Repairing Mast "Access" Hole - SailNet Community
 
LinkBack Thread Tools
post #1 of 4 Old 04-28-2014 Thread Starter
Junior Member
 
Join Date: Aug 2013
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Repairing Mast "Access" Hole

After 6 months of searching, I found a replacement mast for Catalina 30 Tall Rig (my current mast has a nasty dent at the spreaders). Unfortunately, there are few things that about the replacement that have me concerned (and were in no way communicated by the seller...another story). My main concern is that there are a few holes that have been cut in the mast.

There is a 2.5x3.5 inch square access hole cut into the bottom of the mast (roughly 6 inches off the deck).






There is also a 5"x0.5" inch slit cut about 3 feet down from the masthead. I think this is for the spinnaker halyard....which could be perfectly normal.



My main concern is that these compromise the mast. Do they? If so, how do I repair? Welding? Rivet a plate on both sides?
bassmanss is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 4 Old 04-28-2014
Senior Member
 
Join Date: Sep 2011
Location: North Texas
Posts: 238
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 4
 
Re: Repairing Mast "Access" Hole

You can build doublers and rivet in place with flush rivets. Build a cover and use flathead screws to hold the cover in place. There is considerable strength in this method. This methiod is used on aircraft quite often.
H and E is offline  
Quote Quick Reply Share with Facebook
post #3 of 4 Old 04-28-2014 Thread Starter
Junior Member
 
Join Date: Aug 2013
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Re: Repairing Mast "Access" Hole

Ok. Some questions about methods. How thick should the doubler be (the mast is .160")? How much should I overlap hole? What size rivets? I'm assuming monel would be the material of choice?
bassmanss is offline  
Quote Quick Reply Share with Facebook
post #4 of 4 Old 04-29-2014
Senior Member
 
Join Date: Sep 2011
Location: North Texas
Posts: 238
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 4
 
Re: Repairing Mast "Access" Hole

Sent you a private message.
H and E is offline  
Quote Quick Reply Share with Facebook
Reply

Quick Reply
Message:
Options

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now



In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.


User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
"Seacock" vs. "ballcock" or "ball valve?" SEMIJim Gear & Maintenance 18 09-02-2013 05:31 PM
Adding an access hole in my mast etwilliams Gear & Maintenance 7 11-06-2011 08:46 AM
Sealing 3" hole in PSC deck near mast MC1 Pacific Seacraft 2 02-13-2010 02:07 PM
The boat seems to be leaking water through the "tiller hole"... martsmth Gear & Maintenance 2 05-26-2008 11:16 PM
C270 Main Sail "stack Pack", Quick Cover", "lazy Bag" Install randy22556 Catalina 1 02-28-2007 11:53 AM

Posting Rules  
You may post new threads
You may 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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome