Search found 61 matches

by dennisail
Wed Sep 07, 2016 8:10 am
Forum: Electrical
Topic: lifepo batteries
Replies: 32
Views: 19907

Re: lifepo batteries

I agree the dangers as in risk to health/the boat due to explosion are less with a shorted cell. But the risk to the wallet are greater :lol: I think the higher charge voltage thing is not so much a risk, its just a longevity thing. I read one blog where someone followed the "guidelines" and charged...
by dennisail
Tue Sep 06, 2016 5:16 pm
Forum: Electrical
Topic: lifepo batteries
Replies: 32
Views: 19907

Re: lifepo batteries

Sounds like a simple and effective system. Do you have anything in place to protect the system if say one cell develops a short? How have you configured your cells? 14.4V Seems a little high for longevity. Have you played with measuring the capacity at slightly lower voltages? 14.4 is very close to ...
by dennisail
Mon Sep 05, 2016 7:07 am
Forum: Electrical
Topic: lifepo batteries
Replies: 32
Views: 19907

Re: lifepo batteries

Yeah I thought you could just set the float to a low enough setting, and it would effectively stop the charge until the bank is discharged slightly before it gets topped off again. Apparently its not good to float charge the bank all day long. Laptops and phones seem to work like this, when its full...
by dennisail
Sat Sep 03, 2016 8:21 pm
Forum: Electrical
Topic: lifepo batteries
Replies: 32
Views: 19907

Re: lifepo batteries

Nice to see you guys are getting into the lithium batteries. I take it you have read this? http://www.pbase.com/mainecruising/lifepo4_on_boats Its by far the most comprehensive lithium "how to" I have seen. The main thing I got out of it is that you better make sure you have the correct over and und...
by dennisail
Fri Sep 26, 2014 4:25 pm
Forum: Electrical
Topic: Cheap handy Ebay electrical items. A list.
Replies: 1
Views: 2563

Cheap handy Ebay electrical items. A list.

Here are a few items that are so cheap it makes the "marine" sellers look like thieves. Prices include postage. $8.50 for a 100A digital LED ammeter and voltmeter with shunt. http://www.ebay.com.au/itm/141388204851?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649 $1.50 for digital LED voltage disp...
by dennisail
Fri Sep 26, 2014 3:28 pm
Forum: Electrical
Topic: AC grounding plate
Replies: 3
Views: 3420

Re: AC grounding plate

I cant think of a better way to promote corrosion than connecting shore power to your boat then using a grounding plate. Use an isolation transformer, or run everything off the inverter and have the charger big enough to handle loads. That will work in most cases where air cons etc aren't being used...
by dennisail
Fri Sep 26, 2014 2:52 pm
Forum: Electrical
Topic: LED anchor lights.
Replies: 3
Views: 4097

Re: LED anchor lights.

I usually make my own for less than a couple of bucks by retrofitting LEDs into existing fixtures. But even Whitworths sells ISO LED nav nights now for $25. The tri colour unit for $100 is cheap enough to just buy for sure. I would add a diode in series with it as 14V max is a bit low incase you are...
by dennisail
Fri Sep 26, 2014 9:26 am
Forum: Anchorages or just Great Spots
Topic: Coongul creek, Fraser Island.
Replies: 10
Views: 7521

Re: Coongul creek, Fraser Island.

Did anyone mention mud crabs? We went up the creek in the dingy and they were everywhere. I wish I had my speer but all I had was the dingy anchor and managed to take one out for dinner by using it as a hammer :lol:
by dennisail
Thu Sep 25, 2014 5:56 pm
Forum: Steering and Autopilots
Topic: Hydraulic steering leaks?
Replies: 1
Views: 3108

Hydraulic steering leaks?

Hey guys. I have a hydrive steering system which seems to be leaking from just about everywhere including the pump. How do I best solve the leaks at all the hardline terminations? Does this require cutting the stainless pipes and starting all over? Also does anyone have a filter in their system? I w...
by dennisail
Thu Sep 25, 2014 5:51 pm
Forum: Steering and Autopilots
Topic: Rudder and Daggerboard Foils
Replies: 1
Views: 2662

Re: Rudder and Daggerboard Foils

Thanks. I might be giving my rudders a once over and adding winglets. Not so it can be a foiler lol, but so the rudders don't dig into the sand when I beach endangering the sail drives. I may as well try to get some sort of performance benefit while I am at it.