saildrive or prop makes high screaming sound

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   Your saidrive was innocent, I'm sure. It is a "problem" related to the prop.
Your referee Orebro, in the match Italia - Romania, was not innocent too........
I'm playing the fool, of course!!!!
Ciao

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tremalnaik Members Profile Send Private Message Find Members Posts Add to Buddy List Commander Joined: 17 August 2006 Location: Italy Status: Offline Points: 83	Post Options Post Reply Quote tremalnaik Report Post Thanks(0) Quote Reply Posted: 17 June 2008 at 11:26
	Your saidrive was innocent, I'm sure. It is a "problem" related to the prop. Your referee Orebro, in the match Italia - Romania, was not innocent too........ I'm playing the fool, of course!!!! Ciao

H8jer Members Profile Send Private Message Find Members Posts Add to Buddy List Admiral Joined: 14 September 2010 Location: Denmark Status: Offline Points: 1503	Post Options Post Reply Quote H8jer Report Post Thanks(0) Quote Reply Posted: 28 April 2011 at 08:31
	All of last season I sailed with only 1800 rpm. From 1900 rpm to 2600 rpm there was an obnoxious high-pitched screaming sound. I've talked to a specialist who said that the sound is due to the trailing edge of the propeller is too thick. This may be because the propeller has been painted several times. As you can see in the picture has the old propeller seen better days. The boat got into the water yesterday. The old fixed propeller is now switched to a Volvo Penta folding propeller 16x11. The old prop was 16x11. The sound is gone! Yes. At 2500 rpm it went from 6 to 6.5 kn against a light wind. be careful when you compare your propellerperformance to mine, because I have the old s-drive MS25S with gear ratio 2.47:1
	Hanse 370#487 30HP 3-cabin



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