Trailer Repairs - 30yo steel trailer rust

A forum for discussing issues relating to trailers and towing MacGregor sailboats.
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JamesToBoot
Engineer
Posts: 158
Joined: Thu Aug 14, 2025 11:59 am
Sailboat: MacGregor 26S
Location: SC

Trailer Repairs - 30yo steel trailer rust

Post by JamesToBoot »

Its been a bit since my last update. Some injuries, some surgery, just now starting to get back into things:

I last left you with the boat off the trailer attempting to replace the bunks and working on the centerboard raising (see my other thread regarding the centerboard).

Well, I got a good look at the trailer: bunks were rotten and it looks like the trailer was used in salt water.
  • Took off the wheels, spare, bumper bits, lights, etc.
  • Stripped the wiring (had issues w grounding and was cracking thru to the conductor).
  • Took off what was left of the winch (first time retreaving the boat and the spindle wrenched in half from the rust).
  • Got it sprayed with rust converter acid.
  • Got several week spots rewelded and/or a doubler added.
  • Painted with Rustolium's rust converter paint (just what I had on hand).
  • New bunks made, wraped, and mounted (using 2x4 regular pine and boat bunk cloth).
  • Fixed and regreased the welded on trailer hitch jack (a cotter pin inside was broken, everything was dry and rusted).
  • Reinstalled the lights, new winch, rubber bits, wheels, etc
  • Rewired with a prewired, jacked covered loom. Fixed multiple issues with grounding (rust converter and paint did a good job sealing the metal).
We're now set for the next 30 years!!!

Putting the trailer back under the boat was much easy going then removing it; one) I had already done it in reverse, and two) I used the the winch hooked to the pull-pit to skooch the trailer back.

[pictures] no idea what I did w the pictures. Ill upload them when I find them:
Image

Image

The boat is finally read for the second test!!! (The first test was to see if it would float and if the water ballast leaked).
Since the first test:
  • the above trailer was fixed
  • the centerboard winch was added
  • the cotter pins were replaced with bolts (half of which were already rusted bolts)
  • other stuff I can't remember
Last edited by JamesToBoot on Thu Jan 29, 2026 4:00 am, edited 1 time in total.
-james
Novice Sailor
'91 26S, fixer-upper, 55lb w 280ah lithium, need stern rail
Cruising Grounds: Lake Murray, youtube
OverEasy
Admiral
Posts: 2946
Joined: Mon Sep 28, 2020 11:16 am
Sailboat: MacGregor 26X
Location: NH & SC

Re: Trailer Repairs - 30yo steel trailer rust

Post by OverEasy »

Nice boatport!
I’m envious! :wink: 8)
JamesToBoot
Engineer
Posts: 158
Joined: Thu Aug 14, 2025 11:59 am
Sailboat: MacGregor 26S
Location: SC

Re: Trailer Repairs - 30yo steel trailer rust

Post by JamesToBoot »

OverEasy wrote: Mon Jan 26, 2026 10:35 am Nice boatport!
I’m envious! :wink: 8)
I lucked into it. Just happened to be the previous owners of our house had an RV port.
-james
Novice Sailor
'91 26S, fixer-upper, 55lb w 280ah lithium, need stern rail
Cruising Grounds: Lake Murray, youtube
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