Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 30-01-2014, 07:12   #46
Registered User

Join Date: Dec 2007
Location: Echo Bay, Ontario
Boat: 40' steel Trawler
Posts: 31
Re: Defever leaning to port...trim tab issue?

Hi Dave

Could you please explain the purpose for fixed trim tabs?
Thanks

Capt Nemo
__________________

__________________
Capt Nemo is offline   Reply With Quote
Old 30-01-2014, 07:21   #47
Registered User

Join Date: Feb 2008
Posts: 371
Re: Defever leaning to port...trim tab issue?

I think the term "trim tab" is misapplied in the context of "fixed trim tab". If they exist in this case they may have been applied to help get the boat up on a plane more easily. We have the same type of thing on our RIB dinghy.
__________________

__________________
chrisjs is offline   Reply With Quote
Old 30-01-2014, 11:47   #48
Registered User

Join Date: Jun 2008
Location: seattle
Boat: Devlin 48 Moon River,j/100 BJ
Posts: 586
Re: Defever leaning to port...trim tab issue?

This fixed tab thing may be a language or definition issue. Some boats are built with or have added fixed wedges or tabs(horizontal fins to control unwanted bow angle up or down. I don't know if that would come under the definition of trim tab, language detail is not my thing. I still think someone should be checking out the rudder situation on this boat that only leans at speed.
__________________
eyschulman is offline   Reply With Quote
Old 30-01-2014, 12:03   #49
Nearly an old salt
 
goboatingnow's Avatar

Cruisers Forum Supporter

Join Date: Jun 2009
Posts: 13,649
Images: 3
Quote:
Originally Posted by Capt Nemo View Post
Hi Dave

Could you please explain the purpose for fixed trim tabs?
Thanks

Capt Nemo
Many boats are often fitted with a trim tab fixed at a particular angle. ( by a threaded rod ) this is to correct an Unacceptable angle at above displacement speeds. Usually this is bow angle but I have seen them used to correct list at speed. Some boats can chine walk and tabs are used to correct that.

These tabs are different from adjustable tabs.

Dave
__________________
Check out my new blog on smart boat technology, networking and gadgets for the connected sailor! - http://smartboats.tumblr.com
goboatingnow is offline   Reply With Quote
Old 07-02-2014, 00:34   #50
Registered User

Join Date: Jun 2013
Posts: 124
CACruiser
Any news on the tilting problem?
__________________
GPSocal is offline   Reply With Quote
Old 20-02-2014, 12:40   #51
Registered User
 
Hoofsmit's Avatar

Join Date: Jul 2013
Location: cornwall uk
Posts: 569
Re: Defever leaning to port...trim tab issue?

Quote:
Originally Posted by GPSocal View Post
CACruiser
Any news on the tilting problem?

Any body?
__________________
Hoofsmit is offline   Reply With Quote
Old 20-02-2014, 13:26   #52
Senior Cruiser
 
Cheechako's Avatar

Cruisers Forum Supporter

Join Date: Aug 2006
Location: Skagit City, WA
Posts: 19,363
Re: Defever leaning to port...trim tab issue?

Quote:
Originally Posted by eyschulman View Post
This fixed tab thing may be a language or definition issue. Some boats are built with or have added fixed wedges or tabs(horizontal fins to control unwanted bow angle up or down. I don't know if that would come under the definition of trim tab, language detail is not my thing. I still think someone should be checking out the rudder situation on this boat that only leans at speed.
Many power boats lean at speed. I have spent alot of time trying to solve the problem on planing power boats. Everything from outboard motor vertical placement adjustments, removal of hull strakes, addition of hull strakes, angle of hull strakes to center line...etc etc. Even boats with dual engines with counter rotating props would sometimes lean one way or another. After all this my guess is that it is torque related, but also wind related. It appeared that with a boat totally level on plane, when a light direction adjustment was made and even a ripple of a breeze was now from one side, the boat would lean. The solution is just using hydraulic trim tabs to adjust it out. (ie; more trim on one side than the other)
__________________
"I spent most of my money on Booze, Broads and Boats. The rest I wasted" - Elmore Leonard











Cheechako is offline   Reply With Quote
Old 23-03-2014, 08:36   #53
Registered User

Join Date: May 2011
Location: New Smyrna Beach, Fl
Posts: 105
Re: Defever leaning to port...trim tab issue?

Many planning hulls especially the deep vee hulls will lean to one side or the other. Main reason for tabs. Mine does it to.

It is mind boggling to me that a person captaining a 68 ft vessel doesn't know more about his boat or specifically trim tabs. Trim tabs are not uncommon. Pretty scary.
__________________
C Skip R is offline   Reply With Quote
Old 23-03-2014, 08:52   #54
Moderator
 
HappyMdRSailor's Avatar

Cruisers Forum Supporter

Join Date: May 2008
Location: North Mississippi
Boat: 48 Wauquiez Pilot Saloon-C22 Chrysler Sunpiper- 19 Potter-Preparing to cruise w/my girl
Posts: 5,980
Re: Defever leaning to port...trim tab issue?

Quote:
Originally Posted by brutb View Post
I PMed CaCruiser the other day and he had an electrician and a diver coming to check for trim tabs and/or stabilizers and said when he found out what is the problem he would get back to us on CF...
Quote:
Originally Posted by chrisjs View Post
I guess all may be revealed when the boat is finally hauled. I hope we get to hear the conclusion.
Quote:
Originally Posted by chrisjs View Post
Bout time we heard back from the original poster!!

