Mast Step Plate - 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 > General Interest Forums > Gear & Maintenance
 Not a Member? 
  #1  
Old 12-10-2010
SailingWebGuy's Avatar
Senior Member
 
Join Date: May 2010
Location: NJ
Posts: 233
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 4
SailingWebGuy is on a distinguished road
Mast Step Plate

Just a quick question..

How should a mast step plate be secured to the deck?? Mine was secured with 4 screws that seemed extremely inadequate. Should they be through bolted? I can tell that there were repairs done to that area at some point (older boat) and a very large chance that whomever did the repairs did not re-secure the plate correctly.

P.S. I apologize if I'm using the wrong terminology for the plate I'm referring to. It is that plate that the mast slides down over. Not the SS plate that can be using to attach blocks to.

Thanks a ton!
__________________
My complete refit is taking completely too long!
Reply With Quote Share with Facebook
  #2  
Old 12-10-2010
Senior Member
 
Join Date: Aug 2008
Location: Pittsburgh, PA
Posts: 198
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 6
rayncyn51 is on a distinguished road
Our Catalina 30 uses 4 lag screws approximately 3/8" x 1 1/2". There's not a lot of lateral load on that plate, most of the force is downward.
__________________
Are we there yet?
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote Share with Facebook
  #3  
Old 12-10-2010
SailingWebGuy's Avatar
Senior Member
 
Join Date: May 2010
Location: NJ
Posts: 233
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 4
SailingWebGuy is on a distinguished road
Hey Rayncyn!

Ok, thanks! Mine were slightly smaller. I'll get something a little bigger than what came out. Just wanted to make sure it shouldn't get through bolted or something.

Thanks!
__________________
My complete refit is taking completely too long!
Reply With Quote Share with Facebook
  #4  
Old 12-10-2010
mitiempo's Avatar
Senior Member
 
Join Date: Sep 2008
Location: Victoria B.C. Canada
Posts: 6,758
Thanks: 0
Thanked 49 Times in 40 Posts
Rep Power: 6
mitiempo will become famous soon enough
6 through bolts on my CS27. I don't think screws are enough.
__________________
Brian
Living aboard in Victoria Harbour

Last edited by mitiempo; 12-10-2010 at 10:29 AM. Reason: add
Reply With Quote Share with Facebook
  #5  
Old 12-10-2010
Senior Member
 
Join Date: May 2006
Posts: 238
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 8
mike dryver is on a distinguished road
Sailingweb if the heads of the screws fit properly then they are the right size. just pull one if you have not already done so and check shank diam to hole diam. a mast step is in compression load not shear load unless a stay or shroud fails
Reply With Quote Share with Facebook
  #6  
Old 12-10-2010
SailingWebGuy's Avatar
Senior Member
 
Join Date: May 2010
Location: NJ
Posts: 233
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 4
SailingWebGuy is on a distinguished road
Thanks to everyone for the replies!

I bundled up and climbed out there to take another look. It does appear that they are 3/8 x 1 1/2...remembered them being smaller for some reason.

I filled the holes with epoxy a while back. In the spring I'll drill em out when its warmer and sealants will cure correctly.

Managed to snap a little pick of it.
Attached Thumbnails
Mast Step Plate-maststep.jpg  
__________________
My complete refit is taking completely too long!
Reply With Quote Share with Facebook
  #7  
Old 12-10-2010
sailingdog's Avatar
Telstar 28
 
Join Date: Mar 2006
Location: New England
Posts: 43,291
Thanks: 0
Thanked 8 Times in 8 Posts
Rep Power: 13
sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice
Ideally, the mast step plate should be through-bolted to the compression post or bulkhead.
__________________
Sailingdog

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

If you're new to the Sailnet Forums... please read this
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
.

Still—DON'T READ THAT POST AGAIN.
Reply With Quote Share with Facebook
  #8  
Old 12-10-2010
SailingWebGuy's Avatar
Senior Member
 
Join Date: May 2010
Location: NJ
Posts: 233
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 4
SailingWebGuy is on a distinguished road
Aww man! It's two for through bolting and two for not. I can't decide a tie breaker.

I think I will through bolt...if only because it seems stronger.
__________________
My complete refit is taking completely too long!
Reply With Quote Share with Facebook
  #9  
Old 12-10-2010
jaschrumpf's Avatar
1975 Newport 28
 
Join Date: Jun 2002
Location: Monrovia, MD
Posts: 573
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 12
jaschrumpf is on a distinguished road
There is no need for through-bolting. On a deck stepped mast the load is straight down on the plate and the lateral forces are low. Deck stepped masts are held in place only by the lip of the plate; I know my mast doesn't have any screws or bolts holding it to the plate.

Since you filled the original holes with epoxy, once you drill them out again for the proper screw size you will be good. No need to through-bolt; but if you are doing other repairs that make it possible and can cover everything up, there's certainly no reason not to go the extra mile.
__________________
S/V Free Spirit

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Monrovia, MD
Reply With Quote Share with Facebook
  #10  
Old 12-10-2010
mitiempo's Avatar
Senior Member
 
Join Date: Sep 2008
Location: Victoria B.C. Canada
Posts: 6,758
Thanks: 0
Thanked 49 Times in 40 Posts
Rep Power: 6
mitiempo will become famous soon enough
I can't think of any item on the deck of a sailboat in this size range that should not be through bolted.
__________________
Brian
Living aboard in Victoria Harbour
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
How big are the holes in your mast step plate? jarcher Gear & Maintenance 3 02-01-2010 08:25 AM
how to mast plate MtHopeBay Gear & Maintenance 2 12-14-2009 09:43 PM
Is there a step by step for a stepping of the mast? GilStump Gear & Maintenance 5 07-15-2009 07:45 PM
Mast Plate seal weephee General Discussion (sailing related) 1 07-08-2009 07:32 PM
Where to get a custom mast step plate? jarcher Gear & Maintenance 2 07-05-2009 01:15 PM


All times are GMT -4. The time now is 09:40 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