in average winds. Motoring we initially lost about 1/2kt on cruising speed.
In 2012 season the motoring speed started to disimprove..
In 2013 we found it virtually impossible to exceed 6kts boat speed at max revs in flat water with no wind. Not a pleasant experience in 4kts of tide !
Have decided to refit the original three blade fixed for this season to make sure there is no damage to the gearbox. I have been told that some boats with the Kiwi have damaged their gearboxes. One was a two yar old beneteau 40 with the Kiwi fitted from new.
Just bought new sails so decision on new folding with have to wait for another year. I will report back later in rhe seaon on whether there is any gearbox issue.
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Post by Don Reaves on Mar 4, 2014 22:26:29 GMT
Dublin,
I'm quite surprised that your Kiwi prop decreased in performance over time. I installed one on my SO35 in 2008 and it still works as well as when it was new.
Did you lubricate the prop? If not, it may not be setting properly, ending up with the wrong pitch. I lubricate mine each spring just before launch. It takes about 20 minutes.
Don
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Post by dublin on Mar 4, 2014 23:41:53 GMT
Hi Don,
Yes it was greased each spring at lift out.
Due for lift out next weekend and I will be looking at it closely before doing anything with it. The dramatic loss in motoring performance was an unexpected result. My sailing is all west coast Scotland and the lack of performance was a great worry dealing with the tides when wind was wrong or non existent.
BJ maritime in bangor claim the kiwi causes serious gearbox problems on some boats. So I intend refitting the original prop to make sure all is ok before deciding on the nex step
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Post by toniocask on Mar 5, 2014 15:08:51 GMT
We just ordered a three blade FlexoFold prop for Tafika II to be changed next week from a fixed factory 3 blade. Here's some information if you are interested: Prop Model: 18x14-3 R bladeset Hub: ISO 30, 3-blade hub for 30mm factory shaft I am sailing to boat to Marine del Rey next from Redondo Beach (short sail/motor) and I'm going to log speed/RPM and sailing speed every 15-20 minutes with the fixed and then again on the way back with the new folding prop. I'll update you on this thread after I sail and motor for a few days. We also looked at the new Kiwi 19" 4 Bladed prop, but decided folding vs. feathering. From what I read in this site and other, I think either choice would be fine. Another question for you please :-)about flexofold size propeller: Flexofold write me that they would recommend the 18x14 size, but have had some who, because of the lower gear ratio in reverse have chosen a 20 x 13 for better performance in docks. Some people on an Italian forum and also Darglow engineerind ltd www.darglow.co.com recommend me that the right size propeller 20x13 is better than 18x14 for my sailboat. Now my ideas are very confused, and I dont'know what is better for my sailboat. Have you other info for me, what you think about this different sizes? Thank you so much Antonio S.O. 42i 2008 Italy |
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Post by Tafika II on Mar 5, 2014 15:24:24 GMT
I contacted FlexoFold with the engine model & serial number, the boat hull number and the gear box number/ratio and they gave me the recommended prop size. It has worked, so I suggest you go with the factory that makes them and reconfirm the size base on your boat information.
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Post by toniocask on Mar 6, 2014 11:22:54 GMT
I'll do that.
Thank's.
Antonio.
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Post by ianpowolny on Mar 19, 2014 6:53:11 GMT
Antonio, I contacted Darglow last year and they, sometimes, have secondhand props. Might be a cheaper option. There nice people to speak to.
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Post by toniocask on Mar 21, 2014 21:30:00 GMT
Thank you Ian |
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Post by Spritz on Aug 23, 2014 4:49:29 GMT
Dear ALL, The mistero is even big. for my 42DS they replied: With a Yanmar 4JH5E, 54HP@3000RPM ( gear reduction ratio 1:2,32 ) we would recommend a 3-blade 18x13-3L propeller for your Jeanneau Sun Odyssey 42DS.  |
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Post by hoppy on Aug 23, 2014 8:10:14 GMT
Dear ALL, The mistero is even big. for my 42DS they replied: With a Yanmar 4JH5E, 54HP@3000RPM ( gear reduction ratio 1:2,32 ) we would recommend a 3-blade 18x13-3L propeller for your Jeanneau Sun Odyssey 42DS. The size recommended is the same as Tafika but the pitch is slightly different and most importantly you need a Left-hand prop whilst Tafika needs a Right-hand prop. I checked online and Tafika's 4JH4E "Direction of rotation (crankshaft) Counter clockwise viewed from stern" whilst your 4JH5E requires clockwise My slightly smaller SO40 (4JH3E, 55 HP @3800 RPM, reduction 1:2,63) was recommended 18x13-3R propeller |
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