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Composite trailer bunks

WYRD

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Anybody ever use composite trailer bunks? Curious how they work with no carpet and if they hurt the bottom of the boat at all. Also they don't seem to be as heavy duty as wood 2x6s wondered about Flex between the supports.
 
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RitcheyRch

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Had them on an old watercraft trailer and didn't have any issues. Like said, they were really slippery and ultimately removed and went back to wood/carpet bunks.
 

RitcheyRch

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Like so slippery they make it harder to trailer?


I experienced the sea doo moving around a lot on the trailer and it eventually started wearing out the gelcoat.
 

WYRD

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I experienced the sea doo moving around a lot on the trailer and it eventually started wearing out the gelcoat.
That was exactly what I was afraid of. Sounds like I will be going back with good old carpet bunks.
 

cj222

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I had a customer ask me if I have ever used that material and wrapped them in carpet. I haven't tried that yet. Has anyone tried that one yet?
 

poncho

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I had a customer ask me if I have ever used that material and wrapped them in carpet. I haven't tried that yet. Has anyone tried that one yet?
I'd like to think my bunks conform to the bottom of the boat and not the other way around but I know nothing of these.
 

DaveH

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I had a customer ask me if I have ever used that material and wrapped them in carpet. I haven't tried that yet. Has anyone tried that one yet?
price it out. i believe the material is ASTRONOMICAL compared to wood. not worth it
 

cj222

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price it out. i believe the material is ASTRONOMICAL compared to wood. not worth it
Yeah I'm sure that stuff is pricey! I prefer wood myself. His argument was that the wood wrougts and then you have to replace them. I kindly replied with, you will have to redo the carpet at some point when that wears out and then you would spend a lot of time trying to remove the old carpet to re-cover those boards with new carpet so what are you really saving 🤷🏻‍♂️
 

WYRD

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price it out. i believe the material is ASTRONOMICAL compared to wood. not worth it
Yeah I wouldn't see the benefit if you were just going to wrap these in carpet. For my boat it would be about $1,000 to do it in composite including new stainless Hardware. Wood would be less than half of that but would need to be redone and 5ish years.

What kind of wood is the industry standard for regular bunks? I have an aluminum trailer so I'm hesitant to use pressure treated although I believe the supports are actually galvanized and only the trailer frame rails are aluminum.
 

DaveH

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i dont see why you would have to redo it every five years unless you boat a TON or live in a humid environment. as for what kind of wood, that another argument.

i would just buy non treated stuff for me and coat it with a marine spar varnish type sealer, a few coats actually.
 

cj222

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Honestly I use pine. I have seen many trailers come in with pressure treated wood that is crumbling apart. I believe it absorbs a lot of water with all the perforation in them.
 

25Elmn8r

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Honestly I use pine. I have seen many trailers come in with pressure treated wood that is crumbling apart. I believe it absorbs a lot of water with all the perforation in them.
I'm assuming you meant Fir, and not pine.
price it out. i believe the material is ASTRONOMICAL compared to wood. not worth it
Absolutely correct, and on top of that you would need to add additional supports. When using this in a deck situation, it needs to be supported every 12 inches to prevent it from sagging compared to 16 or even 24 inches for real wood.
 

cj222

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I'm assuming you meant Fir, and not pine.

Absolutely correct, and on top of that you would need to add additional supports. When using this in a deck situation, it needs to be supported every 12 inches to prevent it from sagging compared to 16 or even 24 inches for real wood.
Yes lol I did mean Fir. Thank you!

Ask @jstnoc what type of wood he had me hunt down for his trailer build 😄
 

jstnoc

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Yes lol I did mean Fir. Thank you!

Ask @jstnoc what type of wood he had me hunt down for his trailer build 😄
Just high quality Doug for old growth - I bought the CUDA bunk carpet that allows it to breathe so it doesn’t trap water. (First time using it so we will see if it’s worth the extra cash) Think we did dry Doug fir grade 1 from a local lumber yard which will last a lot longer than Home Depot crapwood
 

Emac

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I used it on a pontoon trailer. As stated above it is very slippery but actually worked great to drive the boat on the trailer especially on windy days. My brother still has the pontoon and trailer with the composite bunks. Been on there for 10 years already and shows no sign of breaking down.
 
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