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Bars Open
VC I am interested to know if you plan to fill the cavities with polystyrene?
Not much visual progress today...had a sleep in then went and set net and got more than quota of nice fat flounder....released excess of course.
Got her straight and welded out the last miters and worked out my keel line.Patterning tomorrow.
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I reckon bin the 8hp and go more this way
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Why a bad idea? To my non technical mind if your pontoon gets a hole (however that might happen), it will leech water into the cavity and cause a list when it fills up but if the cavity is full of polystyrene then bugger all water could enter because the the polystyrene is displacing the air in the cavity.
If a pontoon gets a hole it will likely be at the bottom,if it is at the bottom it can only fill x amount before it has compressed the air inside enough to equal the water pressure and it will not fill anymore(fill the sink and lower a beer glass upside down into it and you will see what I mean),also one is unlikely to hole a pontoon while stationary (when it could possibly fill with water and be an issue), there will be 4 separate sealed chambers so even if say one developed a crack while underway and filled while fishing at anchor while I would be pissed at my shoddy design it still wouldn't sink or even get close to sinking.
The reason I went with a pontoon design is so if swamped(short transom remember) or I have been a dick and take a greeny over the bow it will want to float upright and should be bailable/restart motor fuck off etc.
Pontoons themselves do absolutely nothing for stability until you get in a situation where there is lots of water on the inside of the boat...then they work.
The "stability" people rave about with their various pontoon hulled boats has absolutely nothing to do with the pontoons, hull shape gives(and takes away) stability.
Be OK if you never wanted any welding done on the boat ever again, crack it/scrap it.
FYI for all of you.
If you crack your alloy boat somewhere and would like it fixed DO NOT SILICON UP THE CRACK!
Just let the fucker leak untill you can get it fixed, in an emergency Kneed it or similar will do but silicon in cracks will basicly tripple the cost of any repair and the repairer will call you a cunt behind your back....so now you know ay :thumbsup:
Is bitumen tape safe?
nooo never fill pontoons
6mm bolt? why not a plastic removable bung like senator use?
open it on a hot day and get that satisfying hiss
but mostly because of dissimilar metal reaction
6mm bolts are effectively free and indestructable.
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@veitnamcam
That was my thoughts too.
Cheers
Pete
Hull pulled together and tacked.
Used the other cnc option I bloody should have used from the start and it was perfect. 14degree dedrise at transom varying to 25deg 1800 forad so she's pretty flat but it's built for estuaries.
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Looking minties!
this has been a very interesting topic, thanks for sharing and good luck. Impressive efforts.
Mean!
What kind of beer are you cracking on the front, surely not wine...
I'm not a boat man, I have nothing intelligent to add.
Not actually doing f all but putting some brain hours into it today.
The edge of the tread plate is a 40mm fold that combined with the keelson that it will be plugwelded to will hopefully provide more than enough longitutdinal hull stiffness,another sealed chamber of reserve boyancy,something to lock your feet into when pulling in a net/long line/ 20pound plus snapper.
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I am not sure I like the line of the floor relative to how I think it will sit at rest and on the plane and may taper the press forad so the floor in the bow ends up a little lower and narrower.
It certainly does not need more reserve boyancy.
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That is amazing to me VC.
Not a boat man myself but looking good, no space for fuel bladders under the floor? Seen this done on a couple of boats I've been in
Heaps, could probably put 300l under the floor but the 8hp might take a year or two to use a tank ;).
I did think about a inbuilt tank but the more I thought of it the more impractical it seemed in a dingy.....I hope two real men should be able to carry this down a beach if no trailer access is available. At the moment I can still lift the bow or stern quite comfortably,I wouldnt want to carry it very far but I am quite lazy.
In built tanks with today's gas are just a pain with rotten fuel. Took mine out and went to totes. Is it time to start the name game??:)
It's taking shape nicely. You should consider a career in fabrication.:P
I like the idea of having the tote tank out of the way so perhaps a long fuel line and tote tank under floor foward ? plus are you adding rod holders.. I've seen the ones that you slip into rolock holes and was thinking the same for you low proflie lugs or something... I know this is set up for nets and less is more.. but it will end up snappering also I'm certain! Very impressed with the progress..my biggest thought is comfort and ease of use for yourself and kin...will you be side seating her ?
really enjoying this thread, great project, keep posting.