[PSUBS-MAILIST] engine drive

Tue Aug 22 17:00:15 EDT 2017

Hi All,Well I had an idea that I could put a small diesel engine in my escape pod and it would be a quick easy modification.  Turns out a diesel that will fit is not readily available, so I looked at my  gas engine.  That fits but is full of hazards that will take to much time to address.  So I give up!  Now onto the new idea.  I thought about putting a 36V generator in my inflatable since I am towing it anyways.  I can just tie the boat to the side of Gamma and run a power line over to the sub to power a drive motor.  That will work but I have improved on that idea.  The boat will have a Johnson 9.5 hp outboard on it, so why not machine a hub onto the outboard motor flywheel and drive a 36V alternator( generator)  directly, then  the same motor can do two jobs.  It has to be direct drive to the alternator because the crank bearing in the motor can not take a side load for a pulley and belt.  This could work!Hank.  

On Tuesday, August 22, 2017, 9:49:18 AM MDT, Juergen Guerrero Kommritz via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

Hello HankEthanol do not explode like gasoline. It will burn but do not cause a burst explosion like gasoline. It is safer and if there is an accident and it spill over the enviroment, you get some drunk fishes but nothing serious, after a hangover they will be fine.  
As far as I know in some states in the US is possible also to destill your own ethanol for fuel, of course you must get the permit. 
Is a ideaBest wishesJuergen

    hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> schrieb am 14:31 Montag, 21.August 2017:

 Juergen,That is interesting, what makes Ethanol safer?  does it have a lower flash point?  No worries with the passengers drinking the fuel, I will post a sign that says" if you drink the fuel you have to swim home"  ;-)Hank

On Monday, August 21, 2017, 9:24:42 AM MDT, Juergen Guerrero Kommritz via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

Hi Hank,An idea is to convert the motor to ethanol, it looses 10% power, but ethanol is saver than gasoline. The greatest problem is to avoid that the passengers drink the fuel :-).Best wishesJuergen

    hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> schrieb am 6:52 Sonntag, 20.August 2017:

 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_______________________________________________
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