Seems to me he needs to put a mask on or pull the boat.
Quote:
Originally Posted by GPSocal View Post
CACruiser
Any news on the tilting problem?
Quote:
Originally Posted by Hoofsmit View Post
Any body?
I think it blows major donkey when we put in the effort to help, and the OP is off in the wind.... Too bothered to update or thank us...

There goes "our learning moment" when we might be able to help a thankful and enthusiastic newbie with a similar problem in the future...

: o P*************

(that's a shame on you raspberry)
__________________
In the harsh marine environment, something is always in need of repair...

Mai Tai's fix everything...
HappyMdRSailor is offline   Reply With Quote
Old 23-03-2014, 15:30   #55
Registered User
 
Hoofsmit's Avatar

Join Date: Jul 2013
Location: cornwall uk
Posts: 569
Re: Defever leaning to port...trim tab issue?

Patience is a virtue :bangh ead:
__________________
Hoofsmit is offline   Reply With Quote
Old 25-03-2014, 17:54   #56
Registered User

Join Date: Jun 2013
Posts: 124
While waiting for the owner's response, I have developed three new potential fixes.
1. While underway, determine maximum heel and record it in degrees. Hire a shipwright to adjust the decks and the sole to match the amount of heel being experienced. This would require some cabinet and furniture removal and replacement but it would make everything level at cruising speed. or ......
2. Never exceed 3-5 knots underway or ..............
3. Never leave the dock.

PROBLEM SOLVED!! BRING ON THE NEXT ONE.
__________________
GPSocal is offline   Reply With Quote
Old 26-03-2014, 07:10   #57
Moderator
 
HappyMdRSailor's Avatar

Cruisers Forum Supporter

Join Date: May 2008
Location: North Mississippi
Boat: 48 Wauquiez Pilot Saloon-C22 Chrysler Sunpiper- 19 Potter-Preparing to cruise w/my girl
Posts: 5,980
Re: Defever leaning to port...trim tab issue?

Quote:
Originally Posted by Hoofsmit View Post
Patience is a virtue :bangh ead:
I got the OP's patience right here.... (oops no appropriate smiley similar to thumbs up)...

Quote:
Originally Posted by GPSocal View Post
While waiting for the owner's response, I have developed three new potential fixes.
1. While underway, determine maximum heel and record it in degrees. Hire a shipwright to adjust the decks and the sole to match the amount of heel being experienced. This would require some cabinet and furniture removal and replacement but it would make everything level at cruising speed. or ......
2. Never exceed 3-5 knots underway or ..............
3. Never leave the dock.

PROBLEM SOLVED!! BRING ON THE NEXT ONE.
Excellent!!!

#1 would probably require a healthy counterweight suspended from the high side beam when stationary... But certainly doable... I vote for #1...
__________________
In the harsh marine environment, something is always in need of repair...

Mai Tai's fix everything...
HappyMdRSailor is offline   Reply With Quote
Old 26-03-2014, 09:01   #58
Nearly an old salt
 
goboatingnow's Avatar

Cruisers Forum Supporter

Join Date: Jun 2009
Posts: 13,649
Images: 3
Re: Defever leaning to port...trim tab issue?

Its not as much a laugh as you think, many boats have balancing weights embedded in the boat to compensate for static heel, especially boats built with optionally different interiors.

dave
__________________
Check out my new blog on smart boat technology, networking and gadgets for the connected sailor! - http://smartboats.tumblr.com
goboatingnow is offline   Reply With Quote
Old 26-03-2014, 10:34   #59
Registered User
 
Hoofsmit's Avatar

Join Date: Jul 2013
Location: cornwall uk
Posts: 569
Re: Defever leaning to port...trim tab issue?

Quote:
Originally Posted by goboatingnow View Post
Its not as much a laugh as you think, many boats have balancing weights embedded in the boat to compensate for static heel, especially boats built with optionally different interiors.

dave
I think the term is 'Ballast'
not sure how true, but I was told that some of the south coast work boats had ingots that could be moved to the windward side when beating
__________________
Hoofsmit is offline   Reply With Quote
Old 27-03-2014, 11:13   #60
Moderator
 
HappyMdRSailor's Avatar

Cruisers Forum Supporter

Join Date: May 2008
Location: North Mississippi
Boat: 48 Wauquiez Pilot Saloon-C22 Chrysler Sunpiper- 19 Potter-Preparing to cruise w/my girl
Posts: 5,980
Re: Defever leaning to port...trim tab issue?

Quote:
Originally Posted by goboatingnow View Post
Its not as much a laugh as you think, many boats have balancing weights embedded in the boat to compensate for static heel, especially boats built with optionally different interiors.

dave
Seen it plenty of times... had a dockmate with a 45' flybridge that listed a serious 4-6 degrees... Never got him talked into fixing it...

Quote:
Originally Posted by Hoofsmit View Post
I think the term is 'Ballast'
not sure how true, but I was told that some of the south coast work boats had ingots that could be moved to the windward side when beating
All the time... race boats... cruise boats... dingy with a fat friend for the piping days...
__________________

__________________
In the harsh marine environment, something is always in need of repair...

Mai Tai's fix everything...
HappyMdRSailor 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




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 01:54.


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.