Has anyone repaired a rusty trailer?

generator12

Senior Chief Petty Officer
Joined
Jul 9, 2010
Messages
666
I've got an '86 Four Winns on what appears to be the original EZ Roller trailer. The previous owner painted the whole thing white, and the paint is holding up well with some very minor rust stain showing through the paint at a couple of points. Nothing to worry about there. The side rails, cross-members, and roller supports appear to be solid.

With one exception:

The cross-member that secures the single rail at the front of the trailer to the side rails is pretty well rusted on the bottom, as are the bottoms of the side rails at the point where the cross-member clamps to them. This is only at the bottom as the sides and top appear solid. And the rust appears to be confined to the points where they join.

My thoughts and questions include the following:

1. The rear and main body of the unit, which stand to get wet when launching, show no such signs. The boat has not seen salt water.
2. Is there a reasonable method for checking the metal condition throughout the trailer? (Drilling holes at numerous points is an option I'd hope to avoid.)
3. I could weld new plate over the bottoms of the rails overlapping onto solid metal, but I'm not sure whether this is the best - or only - approach. Suggestions?
4. Is this sort of thing common to older trailers? (My old '77 Sno-co had no such condition.)

If anyone has dealt with anything similar to this, I'd love to hear about your experience.

Thanks guys.
 

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MTboatguy

Fleet Admiral
Joined
Jul 8, 2010
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8,988
Re: Has anyone repaired a rusty trailer?

Looks like it is the perfect spot for road splash, to concentrate, if it was my trailer, I would sand blast the whole area, then put a rust neutralizer on it and then prime and paint again. It looks worse than it really is to me.

I have a trailer under my 1960 boat that has a lot of rust on it, I will be sand blasting it, then I will rust neutralize, and have it powder coated in the spring.

But again, to me, it really does not look as bad as it could be.
 

rwidman

Lieutenant
Joined
May 27, 2004
Messages
1,396
Re: Has anyone repaired a rusty trailer?

I've got an '86 Four Winns on what appears to be the original EZ Roller trailer. The previous owner painted the whole thing white, and the paint is holding up well with some very minor rust stain showing through the paint at a couple of points. Nothing to worry about there. The side rails, cross-members, and roller supports appear to be solid.

With one exception:

The cross-member that secures the single rail at the front of the trailer to the side rails is pretty well rusted on the bottom, as are the bottoms of the side rails at the point where the cross-member clamps to them. This is only at the bottom as the sides and top appear solid. And the rust appears to be confined to the points where they join.

My thoughts and questions include the following:

1. The rear and main body of the unit, which stand to get wet when launching, show no such signs. The boat has not seen salt water.
2. Is there a reasonable method for checking the metal condition throughout the trailer? (Drilling holes at numerous points is an option I'd hope to avoid.)
3. I could weld new plate over the bottoms of the rails overlapping onto solid metal, but I'm not sure whether this is the best - or only - approach. Suggestions?
4. Is this sort of thing common to older trailers? (My old '77 Sno-co had no such condition.)

If anyone has dealt with anything similar to this, I'd love to hear about your experience.

Thanks guys.

You have a 24 year old steel trailer that has been dunked in water thundreds, if not thousands of times and left to drip dry. Water collects in joints and seams and inside hollow members. The previous owner painted it and you don't know the condition before he painted it. It's now showing signs of rust in structural components.

A fiberglass boat will out live a steel trailer. If you value your boat and don't want your photo on the 6 o'clock news, I would suggest either junking and replacing the trailer, or having a competent trailer shop give you a cost estimate for making it safe and reliable again.

That's my $.02
 

Dkrager

Petty Officer 2nd Class
Joined
May 16, 2010
Messages
110
Re: Has anyone repaired a rusty trailer?

If it were mine, I would cut that whole tongue off the front just behind the rust and re-work that area.
I'm a experienced welder though, so......

You might be able to weld a plate on the inside and bottom of those areas and places gussets to that cross piece.
 

bob1340

Petty Officer 1st Class
Joined
Jun 12, 2010
Messages
287
Re: Has anyone repaired a rusty trailer?

If those pictures are the worst of it I'd say it's a very fixable problem Rust is ugly, and that looks like moderate surface rust which can be dealt with. Toss the bolts. Grind off the rust. POR 15 the steel and repaint the trailer.
 

jeeperman

Lieutenant Commander
Joined
Aug 2, 2001
Messages
1,513
Re: Has anyone repaired a rusty trailer?

