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Old 28 September 2012, 10:34   #11
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This may be a null experience given you visually see water coming in from those braces, but, on my 733 the bilge connects all the way to the bow. I noticed I always had significant amounts of water in my bilge even though I drain it on the boat ramp after every use( bad practice, I know, but I filter the water thru an oil diaper first). The last time I used her I drained her on the ramp until the bilge appeared dry. Then I drove her up the steepest hill I could find with the bung open. 2 miles up to the top of this steep ass hill going only 20 mph and I stop, run to the back and check the flow. She was still pissing at nearly full stream!! I waited a good five more minutes until she was done. Haven't used her since, but I am confident that was the main issue for water in my bilge.
Hope that may help with your scenario
Goodtimes,
AV
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Old 28 September 2012, 14:43   #12
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I wouldn't think that 5200 or Sikaflex would be the right choice. I want to be able to remove them!!! I just need to a make the screwholes a bit more watertight. What's your suggestion????
I'd say a polysulfide caulk (marine caulk: Lifecaulk or similar.)

jky
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Old 29 October 2012, 01:27   #13
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Do the bolt holes really go all the way through? I'd like to know that. Seems unlikely. But interesting if they do.

I have my 730 on a boat bag, so there is no possibility for water to enter those bolts when at the dock. But I do notice a similar amount of water ingress.

Another possibility is simply condensation in the outer hull areas. When you drive her after being at the slip, it's possible this water is sliding aft and draining into the main bilge. My sailboat has sealed compartments and it's amazing how much water can accumulate from simple condensation in a closed space.

I did have her a bit bow heavy on the boat bag and noticed that the forward hatch is not sealed (Needs the hatch seal), the rain water ran forward and through the forward hatch rather than out the scuppers aft and I had a heavy bilge full of water after only a few heavy rain days.
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Old 11 December 2012, 19:24   #14
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It should be fairly easy to use a shop vac to blow into the bilge hole and use a bucket of sudsy water dousing all the fittings to find the leak.

If those bolts go all the wAy through to the bilge then something is very wrong.
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Old 13 December 2012, 01:39   #15
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Ok it looks like the inserts do go all the way through the laminate into the tube riser. They are bedded into epoxy. I suppose they could leak anyway. Pressure test should identify.
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Old 13 December 2012, 02:05   #16
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Ok it looks like the inserts do go all the way through the laminate into the tube riser. They are bedded into epoxy. I suppose they could leak anyway. Pressure test should identify.
A pressure test will be a little tough being that it's an inboard and there are numerous above deck locations that aren't airtight. I'll put up some pictures next time I'm at the boat...maybe even a youtube video!

Thanks. Keep the ideas coming!
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Old 14 December 2012, 00:34   #17
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One thing I noticed with my hull on the trailer is that the boat does not sit bow high enough to drain all the water. I have to stick a block of wood on a car jack to get it high enough to drain all the water out. Any chance you just got some water hiding up front that finally drains back on the steep launch ramp?

Jason
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Old 15 December 2012, 02:12   #18
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One thing I noticed with my hull on the trailer is that the boat does not sit bow high enough to drain all the water. I have to stick a block of wood on a car jack to get it high enough to drain all the water out. Any chance you just got some water hiding up front that finally drains back on the steep launch ramp?

Jason
Avius suggested that also. I need to find a steep hill by my house and check it out. I think that my Freeman hatch is relativity waterproof but not 100%, also the two stainless sleeves up near that hatch (for storing the blue light/PA arch) drain to the bilge, and that the the seams where you stand at the helm all might let a little water in either with rain or from rinsing the boat after it's previous outing.

Jason, how's the bracket coming? Same direction with aluminum or thinking about fabricating fiberglass?
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Old 16 December 2012, 00:57   #19
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Jason, how's the bracket coming? Same direction with aluminum or thinking about fabricating fiberglass?
Still thinking aluminum, its what I have access and knowledge to build. Not sure if I mentioned here but got a quote for the aluminum that was over $3k !! Of course zodiac spec'd the unobtanium of aluminum. Thinking of just going 5052 but that's a decision I have to make. I will update my thread, I've made some progress.

Jason
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Old 17 December 2012, 17:49   #20
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If you pressurize the limber hole from the center to the outboard section you should be able to get enough pressure to make lots of soap bubbles everywhere it leaks. Transom seams or whatever. Unless there are other holes as big as the limber hole.
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