I have 2 27 series banks of Lifeline AGMs so 200 amps total. The numbers look too good for me to believe..I was expecting 3.0 kt. at 20 amp draw.. Next run I will have a gps on board and look at what point the tide is at and do a comparison
Richard
From: acsarfkram <acsarfkram@yahoo.com>
To: electricboats@yahoogroups.com
Sent: Sunday, June 12, 2011 10:30:38 PM
Subject: [Electric Boats] Re: first run
Hi Richard,
Your performance numbers look great for the Alberg 30. What's your battery setup?
Mark
Santa Cruz
--- In electricboats@yahoogroups.com, Richard Mair <fullkeel2000@...> wrote:
>
> Apart from going to the dock from the slings Into The Blue had its first unexpected run today..There are high easterly winds coming tonight and that is the only direction that causes a problem for us
> Had a 2.4 mile run up the Northwest arm (for those who know Halifax NS waters)
> Ran up the arm at 20-22 amp draw and was reading a speed of 3.5 knots at about 960 rpm..This is a new speed gauge so Ii do not know how accurate it is as no adjustments made yet. The EY gauge display said I could do this for about 8 hours at the start. Fluctuated between 7.8and 7.5 on the way up..Current was with us and a slight headwind..
> On the way back down I will take some more readings and compare to the GPS speed.The tide will probably be against us at that time..I did try one burst to 56 amps and 4.5 knots..
> After a couple hours the no load battery reading was back to 50.60 volts...So far figures a seem a bit better than anticipated..
> Seem pretty good for a 30 foot 9000 lb displacement fullkeel. We could actually talk during the trip
> Richard Alberg 30 Electric Yacht 100ibl system
>
Your performance numbers look great for the Alberg 30. What's your battery setup?
Mark
Santa Cruz
--- In electricboats@yahoogroups.com, Richard Mair <fullkeel2000@...> wrote:
>
> Apart from going to the dock from the slings Into The Blue had its first unexpected run today..There are high easterly winds coming tonight and that is the only direction that causes a problem for us
> Had a 2.4 mile run up the Northwest arm (for those who know Halifax NS waters)
> Ran up the arm at 20-22 amp draw and was reading a speed of 3.5 knots at about 960 rpm..This is a new speed gauge so Ii do not know how accurate it is as no adjustments made yet. The EY gauge display said I could do this for about 8 hours at the start. Fluctuated between 7.8and 7.5 on the way up..Current was with us and a slight headwind..
> On the way back down I will take some more readings and compare to the GPS speed.The tide will probably be against us at that time..I did try one burst to 56 amps and 4.5 knots..
> After a couple hours the no load battery reading was back to 50.60 volts...So far figures a seem a bit better than anticipated..
> Seem pretty good for a 30 foot 9000 lb displacement fullkeel. We could actually talk during the trip
> Richard Alberg 30 Electric Yacht 100ibl system
>
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