Although that area looks bad, it might not be bad enough to junk the trailer.

The "bad" part is the tubular members on the trailer as they were never painted on the inside and will rust from the inside out.

With several coats of paint, the true condition of those can be hidden from view.

If there are blistered paint spots, those are there due to rust from the inside out.
At some point the steel will get punky and weak even though the paint looks okay.

You could try the hammer tapping to listen for dead spots in the steel.
With a pointy weld chipping hammer you could do the same to see just how punky the steel might be.
Or you could go high tech and find a local machine/steel/body shop , etc. that has an ultrasonic metal thickness tester to determine how much good metal is left.
 

ezmobee

Supreme Mariner
Joined
Mar 26, 2007
Messages
23,767
Re: Has anyone repaired a rusty trailer?

The rusted metal there looks to be pretty thick with just surface rust. Clean it up and paint it. However, as mentioned, I'd be concerned about the box frame rusting from the inside out. Check it out carefully. I had it happen to me and am no longer a fan of fully boxed trailers.
 

generator12

Senior Chief Petty Officer
Joined
Jul 9, 2010
Messages
666
Re: Has anyone repaired a rusty trailer?

Thanks guys for the time/attention. All good comments and I'll weigh them as I decide what to do here.

I guess it's interesting that I have never heard of someone losing a boat in transit due to outright trailer failure...nor does there seem to be discussion among boaters regarding refurbishing trailers - on this or other forums - even though the trailers tend to be as old as the boats riding on them.

In any case, I have work to do.

Again, thanks all...!
 

ezmobee

Supreme Mariner
Joined
Mar 26, 2007
Messages
23,767
Re: Has anyone repaired a rusty trailer?

I guess it's interesting that I have never heard of someone losing a boat in transit due to outright trailer failure...nor does there seem to be discussion among boaters regarding refurbishing trailers - on this or other forums - even though the trailers tend to be as old as the boats riding on them.

Worst case scenario :eek: http://forums.iboats.com/showthread.php?t=367302

Also, we've had some great trailer refurbishments done on here but they are typically buried in the members' boat restoration threads.
 

rwidman

Lieutenant
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Messages
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Re: Has anyone repaired a rusty trailer?


DSC00140.jpg


Thank you for providing a reality check.
 

generator12

Senior Chief Petty Officer
Joined
Jul 9, 2010
Messages
666
Re: Has anyone repaired a rusty trailer?

Wow! Ezmobee, thanks for the link!

Interesting that the unit in the link showed its rust in nearly the same area as my trailer - near the junction of the two side rails - and not in the rear where it might be most expected.

Hmmm...!
 

bob1340

Petty Officer 1st Class
Joined
Jun 12, 2010
Messages
287
Re: Has anyone repaired a rusty trailer?

Wow! Ezmobee, thanks for the link!

Interesting that the unit in the link showed its rust in nearly the same area as my trailer - near the junction of the two side rails - and not in the rear where it might be most expected.

Hmmm...!

Wow is the correct word!

I'd take this as advice to set the trailer hitch up so the front is slightly higher than the rear to prevent water and gunk from flowing up there. And I'd make attempts to seal the tubes as good as possible and put drains in the rear.
Pretty scary.
 

Wingedwheel

Lieutenant Junior Grade
Joined
Jun 16, 2009
Messages
1,071
Re: Has anyone repaired a rusty trailer?

Generator The points on your trailer tend to have the most towing stress as thats the point between the hitch and the axle that gets the most flex. If you can weld, I'd suggest drilling a few holes to check the integrity of the tube structure and if it appears solid on the inside some plate and gussets should take care of any problem. If you do weld its also easy enough to cut out the rusty tube and replace.My 02
 

generator12

Senior Chief Petty Officer
Joined
Jul 9, 2010
Messages
666
Re: Has anyone repaired a rusty trailer?

Wheel,

Yeah, I do weld, and I can see that I'll be doing a bit of it on this trailer.

My original post was intended to hear from anyone who has confronted a similar situation on his piece and to learn from others' experiences. I'm still struck by the absence of stories of failures of trailers (other than the one mentioned in the prior post) given what must be a fairly common condition.

In any case, all the responses have put me into the right mind-set to attack my own problem effectively.

First I've got to determine whether the rusting has occurred anywhere else on the trailer. Then it's "cut and paste" so to speak.

Once again, I appreciate the responses. They are each valuable to me.
 
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