XFR water in tray. Will foam drain

Jcary85

Jcary85

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Just built an XFR as a surf/rec ski. I believe the trays are foamed and I’m confident mine is getting water in the tray. Trying to seal it will be a losing battle. Anyone know what type of foam they use and wether or not it will drain if I add a drain? TIA

-Jordan
 
Sparkplug

Sparkplug

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Red Bluff CA
From what I've read. The foam doesnt absorb water. So what minimal area is available to fill. Is probably negligible. Maybe not. It's easy to just drill a small.mqchine screw size hole. And put a screw in after it drains. Works well

Why are you sure it's full of water? I have a 15 hull. One of the oldest ones of the new gen. And mines been BEAT. It's still good. Can you hear water?
 
Baja 252

Baja 252

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LOTO
Our XFS Comp hull is a custom build, carbon with foam, so the bulkhead isn't sealed to the bottom of hull. It has no scupper tube, so any water in the hull flows quickly under the tray and out the two scuppers. I'm not sure what type of foam they used in XFR's, but if it's like ours there is lots of room for water if it gets under the tray. I would add a drain, I don't see a downside to adding it.


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Sparkplug

Sparkplug

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Red Bluff CA
Baja 252 said:
Our XFS Comp hull is a custom build, carbon with foam, so the bulkhead isn't sealed to the bottom of hull. It has no scupper tube, so any water in the hull flows quickly under the tray and out the two scuppers. I'm not sure what type of foam they used in other XFS's have but if it's like ours there is lots of room for water if it gets under the tray. I would add a drain, I don't see a downside to adding it.


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Xfr are totally different in the tray area. The xfs main difference is that bulkhead area and tray.
 
WFO Speedracer

WFO Speedracer

A lifetime ban is like a lifetime warranty !
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Closed cell Styrofoam will not absorb water, two part urethane foam will most definatly absorb water , especially 2 , 3 or 4 lb foam.
 
Jcary85

Jcary85

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Sparkplug said:
From what I've read. The foam doesnt absorb water. So what minimal area is available to fill. Is probably negligible. Maybe not. It's easy to just drill a small.mqchine screw size hole. And put a screw in after it drains. Works well

Why are you sure it's full of water? I have a 15 hull. One of the oldest ones of the new gen. And mines been BEAT. It's still good. Can you hear water?
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When it sits in the shop on a cart with an angle towards the front, the engine compartment will fill with some water in a day or two from one of the seals at a water line so I know there’s water there. I’ll add a drain. Hopefully they used closed cell foam.
 
Sparkplug

Sparkplug

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Red Bluff CA
Jcary85 said:
When it sits in the shop on a cart with an angle towards the front, the engine compartment will fill with some water in a day or two from one of the seals at a water line so I know there’s water there. I’ll add a drain. Hopefully they used closed cell foam.
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The backie Chan I have. From trendsetters came with the screw drains. The literally tappe a ebox screw into the back of the hull at the bottom of each chine. Works good.

Compressed air at low psi might push it out where it's coming in. Or make the hole bigger lol
 
JKMike

JKMike

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Annapolis, Maryland
I went through the same thing with my 2020 Full carbon XFR. The tray sealing was a complete joke. There was a giant gap below my exhaust tube on the inside bulkhead. I filled in that with 3M 4200. The ride plate, pump and intake grate inserts were barely covered or epoxied in place for that matter. I was cleaning out one of the inserts with a Q-Tip and it pushed straight thru into the tray. I ended up filling the bottom of the inserts with epoxy as well as drilling 2 small drain holes, which I used to pull a slight vacuum on the tray and then sucked epoxy all around the inserts.

I would start by drilling at least 1 drain hole as low as you can and then pressure test the tray to like 5 psi. I'm betting you will find quite a few leaks.
 
Jcary85

Jcary85

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JKMike said:
I went through the same thing with my 2020 Full carbon XFR. The tray sealing was a complete joke. There was a giant gap below my exhaust tube on the inside bulkhead. I filled in that with 3M 4200. The ride plate, pump and intake grate inserts were barely covered or epoxied in place for that matter. I was cleaning out one of the inserts with a Q-Tip and it pushed straight thru into the tray. I ended up filling the bottom of the inserts with epoxy as well as drilling 2 small drain holes, which I used to pull a slight vacuum on the tray and then sucked epoxy all around the inserts.

I would start by drilling at least 1 drain hole as low as you can and then pressure test the tray to like 5 psi. I'm betting you will find quite a few leaks.
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Good info thanks! Honestly I feel like trying to seal it is a losing battle. Maybe I’ll add a scupper in the pump tunnel like my XFS. Prob not smart for surf I guess
 
Roseand

Roseand

The Weaponizer
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Jcary85 said:
Good info thanks! Honestly I feel like trying to seal it is a losing battle. Maybe I’ll add a scupper in the pump tunnel like my XFS. Prob not smart for surf I guess
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Get the screw in versiplugs that have a built in debri strainer. No worries about them ever being stuck open
 
JKMike

JKMike

Location
Annapolis, Maryland
Baja 252 said:
Our XFS Comp hull is a custom build, carbon with foam, so the bulkhead isn't sealed to the bottom of hull. It has no scupper tube, so any water in the hull flows quickly under the tray and out the two scuppers. I'm not sure what type of foam they used in XFR's, but if it's like ours there is lots of room for water if it gets under the tray. I would add a drain, I don't see a downside to adding it.


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Did you add the foam in these pictures or is that what it comes with from the factory? I have a carbon XFR and for some reason they used an aluminum thru hull exhaust tube which now has a hole corroded thru it. So i will most likely be opening it up this winter.
 
Baja 252

Baja 252

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LOTO
That’s the factory foam they installed. It’s molded so it fits around the foot holds when I put it back together I added some more pink foam from Home Depot.
 
Pro-pulsion

Pro-pulsion

Location
Ontario, Canada
If it's the foam in a 96 round nose SuperJet...yes...verrrry sloooowly lol. I had the small Versi Plugs in my ski too and as long as the ski is always stored nose up the foam will drain for the most part. My ski was always heavier after every ride, give it a good 2 weeks or more after ride season and it would weight a lot less. There was also always little puddles for about 4-5 days laying on the garage floor after each ride.
 
Jcary85

Jcary85

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Update: drilled holes for versiplugs. Foam is soaked and been draining for two days. Definitely the annoying type of foam and I’ll have to cut the tray open over the winter and remove that crap. More annoying rickter poor quality nonsense.
 
M

mikesx

JKMike said:
In all seriousness, what's wrong with that foam? I never even thought to use cooler foam but I feel like it would work pretty well.
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I believe that is exactly is what’s in my FS1, white styrofoam. And it leaks notoriously, more than likely from the foot hook mounts which appear to be holes drilled thru the double wall, how could they not leak. When I pull the boat out water runs from my drains initially, but doesn’t continue to drip for days afterwards which tells me the styrofoam is staying dry.
 
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