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S&S Swan General - Swan 38 Propeller change
17 October 2019 - 06:47
#1
Join Date: 16 October 2019
Posts: 8

Swan 38 Propeller change

Dear 38 owners, I am getting to know my own Swan 38. I would like some reccomendations for a replacement for the truely strange Kiwi prop that is fitted to my boat. The epic prop walk is my prime concern followed by the cavitation noise underway.

Chris

 

17 October 2019 - 07:40
#2
Join Date: 29 January 2007
Posts: 823

Dear Chris,

congratulation for your "new" S&S Swan 38 Spirit!

The clearence on the S&S Swan 38 is very thin, when I changed the prop on my 38/067 Only You, under Lars' suggestion, I opted for a three blade feathering Max Prop 15" (it is a custom made size, but at Max Prop they are extremely helpful and can do it with no extra cost), which is smaller than the original 16", and the clearance was therefore slightly impruved, with my satisfaction re. noise/vibration.

I don't have any experience with Kiwi.

Fair winds!

matteo (47/069 Vanessa)

 

17 October 2019 - 09:07
#3
Join Date: 31 January 2007
Posts: 47

Congratulations, Chris! 

I changed Infants (38/014) propeller for Flex-O-Fold 16 x 14 RH 3 13 years ago, and we have been very satisfied. Especially power towards heavy wind and reversing were much improved, compared to the old two-blade propeller. There is also clearly  less propwalk and noise. A few millimetres were ground from the hull above the propeller to have the clearance some 15-20 mm.

Enjoy your magnificent boat!

Jyrki

17 October 2019 - 11:17
#4
Join Date: 16 October 2019
Posts: 8

Thanks, I am presetly looking at a Gori prop , clearance over 16 will be an issue, I have a Sole mini 33 2.5-1 gear so does require a big prop plus the shaft is pushed aft slightly on the standard, hopefully someone is running something close to this spec.

Chris

17 October 2019 - 17:00
#5
Join Date: 31 January 2007
Posts: 47

Dear Chris, 

I forgot to mention that Infants engine is Bukh DV 24 ME with gear-ratio 3.00 fwd and 2.36 rev. 

Regards

Jyrki

21 October 2019 - 10:23
#6
Join Date: 14 May 2017
Posts: 56

Dear Chris,

I am also considdering a propeller change. I founmd some tests. And the advise from Lars was very helpful to me.

https://www.yachtingmonthly.com/gear/folding-and-feathering-propeller-test-29807

https://www.bomarine.net/downloads-mainmenu-34/autoprop/61-segeln-test-schroeven/file.html

http://www.flexofold.com/upload_dir/docs/Test_segeln.pdf

Kind regards,

Jolling Lodema
Swan 40, #22 Becca

 

22 October 2019 - 18:50
#7
Join Date: 29 January 2007
Posts: 823

Dear Chris,

this is the clearance (25 mm.) with the 15" Max Prop, three blades, onboard my 38/067 Only You

Fair winds!

matteo (47/069 Vanessa)

24 October 2019 - 08:21
#8
Join Date: 16 October 2019
Posts: 8

Hi Matteo,

how was the max prop? much prop walk?

 

24 October 2019 - 16:25
#9
Join Date: 29 January 2007
Posts: 823

Dear Chris,

I am not able to compare it with different props, as I just had this. What I can tell you is it is a very good propeller, and the after market service is extremely good 

Fair winds!

matteo (47/069 Vanessa)

27 November 2019 - 10:59
#10
Join Date: 25 October 2014
Posts: 9

A bit late but my VARIPROP , 4 blade works well and it is easy to adjust the pitch.

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