Ladyhawk reacted to Island Time in Solar question, existing setup...
KM, lets get it right!
AMPs are current flow. Amp Hours are capacity. There is a huge difference in a panel that can give 4-5 amps, and one that can give 4-5 amp hours per 24 hours.....
And, your 0.2a draw as above is 4.8 amp hours per day actual draw. There are losses and inefficiencies in charging, you'd really want 5.5-6 amp hours per day out of the panel to keep up with this. Allowing for crap weather, but still getting this charge, I'd use a panel of around 30w to be certain. That's 30w/13.6v = 2.2 amps x 3 hours useful charge in winter = 6.6 Ah. Thats guessing available sunlight, and using 13.6v as the float voltage for the batts...
Ladyhawk reacted to vesper1 in 2 alts better than 1
The beauty of two alternators is the redundancy offered, this is a good enough reason on it own. I've had a 120 amp alternator charging house batteries plus original Yanmar alt charging dedicated engine battery for almost 20 years and have never had a problem starting the engine. It's a simple system and 100 % redundancy you won't regret it.
Ladyhawk reacted to lateral in 2 alts better than 1
From what I understand:
Current is the only indicator of charge acceptance/ SOC whilst charging.
Bulk = increasing voltage, constant current, Absorb= constant voltage Vset decreasing current. Bulk is usually over quickly.
Time at bulk to Vset only indicates how flat your batteries were.
240Ahr batteries at 0.01C indicator means a tail current of 2.4A for 100%.( Probably
How long is it going to take to get your acceptance to that rate?
Otherwise you are doing a partial soc charging.
Which LA batteries don't like.
Correct me if I'm wrong.
Ladyhawk got a reaction from Sudden5869 in The Ocean Race
Cool! hope its an IMOCA not a VO65!
Connecting to Alicante from Auckland, New Zealand, Bianca Cook, who raced on board Turn the Tide on Plastic in the 2017-18 event, announced she would be spearheading a New Zealand flagged team.
© Ainhoa Sanchez/The Ocean Race
Tony Rae (Trae), a veteran of six editions of the race, twice as a winner, as well as seven America’s Cup teams, is on board to manage the campaign.
“After the race finished in The Hague, I was ready to go again and since then I’ve been working with Trae to put together a team for the next Ocean Race,” Cook said.
“We have a deep pool of New Zealand sailors to draw from as we put together the crew – I can’t mention any names just yet – but watch this space.”
Link to the whole article:
Ladyhawk reacted to Dr Dave in Offshore Medical Course
Thank you Razz, Fish and others for your support.
Steve Pope as to your comments - ".. it is surely a commercial venture."
Actually -you are quite wrong.
I do this to help NZ yachties and do NOT get paid to do so. I do it because I enjoy it, because I was asked to do it and I want to give something back to yachting.
It also enables all of the volunteers (there are many of us - Sally, Bek, Jenny, Angus and I) to donate money to a yachting charity.
All of the profits are donated to charity.
I was paid to rewrite the YNZ Medical requirements - I donated this money to Youth Sailing.
Profits from the first "Dr Dave course" - were donated to Cyclone relief in Fiji
All of the other course profits were donated to Disabled sailing.
Firstly we outfitted a boat for a disabled race officer to help her get in and out of the boat.
Last years profits are going to buy Defibrillators for patrol boats and the RAYC for cardiac arrests.
We are also putting money towards building a yacht to teach disabled sailors how to sail
I suggest prior to making ill-informed comments - you find out the facts
Ladyhawk reacted to Fish in Manson Supreme 25
I can second this. Like I said earlier, I get everyone to sit down in the cockpit before backing down now. If I've only got chain out, it really is like backing into a brick wall. 25 m of chain, then 100 m rode, so for short lunch stops etc in 8m or less of water (i.e. most of the time) the boat snatches up on the excel sharp enough to knock the kids of their feet if they are just standing.
I specifically got the excel so I can sleep onboard with the bids onboard, without that nagging feeling of 'did I set the anchor properly, did it bite in, will I drag out of the bay at 2 am if the wind backs?... kind of stuff that stops you having a good deep sleep on the boat.
Oh, and on the pricing, I've never understood how CRA price the Excel. All I can say is go in and ask them, in person. Not phone. Not interweb. They might be able to explain their pricing better than I could.