Re: [PSUBS-MAILIST] pressure compensated outboard

That was my first thought, if any components would be affected. I can't see where there would be a problem, anything that has gasoline in it would be safe as far as pressure is concerned. I'm thinking a 20 hp or so outboard, electric start, fuel injected. I think most of those are water cooled so that would be a plus. I would just turn the whole cylinder to steer, and mount the thing in there good. Have a fuel line that could be valved off, the fuel tank might have to be pressure resistant.

On Fri, Feb 25, 2011 at 5:58 PM, Alan James <alanjames@xtra.co.nz> wrote:

An ambient outboard!

Sounds like an idea with a lot of potential Brian.

I'm wondering if there are any components that may be affected by the air pressure.

How big a motor are you envisaging? What sort of motor controls?

Regards Alan

----- Original Message -----

From: ojaivalleybeefarm @dslextreme.com

To: personal_submersibles

Sent: Saturday, February 26, 2011 12:57 PM

Subject: [PSUBS-MAILIST] pressure compensated outboard

I have an idea for a pressure compensated outboard engine so as to give surface power for my sub. Basically it would be a "can" that would cover an outboard engine with an opening on the bottom. There would be a float valve located near the bottom of the opening so when I submerge, as the water begins to move up into the cylinder, compressing the air, the float valve would inject air. That way it would keep a constant volume of air in the outboard engine compartment. As you assend the extra air would simply expand out the bottom.

Brian