Hey guys just wondering about putting my crank battery towards the front of my boat, it will be about 3 to 3.5 metres away from motor!! 420 explorer with 50etec! Any help will be appreciated!!
Hey guys just wondering about putting my crank battery towards the front of my boat, it will be about 3 to 3.5 metres away from motor!! 420 explorer with 50etec! Any help will be appreciated!!
So what type of help are you after????
Maturity is not when we start speaking BIG things,it is when we start understanding small things
I think he wants to know if the battery will still provide full cranking amps after it reaches the motor some 3/3.5m away... Right?
Sorry guys was in a hurry, as bowds13 said, will I loose to much cranking amps that far? Extra fuses etc? Is it to far away?
apart from the obvious length you would have to increase the cable size too to allow for voltage drop, but it is do-able
I recently did a cable upgrade on my estuary boat.
80hp Yamaha fourstroke.
7m cable length to battery under the nose of a 14ft boat.
Used 4b&s cable. (Was a pissy 10mm2- dropped to 5v when cranking)
Very minimal voltage drop now.
Do it!
Damo's dodgy boat building factory.
Damo's dodgy boat repairs.
1993 bermuda by Haines 530f - completed resto.
1976 cruisecraft rogue 14 - estuary weapon.
1984 vickers easyrider 156 - future project.
And another internet myth is launched & perpetuated...
http://www.ausfish.com.au/vforum/sho...art-F80-Yamaha
Voltage drop is proportional to cable resistance which is proportional to the cable cross sectional area.
Doubling the cable CSA should have halved the voltage drop yet you went from a Voltage drop of some 7+Volts to minimal....see the myth?Used 4b&s cable. (Was a pissy 10mm2- dropped to 5v when cranking)
Very minimal voltage drop now.
You inadvertently fixed the high resistance connection or cable fault by changing the cable, nothing more, nothing less.
I don't want to sound mean but that's how these myths get started.
I'd use 2 B&S (2 awg) myself.
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