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From: Harry James (no email)
Date: Sat Jan 22 2005 - 01:50:26 EST
Have had the same idea a couple of years ago. There have been some DC
generators advertised in the West coast Yachting mags. I contacted on
manufacturer. He used a small liquid cooled Kubota, the intent was for
it to run at low speeds for long periods of time. At low speeds the
noise output was negligible. He told me of one he had sold to a remote
cabin site in AK. The customer had it running continuously at about 800
RPM's into a battery bank for 5 years. Only stopped for oil changes. The
battery bank took care of the variations in load.
My thought was an aircooled sound proofed installation in a cockpit seat
using a Hatz diesel.
See http://www.northerntool.com/ and type in Hatz.
HJ
Joe - G4XRZ wrote:
>Hi Guys
>I have been pondering the benefits and practicality of a small DC
>generator set that doesn¡¦t cost a fortune and is home built..
>
>Specs as follows..
>Small diesel driven unit powering 100 amp alternator (Motor vehicle
>unit with regulator removed to gain access to field excitation from
>an external controller.
>Other uses ¡V as an emergency pump unit..
>
>The alternator would need apx 2HP to drive it at max output, a 3-4
>HP unit would do.
>I came across various diesel portable pumps using the same single
>cylinder air cooled diesel as yanmar sell, but at dirt cheap prices..
>With an adapter plate the alternator could be driven from the output
>shaft directly and the original belt drive of the alternator used to
>drive the original pump now offset or a pucka clutched pump (Engine
>driven bilge pump converted).. To power the pump you depower the
>alternator field and engage the clutch on the pump..
>The engine is electric start with a pull cord backup. Mounted
>internally in the boat / engine room.. a small impellor pump could
>inject water into the exhaust pipe linking it to the outside world ¡V
>at the connection between the existing manifold and the new pipe..
>nice n quiet.. (relatively ! ļ)
>
>It would also be possible to link the belt drive to a small
>watermaker at a later date.. it really just means a 3/8ths aluminium
>plate to attach any goodies with a shaft adapter on the alternator
>pulley.
>
>Seems like a good plan to me ?.. what do you think ?..
>Would involve a bit of tinkering and assembly.. but would provide a
>great power and backup system.
>Even with new prices on marine alternator and marine pump and
>complete engine assembly .. it would come to less that 2000 dollars
>US.., cheap to run and easy to service..
>
>Joe.
>Joe Hanley - UK
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>Yahoo! Groups Links
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