I'm at the very beginning stages of a refit
, and I'm thinking about building myself a "machine", using readily available parts
with the following features and connecting it to the basic framework of the hull
Something like a small 5-9HP diesel
twin. Salt water
cooled with a heat exchanger
to heat the hot water
tank. and probably driving a serpentine belt. I already have a chang-fa air cooled motor
, but it's likely only 1.5-2 hp and not really suitable.
First up on the belt would be a 110-130 amp externally regulated alternator
. I'd like to home-build a system like 'premier power' so that I can simply switch the output from 12v charging
+ 110vdc to welding. I'd like to wire up some plugs on deck
to be able to stick, mig and tig weld. But being honest: I can make an alternator
welder or an alternator but I have no idea how to do both.
The seawater input would go to a strainer, and then a pre-filter, and then a 12v pump of 5-7 GPH.
That pump would go to a 'T' to feed a simple salt water deck
washdown fitting washdown JABSCO Stainless-Steel Washdown Quick Connects at West Marine
& a shower
. The other side of the T would be to pre-feed water
to a high pressure pump.
The HP pump would be on an electric clutch
, the output would go to a Y valve, one side into a watermaker
, the other to piping above the anchor
to pressure wash the anchor
as it comes up, and maybe a simple port to have pressure washing
Also on an electric clutch
would be a pulley driven Air Compressor
. Now, in dream land: this is a scuba compressor
, that is connected to the foredeck, on the foredeck, I have 2-4 scuba tanks
horizontally secured, and the dinghy
would rest on top of them. The compressor would be able to supply 10+ CFm of pristine air, so I could go from the tanks
to an pressure system integrated to the boat with connections fore and aft, where I could connect tools like a grinder, blaster and a scaler, or launch the dinghy
and use the tanks to actually dive.
In "not dream land", probably a bendix vehicular tool compressor. to a simple air tank.
Ok, so, my questions.
I have NO IDEA how much horsepower this would take, nor how to calculate it.
I would like any input as to likely inexpensive sources for parts
. I am leaning towards a kubota powerplant from a semi E.C.U. as the engine
, but I would really like some input as to relatively cheaply widely available engine
sources, that are easy to marinize with off-the-shelf components if at all possible.
I could of course do this all off my Yanmar
75 too, but my preference would be to build a smaller, independant system.
I've been totally unable to find a breathable air compressor with high cfm, let alone one at a resonable price
Is this thing doable under 5k? or am I totally in lala land? any cool sources of info or sources for candidates for individual parts
for the various systems as well as any 'things I haven't thought of" type stuff would be greatly appreciated.