[PSUBS-MAILIST] engine drive

[Alec Smyth via Personal_Submersibles]

Sorry to be critical, but yes, from an historical perspective a gas engine
would be a big no-no as gas powered subs were death traps prior to the
adoption of diesel. I always say my subs are at their most dangerous in the
shop, not in the water. This could be a situation where the drained gas
engine is not dangerous underwater but is dangerous during surface transit.
And frankly storing the gas outboard sounds like a bit of a challenge in
itself.  I applaud original solutions, but this isn't one that sounds like
a good idea, at least to me.

Gamma seems to have pretty good range on batteries, and I recall you're
planning on the trailerable landing craft. Would the landing craft not
obviate the need for an onboard ICE?


Cheers,

Alec

On Sun, Aug 20, 2017 at 7:50 AM, hank pronk via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Hi All,
> My diesel engine did not work out in the end, and 6 hp I suspect is a bit
> skinny.   I do have a beautiful 15 hp 4 stroke Honda outboard that has been
> converted to run a hydraulic pump inboard.  I converted it many years ago
> to power my sternwheeler but ended up with an antique engine. The engine is
> stripped down to a bare engine with external water pump and internal oil
> cooler.  The problem is, it is a gas engine, and that is a big NO NO or is
> it?   If the fuel supply is outside the hull and the engine is run out of
> fuel before a dive, then there is no fuel at all inside the sub while it
> dives.  An engine compartment blower fan can constantly circulate air
> through a duct to the outside of the sub.  I know as a rule it is
> considered a bad idea but with careful   installation it could be a very
> nice drive system.  This would be much quieter and smoother than a diesel
> engine.  The Honda would be very easy to remove from the escape pod if I
> need to escape.  The Honda 4 stroke is as reliable as even a Yanmar diesel.
>   I was bragging to a Honda mechanic one time that the Honda starts with
> two pulls in the spring.  He said it must need a tune up LOL  it should
> start in one pull.
> Hank
>
> _______________________________________________
> Personal_Submersibles mailing list
> Personal_Submersibles at psubs.org
> http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.whoweb.com/pipermail/personal_submersibles/attachments/20170820/d27d7e09/attachment.html>