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Marshy

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Posts posted by Marshy

    Solar Panel Fun - Is it dead or is it alive...

    in TechTalk

    Posted

    Well Island Time you were right - its dead...

     

    I put a load on the panel (lightbulb drawing 1amp) and it lit the light but the voltage dropped to 9 volts straight away.
    on the other panel if i did the same the voltage stayed around 17 volts.

     

    So panel dead, now to find a new one the same size so its fits in same place! 

    Solar Panel Fun - Is it dead or is it alive...

    in TechTalk

    Posted

    So one for the electrickery boffins out there.

    My boat has two x 100W Polycrystal solar panels fitted side by side on the flybridge. (Specs are below)

    It has a 30Amp PWM charge controller.

     

    If i connect one panel i get 5amps charging, if i disconnect that panel and plug in the second panel i get no current charging... So one assumes the panel is dead

     

    This is where it gets funky...

    If i test the Open Circuit voltage (Voc) i get 21.8v on both panels. 

    If i test the Short Circuit Current (Isc) i get 5.89A .

     

    So it seems as if the panel is performing to spec but when connected to the charge controller on its own it doesnt seem to put any current to the controller.
    The controller is fine as the other panel works when connected exactly the same... (note the panels are side by side, same sunlight and even the same wiring to the controller when i swap them so no differences there.

     

    Any ideas? - Is it normal for them to die yet show both correct Voc and Isc? 

     

     

    Panel specs:

    Maximum Power:100W (Pmax) 
    Maximum Power Voltage: 18 V (Vm) 
    Maximum Power Current:5.55 A (Im) 
    Open Circuit Voltage:22.5V (Voc) 
    Short Circuit Current:5.99A (Isc) 

    How to dock yer boat

    in MarineTalk

    Posted

    Remembering that alot of the Yachties that went to the dark side, now use their said "Wake Makers" or Stink Boats, to start wind bludger races and lay courses too! - Not to mention doing it whilst cooling the beer and carting the BBQ around.

     

    Oh that reminds me - the Single Handed weekend at BBYC is coming up - come see what i mean ;-)

    • Upvote 1

    Lost kite

    in MarineTalk

    Posted

    Ah thinking now that would be where the black chilli bag floating by Bean Rock came from? Someone joked it had beer in it and we should have grabbed it - turns out it was probably true!

    Engine Operating Temperature

    in TechTalk

    Posted

    Anyone know of a cheapish flow detector locally ?

    My water maker overflows the tank when it's full over the side so I'd like to put a sensor on the overflow tube (12mm I think) so I can wire it to a small led light rather than have to go up on the foredeck to check

    First world problem I know, but I'm just worried about filling the ocean with fresh water ;-d

    Looked for a while for the launch - and ended up buying an Aqualarm off the website. I found a few places that did Reed Switches that i looked at using but not easily...

    Recovering a halyard that has pulled onto mast

    in TechTalk

    Posted

    If you have an easy way to drop the rig - (Think i saw elsewhere you do?) - you can get a long piece of 3 or 4mm rigging wire, and push it from the sheave down the rig when its horizontal - its stiff enough to track along inside the rig.

     

    Tape a loop of string to it so you have something to fish out at the halyard slot...

    Weber BBQ overboard

    in MarineTalk

    Posted

    Yeah had to put new cockpit speakers in the 88 after my wife dropped her car keys in the marina, easiest quickest magnet i could think of was a cockpit speaker - they are water resistant not water proof fyi - made them old pretty quick haha

    The Famous BJ Tyres Single Handed series

    in ShortTalk

    Posted

    We have a roll call so far as:

     

    Open

    Dirty Deeds

    Catabatic

    Stealth Mission

    Voom

    Sledge

    Space Station

    Heartlight

    Wild Oats

    Ocean Express

    Lightfoot

    Crocodile

    That Girl

    Glandestine Jet

    Dissedent

    Manawa

    Zap

     

    Restricted

    Protocol

    Bandicoot

    9 (Elliott 9)

    Xebec

    Cordite

    Touch of Glass

    Lanikai

    Yasawa

     

    Anyone else coming to play?

    The Famous BJ Tyres Single Handed series

    in ShortTalk

    Posted

    At least 3 so far - have got entries from Sledge, Voom and Dirty Deeds. But always welcome more :-)

    Have heard back from 18 boats so far confirming they are coming, and there are about another 12 that have entered last year that im awaiting confirmation back from - so should be its usual massive event!!

    Dragging/Anchor unset etiquette

    in MarineTalk

    Posted

    Interesting topic.

    Recently anchored in Mansion house at Kawau there was a yacht that when the wind swung was incredibly close to the rocks between mansion house and two house bay, when the breeze kicked in it either dragged or straightened out its chain and was seriously lucky not to be on the rocks. - No owners to be seen, boats in the bay kicking off horns etc to draw some attention from owners.

     

    A RIB from a Riviera went over and tried to tow it to safety, but wasnt having much luck and lacked the towing power/ weight to pull it. Luckily they held it off long enough for owners to arrive and sort it before tide went any lower...

    By far the easiest option would have been to motor it to safety, but that opens a can of worms and liability.. but made for an interesting discussion!

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