Replacing trailer bunks
 

Decent discussion about it a little bit ago.
https://www.offshoreonly.com/forums/...composite.html

I wouldn't. Treated wood will not take sealer (if you do that). I used untreated fir and sealed it. Best is cypress if you can find it. When you put carpet on, be sure to leave a little of the bottom of the bunk open for drainage.

What are you hauling with 4X10X14' bunks? As far as your question, I used treated lumber and carpeted over, no sealant of any kind. I used 2X6 of various lengths for my 39' NT.

34 Phantom, that's what is on the trailer now so I just wanted to make it the same

I had to replace the bunks years ago. Back the boat down and the bunk broke off (rot). Now I'm thinking how do I get the boat out of the water for a few days. I called my buddy and asked if the buyer of his boat picked it up......."yeah its gone".....Great can I put my boat on your lift? He left the lift down and I went boating all day and put it on his lift at the end of the day! Day saved!

Whos trailer is it?

When I wanted to redo my Eagle I called them and they sent me carpeted bunks ready to mount.

Way less time and aggravation.

Can't remember, when I check last season they were not longer in Business that I why I did not change them last season.

Many years ago, I custom ordered some 4"x10" long bunks for a bunk trailer. It wasn't a big deal, and was not terribly expensive. I think I ordered Cypress which would be the best wood to use. I don't recommend treated lumber, and neither does Myco. Just plain Pine UNLESS you go to Cypress.

The worst think I found about the bunks "wearing" on the typical bolt-together aluminum trailer is that their were only a couple of through bolts supporting ALL the weight of the boat. This is because my bunks were not touching the trailer frame, but were suspended by those bolts above it.

Either have those big bunks setting all the way down on the trailer frame cross members, OR install some small blocks of wood to make up for the suspension that the through bolts are supporting. This was on a POS Rocket trailer under my 26' Sonic. I was much better when I was done with it.

https://www.easternmarine.com/magic-...k-board-pt5202

freight would cost almost as much.

What did that cost and how long was the wait??

The 2 main bunks on my Pantera's Owen & Son's aluminum trailer were like his.
4 x 10's sitting vertically on the I Beams. The tops of the 4 x 10's were cut at the angle of the boat bottom.

Mine are flat but same as you stated

I did.. :).

Only downfall is they are REAL slippery

..When pulling the boat out I now have to leave the boat idling in gear until the winch get hooked


or it slides back in the water as you're walking up the bow.... :picard1:


https://cimg7.ibsrv.net/gimg/www.off...e185a6d5ef.jpg

And hook up the safety chain before pulling up to far. Have seen winch straps snap.

As someone previously posted treated lumber has a corrosive effect on the hardware used to fasten the bunks to the trailer.

Not true, stainless or hot dipped galvanized will be fine.

What then caused the galvanized lag bolts to erode ? I backed down a ramp, the boat floated free and so did two of the four bunks. The fasteners were eroded to a pointed shape with no thread left to grip the wood. This is on a fresh water use only trailer.

Most decks in America would fall off the house if that was the case. Finding fasteners that are compliant with treated lumber is not hard, we use numerous types when we build decks. There has to be some sort of electrode potential between aluminum (is your trailer aluminum?)/steel/galvanized products...it's not the treated lumber.

If you do a little Googling you will see that its not uncommon for pressure treated wood bearing the mineral copper to be very hard on galvanized fasteners.

Hot dipped?

Buy cypress bunks.Dont brother with any other wood. No other wood can compare. Then carpet them with something suitable.

my boat slips with just carpet. Plastic sounds dangerous????

The stuff doesnt rot. They find it in the bottom of rivers sitting for decades