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Author Topic: Transmission position when sailing  (Read 1739 times)

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Brad Young

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Transmission position when sailing
« on: October 14, 2013, 09:16:28 PM »

I normally place my transmission in reverse while sailing. However last weekend I placed it in neutral. I noticed a new noise ( grrh,grrh,grrh) like a bearing going bad.  When I placed it in reverse the noise went away. When I cranked up the engine I did not notice any bearing noise.

Any thoughts on what this could be? Cutlass? Transmission?  and how to figure out what is the problem and how To fix it would be greatly appreciated.

Thanks in advance
Brad
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Brad Young
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Year 1986
Model C34
Hull# 84

Stu Jackson

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Re: Transmission position when sailing
« Reply #1 on: October 14, 2013, 09:50:39 PM »

Brad, it's simply because the prop is turning when you're in neutral and sailing.  Most of us sail with it in reverse, some in neutral with the noise or a shaft lock to stop the noise.  Never in forward.  http://www.c34.org/wiki/index.php?title=The_Right_Transmission_Gear_for_Sailing
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Stu Jackson, C34 IA Secretary, #224 1986, "Aquavite"  Cowichan Bay, BC  Maple Bay Marina  SR/FK, M25, Rocna 10 (22#) (NZ model)

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RV61

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Re: Transmission position when sailing
« Reply #2 on: October 15, 2013, 03:28:14 AM »

Brad, I have a PSS dripless shaft seal and I found I need to burb it on occasion and be sure the shaft is  free of an type of dirt and dust where it passes thru seal. To burp I :?: just pull back toward aft on the Disk untill water comes in and release. Once clean and burbed squeal dissapears. Do you have a PSS Dripless shaft seal?
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Rick V
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Ron Hill

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Re: Transmission position when sailing
« Reply #3 on: October 15, 2013, 03:47:14 PM »

Brad : You could have a worn cutless bearing.  The way to tell is get in the water and check the play, or have the boat hauled and check the play.

A thought
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Ron, Apache #788

wind dancer

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Re: Transmission position when sailing
« Reply #4 on: October 18, 2013, 08:40:23 AM »

This could be as simple as a ground to your prop shaft making noise.  When the shaft turns it rubs, when it's locked it doesn't.  I had a shaft brush grounding strap that pressed against my prop shaft in my old C34.  Not sure if it was effective -- it was there when I purchased the boat.
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Jay Guard, 1996 Catalina 380, #3, "Aquila", Seattle

Jack Hutteball

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Re: Transmission position when sailing
« Reply #5 on: October 18, 2013, 11:09:38 AM »

Brad,
It could also be a loose shaft zinc that has slid down and be rubbing on the shaft strut.  Happened to me once.  Could not hear it when engine was running, but was very noticeable if the shaft was free wheeling.

Jack
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Jack and Ruth Hutteball
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