Cruisers Forum

Join CruisersForum Today

Thread Tools Search this Thread Rate Thread Display Modes
Old 31-05-2010, 03:21   #1
Registered User

Join Date: May 2010
Location: Varies
Boat: Miura 30.5ft
Posts: 21
Aluminum Mast Repair ?

I have a 1" hole in my mast below the gooseneck area. Found it while chipping off paint bubbles. I am in the middle of no where. No Mast manufactures or ship yard. There is a workshop that can weld aluminium but not sure if it will just create another weak spot. Should I make doubler plates with rivets or have it welded?

leslie is offline   Reply With Quote
Old 05-06-2010, 11:01   #2
Registered User
Rearsteer's Avatar

Join Date: Dec 2009
Boat: Morgan 382, Farallon 25
Posts: 121
Images: 8
Your idea of a doubler plate with rivets is the way to go. Aircraft are put together with plates and rivets. Then when you get to a yard you can have it checked out. Keep your mast loads light in tell its checked out.

Rearsteer is offline   Reply With Quote
Old 05-06-2010, 12:32   #3
roverhi's Avatar

Join Date: Aug 2005
Location: Kona, Hawaii, Carlsbad, CA
Boat: 1969 Pearson 35 #108 & 1976 Sabre 28
Posts: 6,305
Send a message via Yahoo to roverhi
What caused the hole?? Is it corrosion or an old fitting that was removed and puttied over?? If the latter, wouldn't worry about it, if the former it might require further remediation to cure the cause of the electrolysis and reinforce around the hole. In and of itself, a 1" puka is not a big deal in the strength of the mast. Racing boats cut a bunch of slots in the mast to run internal halyards without a problem. Our mast has had a lot of hardware added and removed over the years and the mast is still functioning well. If you think the mast needs reinforcement, riveting a piece over the puka is the conventional way to repair aluminum. Look at long time service/high flight hour 737s if you want to get an idea what Boeing and the FAA think of how strong these type of patches are. FWIW, aluminum welds about 25% weaker than the surrounding metal. That is unlike steel welding where the welds are just as strong as the metal being welded.
roverhi is online now   Reply With Quote
Old 05-06-2010, 17:53   #4
Senior Cruiser

Cruisers Forum Supporter

Join Date: Aug 2009
Location: between the devil and the deep blue sea
Boat: a sailing boat
Posts: 17,643
Depending on the size. Small hole forget it and go (you can actually drill it to a fine round shape). Big hole - plate and rivets.

Now, the real question is - is this the only hole and how did it happen to be there?

barnakiel is offline   Reply With Quote


Thread Tools Search this Thread
Search this Thread:

Advanced Search
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
Anodized aluminum mast maintenance phorvati Construction, Maintenance & Refit 9 16-02-2014 09:32
Hts-2000 Aluminum Repair Brazing Rods schoonerdog Construction, Maintenance & Refit 15 24-07-2010 15:05
Aluminum Mast & Stainless Deck Plate mike_hancock Construction, Maintenance & Refit 10 02-07-2009 04:01
changing a spruce timber mast to aluminum sctpc Multihull Sailboats 4 01-09-2008 16:56
need VHF gelcoat repair and diesel repair converted to DVD schoonerdog General Sailing Forum 6 05-04-2007 19:23

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 20:01.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.