Very cool Don. You are getting similar results to my Ericson 27/SolidNav conversion, 20amps - 4 knots, 110amps - 5.8 knots. What kind of prop are you using? A big fat one or a "sailor" (skinny blade) type?
--- In electricboats@
>
> Took my Ericson 27 out yesterday to test my Mars ME0709 motor from Scott
> McMillan of Electric Yacht. Was very pleased with the performance of the
> motor and controller. Ended up making two half hour tests. The first
> test consisted of going into current (San Diego Bay) and at 26 amps it
> was showing 6.5 hrs on the monitor and 3.8 and 4.4 mph on two Garmin GPS
> units. At 30 amps it registered 5.3 hrs and 4.1 and 4.7 for speed.
>
>
> It was early morning so wind conditions were not a factor. The wind
> usually is calm in the mornings and picks up in the afternoon for good
> sailing conditions. A three blade 12 x 12 prop had replaced the original
> 10 x 10 two blade. We noticed the increased dripping of the water from
> the stuffing box and went back into the slip for repairs.
>
> Took two hours to replace the teflon flax in stuffing nut and off we went
> again. In order to replace the packing in the stuffing nut we had to
> disconnect the coupler from the motor. When putting things back together
> we adjusted the alignment of the motor shaft with the prop shaft. It
> should be noted here that the two motor brackets positioned on each side
> of the motor sit on top of a hard rubber mount to absorb vibration.
>
> Not sure what to say about the two different GPS reading from Garmin
> units, one being a Garmin 172 chartplotting monitor and the other being a
> hand held Garmin Rino 530HCx. The hand held was always giving us higher
> readings. But regardless, the highs and lows were acceptable.
>
> We did encounter a slippage in the prop shaft from a forward position in
> the coupler to a lower, gravity fed spot in the water. Thought perhaps a
> set screw in the coupler would eleviate this condition.
>
> On the second run we hit 6 and 6.9 speeds at 91 amps and then backed off.
> At the higher speed we were getting high vibrations from the motor. The
> power selector on the controller was not even in the highest position !
> A comfortable setting was at 45 amps, 3.2 hours, with a speed of 4.5 and
> 5.0, with no current or wind concerns.
>
> The motor never got hot, as others have reported. It was warm to the
> touch. An extra collar positioned between the coupler and the stuffing
> box did get warm and we suspected it was caused by not being secured to
> the shaft, or was rubbing against either the stainless steel coupler or
> the stuffing box. We looked for evidence of marks but did not detect
> any.
>
> By the end of six hours of tinkering and running tests the battery charge
> indicated 45 percent charge, on the four wet cell batteries, Interstate
> MR27 megatron 600 cca., marine deep cycle.
>
> Once again, very pleased with the motor's performance. Some more
> tinkering on the alignment and the motor mounts might eliminate the
> vibrations. So nice not to have the gas/diesel odors, or the concerns of
> an engine failure.
>
> Don Swanson
>
>
>
> 11 Oct 2009 05:34:03 +1100 Matthew Geier <matthew@...
> writes:
>
> MSN Stephen wrote:
> > Myles,
> >
> > I've got twin EU2000i generators that I've put together to run the air
> > conditioner on my sailboat at anchor. Works fine. I will say that I got
> > sucked in and bought the parallel kit for like $250. Once I got the
> > "parallel kit" and looked at it I discovered that it was a very simple
> setup
> > that can easily manufactured at home for much, much, MUCH less than
> $250. I
> > felt quite taken.
> >
> In a way what you paid for was an 'activation' of a latent feature of
> the gen set, not an actual box of tricks. This sort of thing is common
> in the IT sector - try explaining to the accountant that the thing you
> just paid $10k for was a 12 digit number the vendor sent by email.
> (Typing the 12 digit number into the software activates a feature that
> was there all a long, but disabled).
>
> The inverter electronics in the gen-set had to be designed from the
> start to allow synchronisation of parallel connected gen-sets to happen.
> Doing the synchronisation and load sharing external to the system would
> be a larger and more expensive box of tricks.
>
> Sooner or later this style of 'built in feature but disabled unless
> you pay more $$$' is going to appear in the motor controllers we use - I
> can see some one 'trying on' making regeneration an 'optional feature',
> that when you pay the extra $$$ , you get a code to type into the
> controler set-up software running on a PC that then instructs the little
> computer in the controler to activate the 'optional' feature, that was
> in fact embeded in there all a long, but turned off.
> Another IT industry trick is to charge you for 'feature enhancements'
> that are really fixes for flaws in the original system, but instead of
> calling them fixes, they call them enhancements and make you pay.
>
>
>
> ____________
> Wanna lose weight? Weight Loss Programs that work. Click here.
> http://thirdpartyof
>
> [Non-text portions of this message have been removed]
>
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