Telwater trailer rusted rear section, common?

[catshark]

does no one fill up the box sections with fish oil anymore? i just dumped 8 litres of fish oil in my trailer refurbishment

[Dignity]

I have done the same to all 3 cross members on my big trailer through use of some vinyl tube, hose joiner fittings, a bit of glue filled heat shrink and some zip ties. Just clip the hose on for a few minutes each while unpacking the boat once home. A also purchased a rust proofing gun with a 1 metre flex nozzle to treat the insides with fish oil properly.

Same here, though I used 3/8 copper pipe, with the male hose fitting, had to drill it out with a 3/8 th bit and it hammered on nice snd tight which meant the hose end just clipped on, the other end I squeezed to give more of a fountain spray into the cross member. Mine is slightly different as where the cross members are welded onto the mainframe it is lower and a gap sufficient to take my fitting.
The Shutz gun I also used but extended it out to 2 m to get deeper penetration, just meant I had to thin the oil just a little bit. It's been on quite a while and I've watched for dissimilar metal issues but all good so far.

[scottar]

does no one fill up the box sections with fish oil anymore? i just dumped 8 litres of fish oil in my trailer refurbishment

I did once I had to replace the cross member on the last trailer as I had to do the last foot or so of the side rails as well and the only other hole was up front where it never saw salt water . On a lot of trailers though, there are so many openings drilled for cables and the galvanizing process that it involves a heap of welding to seal everything up - then you are burning gal off the outside - damned if you do, damned if you don't.

[scottar]

Same here, though I used 3/8 copper pipe, with the male hose fitting, had to drill it out with a 3/8 th bit and it hammered on nice snd tight which meant the hose end just clipped on, the other end I squeezed to give more of a fountain spray into the cross member. Mine is slightly different as where the cross members are welded onto the mainframe it is lower and a gap sufficient to take my fitting.
The Shutz gun I also used but extended it out to 2 m to get deeper penetration, just meant I had to thin the oil just a little bit. It's been on quite a while and I've watched for dissimilar metal issues but all good so far.

My cross members are the same way. Good idea with the gun. No need for mine as I have access in enough places to get to everything that gets wet. The other thing I have made up is a length of electrical conduit with a sprinkler head on one end and a hose fitting (via a poly line compression fitting) at the other. Allows a good wash up any open ended beams.

[Dignity]

My cross members are the same way. Good idea with the gun. No need for mine as I have access in enough places to get to everything that gets wet. The other thing I have made up is a length of electrical conduit with a sprinkler head on one end and a hose fitting (via a poly line compression fitting) at the other. Allows a good wash up any open ended beams.

I just ran 13mm poly pipe up each full length beams with 360° little sprinkler heads every 400mm apart, stopper at one end, male hose fitting the other, just plug in hose, flush for a bit then plug the saltaway un for a final finish. Good idea with the conduit for those shorter lengths though, another project, maybe today.

Edit: I did put the heads in a twisting pattern as I went along. Surprisingly it got past electrical wiring, hydraulic tubing with out getting caught up, maybe I was lucky.

[stevej]

Google does salt dissolve in water faster than cold water

I mainly freshwater fish now so don’t really have to worry about the trailer
but when I lived in Sydney I had a hot and cold mixer water tap installed on a outside wall and washed the trailer down with that
it removes the salt faster and more completely