Hatch keeps popping (one way valve?)

[Xcesive8]

Hi all,

Has anyone ever used a one way air valve in the hull of there boat?

Ive been having some huge blow overs with my Cat, ive secured the hatch with screws all the way round, but for example @ 140kph the other day it still some how managed to pop the hatch on impact.
The pressure that builds up inside when it all compresses on impact must be quite alot, this boat is very heavy once 4 x 6s 5000 packs are in.
So i thought if i install a valve to release the preesure at this time it could prove effective.

Anyone ever herd or tried this?

Thanks for any help

[crabstick]

a small duckbill drain might work?

[NORMKRIS]

Ball drain

A simple ball drain might do the trick. Some rc boaters use them to drain water from hull while running. Lets water/air pressure out but shuts off water from entering hull when you slow down or stop. You do have to keep drain clear of debrie and any other "crap" that might hinder the ball from closing properly.

I believe Steve at OSE handles these......very inexpensive.

Norm Kris Sr.

[Steven Vaccaro]

My h&m drifter is falling apart after many years worth of high speed crashes. So another question is why is it blowing over so much? How many crashes can the hull take like that?

[crabstick]

I personally dont trust autobailers, one little bit of crud in them and they are auto-sinkers.

[m4a1usr]

Its not hull pressure dislodging the canopy from the hull its probably hull flex or canopy flex. For that sort of structure movement the only way to secure your hatch is to use mechanical attachment. An air valve or similar remedy will not effect the repair you seek. Choices of brackets, zeus fastners, stiffners or hatch tie downs are your better options.

John

[Fluid]

John makes a good point. The trapped air pressure may be helping to hold the hull together rather than contributing to failure. The model has a huge amount of energy, almost twice that of an elephant rifle bullet. That puts a huge amount of stress on the hull when it hits something hard - more than it was designed to take. The real solution is, as Steven suggests, keep it from blowing over.


.