Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 19-06-2009, 00:56   #1
Registered User
 
gbendaly's Avatar

Join Date: Sep 2008
Location: Beirut Lebanon
Boat: 1986 aloa 27 - KAVALA
Posts: 136
Images: 29
Vibrating Tiller

Hi to all
my boat is a 27 monohull with a skeg mounted rudder
I have always felt vibrations in the tiller as soon as I sail past 4.5 knots.
I dove under at many occasions to investigate the rudder and its post but every thing seemed OK.
does any one have an idea as to what maybe causing these tremors ? they feel as if the rudder plan is hitting something below the hull
they are only noticeable when sailing
but disappear at low speed or when motoring
thanks
george
__________________

__________________
live your dream don't dream your life
gbendaly is offline   Reply With Quote
Old 19-06-2009, 01:07   #2
Registered User
 
Tim88's Avatar

Join Date: Jul 2008
Location: Mandurah, West Australia
Boat: Sea Urchin II
Posts: 32
Images: 2
Do you have a shaft & prop infront of the rudder, and if so is it a folding or fixed prop? Just curious.
__________________

__________________
Sea Urchin II Sailing Blog - http://www.sailblogs.com/member/seaurchinii/
Tim88 is offline   Reply With Quote
Old 19-06-2009, 01:25   #3
Registered User

Join Date: Dec 2008
Location: Chester, MD for now
Boat: Pearson Ariel 264
Posts: 124
This thread is just asking for a joke! Some people pay good money for a problem such as yours.

So now its out of the way!
__________________
Keith
International Man of Leisure
Chattcatdaddy is offline   Reply With Quote
Old 19-06-2009, 01:30   #4
Registered User
 
gbendaly's Avatar

Join Date: Sep 2008
Location: Beirut Lebanon
Boat: 1986 aloa 27 - KAVALA
Posts: 136
Images: 29
Quote:
Originally Posted by Tim88 View Post
Do you have a shaft & prop infront of the rudder, and if so is it a folding or fixed prop? Just curious.
ideed the propeller is a 3 blade fixed one on a shaft
__________________
live your dream don't dream your life
gbendaly is offline   Reply With Quote
Old 19-06-2009, 01:30   #5
Registered User
 
gbendaly's Avatar

Join Date: Sep 2008
Location: Beirut Lebanon
Boat: 1986 aloa 27 - KAVALA
Posts: 136
Images: 29
bad boy you !
__________________
live your dream don't dream your life
gbendaly is offline   Reply With Quote
Old 19-06-2009, 12:46   #6
Senior Cruiser
 
SkiprJohn's Avatar

Cruisers Forum Supporter

Join Date: May 2006
Location: Kea'au, Big Island, Hawaii
Boat: Cascade, Sloop, 42 - "Casual"
Posts: 14,192
Aloha,
Usually it is a loose gudgeon and pintle that allows vibration at speed. Is there any slop when you wiggle the rudder back and forth while your inspecting it underwater?
Good luck in isolating the problem.
Kind regards,
JohnL
__________________
SkiprJohn is offline   Reply With Quote
Old 19-06-2009, 12:52   #7
Senior Cruiser
 
SkiprJohn's Avatar

Cruisers Forum Supporter

Join Date: May 2006
Location: Kea'au, Big Island, Hawaii
Boat: Cascade, Sloop, 42 - "Casual"
Posts: 14,192
Oops, I see that you have a rudder post. You might want to see if there is any play in the post as its attached to the rudder. Also tighten the tiller to post connection if it is a bit loose. Can the prop spin freely while sailing and set up a harmonic vibration? Maybe trying to sail with the prop secured might give you a clue as to what might be happening.
Kind regards,
JohnL
__________________
SkiprJohn is offline   Reply With Quote
Old 19-06-2009, 13:17   #8
Moderator
 
Dockhead's Avatar

Cruisers Forum Supporter

Join Date: Mar 2009
Location: Cowes (Winter), Baltic (Summer) (the boat!); somewhere in the air (me!)
Boat: Cutter-Rigged Moody 54
Posts: 19,737
Quote:
Originally Posted by Chattcatdaddy View Post
This thread is just asking for a joke! Some people pay good money for a problem such as yours.

So now its out of the way!

Uh, hu. I was just going to write that you could use it to pleasure your missus, when you're not in the mood. I almost resisting writing that.
__________________
Dockhead is offline   Reply With Quote
Old 19-06-2009, 14:17   #9
Senior Cruiser
 
Cheechako's Avatar

Cruisers Forum Supporter

Join Date: Aug 2006
Location: Skagit City, WA
Posts: 19,352
I have had it on boats also, I figured it was one of two things: the rudder shape isnt perfect and the imbalance make it vibrate when it gets to higher speed, or....the fixed prop is rotating and causing the water to vibrate the tiller/rudder...
__________________

__________________
Cheechako is offline   Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Tiller Locks Zach General Sailing Forum 16 15-07-2016 11:59
A new tiller handle Allan S Construction, Maintenance & Refit 3 22-02-2009 10:06
tiller tamer clifflindsey Construction, Maintenance & Refit 0 04-09-2008 18:27
emergency tiller? limmer Monohull Sailboats 7 01-04-2008 17:14
Emergency Tiller RETTSIE The Sailor's Confessional 1 09-09-2007 16:11



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 02:45.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.