Author Topic: Replacing mast step bolts  (Read 3270 times)

cpbova

  • P323
  • Newbie
  • *
  • Posts: 2
  • Karma: 0
  • P323 Enthusiast
    • View Profile
  • Model: P323
  • Vessel Name: Salute
  • City: Trumbull
  • State: CT
Replacing mast step bolts
« on: February 22, 2017, 06:51:07 PM »
What is the preferred method to repair a stripped mast step bolt hole.  I currently have 3/8" galvanized lag bolts.  These are very rusted, so I am replacing them with 316 SS bolts.  While replacing them I had one that will not tighten. I have searched the web, but I cannot find any recommended repair procedures.  As I see it I can install a longer bolt, install a bigger bolt, fill the hole with epoxy or drill a new hole. Just wondering if anyone has performed this repair before and what they did.

Rusty Pelican

  • P323
  • Sr. Member
  • *
  • Posts: 236
  • Karma: 5
  • http://rustypelican.blogspot.com/
    • View Profile
  • Model: P323
  • Vessel Name: Rusty Pelican
  • City: Hingham
  • State: MA
Re: Replacing mast step bolts
« Reply #1 on: February 23, 2017, 12:04:40 PM »
Is your mast step the original powder coated carbon steel?
When I replaced my step some of the original screws would not back out.
My mast step screws were stainless. I sheared them off and ground them down flush.
I drilled new pilot holes near the old ones for the new mast step.

Dolce_Vita

  • P323
  • Hero Member
  • *
  • Posts: 512
  • Karma: 9
    • View Profile
    • S/V Dolce Vita
  • Model: P323
  • Vessel Name: Dolce Vita
  • City: Pasadena
  • State: MD
Re: Replacing mast step bolts
« Reply #2 on: February 23, 2017, 11:42:58 PM »
When I replaced my mast step with a welded aluminum one made from 1/2" plate, two of the galvanized bolts came out and 2 didn't, shearing off the heads.
Since the step had slotted holes, I just drilled new holes for the SS lag bolts.
Be VERY careful drilling lead, as it can gall up and sieze and break the drill bit.  Go very slow, backing out the bit very often to allow the flutes on the bit to unload.
@(^.^)@  Ed
1977 P-323 #42 "Dolce Vita"
with rebuilt Atomic-4

cpbova

  • P323
  • Newbie
  • *
  • Posts: 2
  • Karma: 0
  • P323 Enthusiast
    • View Profile
  • Model: P323
  • Vessel Name: Salute
  • City: Trumbull
  • State: CT
Re: Replacing mast step bolts
« Reply #3 on: February 24, 2017, 06:38:28 AM »
Thanks for the advice.  Since my bolts came out I might just go up a size and reuse the same hole.  I think the step bracket will accept the larger bolts.

Captain Bri

  • Brian
  • Ensign
  • Sr. Member
  • *
  • Posts: 142
  • Karma: 2
  • Sailmaker
    • View Profile
    • RedSkySails.com
  • Model: Ensign
  • City: Anytown
  • State: Ct
Re: Replacing mast step bolts
« Reply #4 on: May 24, 2018, 10:39:49 AM »
My old mast step is out and I am waiting for a new one from DC Products.  The old bolts are just stubs of rust, nothing left to grab onto, vice grips just turn them to mush.  I am reluctant to grind them down because it seems that the positioning of the new step is critical.  I was thinking of leaving the old bolts stubs in for alignment purposes and drilling four new holes in the slots when I test fit the new mast step. 

Any comments on this approach?

About how long should the new bolts be (how far into the sub-surface)?  Maybe 3 inches?

« Last Edit: June 05, 2018, 09:31:41 PM by SeaFever »
Men and Ships; Rot in Port

Captain Bri

  • Brian
  • Ensign
  • Sr. Member
  • *
  • Posts: 142
  • Karma: 2
  • Sailmaker
    • View Profile
    • RedSkySails.com
  • Model: Ensign
  • City: Anytown
  • State: Ct
Re: Replacing mast step bolts
« Reply #5 on: June 05, 2018, 09:36:26 PM »
I ended up using the old studs for marking/alignment, cut them off, and replaced with 3/8" x 2.5" bolts. They seemed plenty long enough as I would guess there is about an inch of fiber before penetrating the lead.
Men and Ships; Rot in Port