Rigging Tips for a 37 Pac Sea? - Page 2 - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > Boat Builders Row > Pacific Seacraft
 Not a Member? 


Reply
 
LinkBack Thread Tools
  #11  
Old 10-16-2007
Member
 
Join Date: Nov 2006
Location: Beacon, New York
Posts: 652
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 8
Tartan34C will become famous soon enough
Quote:
Originally Posted by SVArgo View Post
Sapperwhite,

I believe that it is still LaFiell mast, not 100% though, I'll know about 0930 tomorrow. I actually tried to do a quick calculation based on LaFiell's information in the link you sent, but they didn't give the units on the moment of inertia, so I'm not quite sure if its coming out right. I've got some mast section data at work that I'll check tomorrow and see if I can't figure out how much tension would be required for a couple inches of rake.

At any rate, the one I believe the boat is fitted with is the OM3D, very beefy as you note. Definitely not a floppy racing rig!
I believe the moment of inertia Lefiell quotes is in inches to the fourth power. That also matches what I have for some other similar sections. And just a side trip into terminology. I think rake refers to the amount the mast tilts so a 3” rake would mean the masthead is 4” aft of the step. That rake would be the same if the mast had a bow in it or not. It just refers to how far the masthead is displaced compared to the heel or step. I think your rig does have some small amount of rake, 2 or 3 inches, but again it’s not a bendy rig and it needs to be straight between the step and masthead.
All the best,
Robert Gainer

PS. Lots of Yacht Clubs and small yards will step a mast but don’t have the expertise to tune or service one. They will step a mast that has obvious defects without even seeing them. Even in a “good” yard the owner should at least check the mast before steeping and if possible be there to be sure everything goes well. And it goes without saying you need to be aware of your masts condition and how the rig is tuned at all times. Its makes for a bad day if you drop the rig even if you are in sight of home and offshore it may become life threatening.
__________________
Study the history of naval architecture and move forward knowing what didnít work before.

Donít waste time making the same old mistakes but instead make new ones and to insure your place in history be sure the mistakes are big ones.

Never design a mast that is weaker then the boat
Never design a boat that is weaker then the mast

Never listen to someone describe why your project will not work unless they can show you the broken pieces of their own version.

Last edited by Tartan34C; 10-16-2007 at 06:33 AM.
Reply With Quote Share with Facebook
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Rigging repair at-sea Lin & Larry Pardey Gear and Maintenance Articles 1 02-16-2008 12:28 PM
Standing Rigging Basics Mark Matthews Racing Articles 0 08-29-2004 08:00 PM
Replacing Your Standing Rigging Mark Matthews Gear and Maintenance Articles 0 12-15-2002 07:00 PM
Sea Snakes Ralph Doolin Seamanship Articles 0 01-21-2002 07:00 PM
Sea Snakes Ralph Doolin Cruising Articles 0 01-21-2002 07:00 PM


All times are GMT -4. The time now is 09:26 PM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.