Hi LordElsinore!
Thank you for the complement!
High praise indeed coming from a guy who has accomplished so much in this forum!
Glad you found it useful!
It works like a CHAMP at pretty much emptying the ballast when afloat on a level keel and the ballast gate valve cracked open a bit. Just a 1/4 inch gate opening seems to work nicely.
I found that standing by the stern to tilt the boat down at the stern while the air pump is running helps get the most water out of the ballast tank.
Once I see bubbles I gradually close the gate valve then go fwd to turn off/unplug the power. Disconnecting the hose equalizes any residual pressure that might have built up, but given the small displacement of the air pump there isn’t sufficient time between closing the gate valve and getting the pump turned off to be concerned about.
Eventually, if I use it regularly I’ll consider installing it permanently and routing a switch to the pedestal.
Meanwhile I made a 12 VDC extension cord that runs from the pump located under the foot of the V berth back to the cockpit pedestal where I already have installed two ‘cigarette’ plugs for the Chartplotters. That should be sufficient for our current needs for the time being
This is where I’m at anyway to open close the ballast tank gate valve anyway and monitor the progress.
While the gate valve is open the ballast tank only experiences the pressure of only a few inches of water column which is well within its normal designed use capability. If I were to make this a permanent fixture, rather than an as needed use capability, I’d be adding a simple weighted plug low pressure relief valve to preclude any potential concern of pressurizing the ballast tank. (I’d probably end up rigging it up to a set of electrical switches if I let myself get carried away… one rigged to the ballast gate valve so it has to be open for the air pump to turn on…and another to turn power off when the preset relief valve burps.)
It’s nice to be able to empty the water ballast statically while still in the water.
While I’ve only used for convenience I’ve not had to use it as a necessity (as yet
)……..
As far as power draw we have a dual isolation battery set up so that we generally only run one battery at a time and either single battery is more than sufficient to start the engine alone. When we have used the air pump we have to statically empty the full ballast the battery in use was still sufficient to start a cold engine so it doesn’t draw much power to be an issue.
I’d
not ever recommend trying to pressurize the ballast tank…it (the ballast tank) was
never designed to be pressurized. The inflator pump we have works just fine at displacing the water from the tank. A pressure valve isn’t a bad idea but it would have to be a low pressure one calibrated one to be of use/interest.
Best Regards,
Over Easy
was sitting with its rear end down in some mud. Could be the reservoir drained quite a bit in the less-than-24-hours it was anchored near the shore, or maybe I was too generous with my anchor scope.
