24 volt windlass on 12 volt boat? Anyone done this?

[Heckler]

The last windlass I looked at drew 170A.
Taking your arbitrary 2 x 10m and the cable you suggest, I make that 4V dropped.
But only while the copper stays cool, soon it will increase....

:encouragement:

 

[Heckler]

Another PBO electrical thread full of utter nonsense lol

:encouragement::encouragement::encouragement:

 

[moomba]

:encouragement::encouragement::encouragement:

ok ok you got me I confess I know shit and I work for the dark side I learnt everything as a Chief engineer in this dam bubble , so stick the force were the sun don't shine
if any one would like dark side info please PM me

 

[moomba]

I attach my last ship I worked on , no idea what went wrong I think it was a blown FUSE!!
Moving on to something a bit smaller good luck all and fair winds :encouragement:

 

[ghostlymoron]

Maybe but HD cable won't need replacing whereas batteries don't last forever.

The cost of cable is not trivial.
On a big boat, cable which is truly adequate might cost more than two batteries.
Charging 24V batteries from 12V is fairly mundane, at the current needed to keep a battery charged and replenish the use from a pick winch (and/or thruster) it's not expensive.
It's a process as complex or simple as buying a black box from a supplier you trust.
Blathering generalities is not helpful.
To counter what another poster said, 24V equipment is common as muck, lorries are full of it.
The proper thing to do is to fully cost the various schemes and weigh up the pros and cons.
The hidden cost might be the work involved in installing adequate cables which the boat isn't designed around.
I'd guess a 12V windlass with simple fat cables might be the cheapest and best solution, but if one wants a big powerful windlass to cope with a big anchor and lots of chain, maybe not.

 

[lw395]

Maybe but HD cable won't need replacing whereas batteries don't last forever.

Fair comment.
I suppose the cable might want replacing when SWMBO decides one needs a bow thruster.
Perhaps the ideal is to buy a yacht which has been designed with the windlass in mind, so the batteries are a sensible distance from it, and the cable routing isn't a nightmare?

 

[Tranona]

Fair comment.
I suppose the cable might want replacing when SWMBO decides one needs a bow thruster.
Perhaps the ideal is to buy a yacht which has been designed with the windlass in mind, so the batteries are a sensible distance from it, and the cable routing isn't a nightmare?

My windlass is still powered by the house bank even though the bow thruster has its own battery up front.

 

[lw395]

My windlass is still powered by the house bank even though the bow thruster has its own battery up front.

I wonder how that came to be seen as 'the thing to do'?
All 12V?
Any complex charging arrangements?

 

[Tranona]

I wonder how that came to be seen as 'the thing to do'?
All 12V?
Any complex charging arrangements?

Factory fit. Windlass is standard, thruster optional. Would guess easier to add using a separate battery, although all batteries are the same 95AH AGMs 1 start, 3 house, 1 thruster. Split charging from alternator I assume - never looked at it as it just works.

 

[pvb]

Factory fit. Windlass is standard, thruster optional. Would guess easier to add using a separate battery, although all batteries are the same 95AH AGMs 1 start, 3 house, 1 thruster. Split charging from alternator I assume - never looked at it as it just works.

My Bavaria is the same; I think it's to do with standardisation of the wiring loom.

 

[Leonidas]

Sir Douglas ! You will need a solenoid anyway , you will also need a two position heavy duty switch connected for series or parallel operation. But you have to remember to throw it to the correct position for charging at 12 v or running at 24 v. Easy enough with the addition of two LEDs green for 12, Red for 24V

 

[Lon nan Gruagach]

Sir Douglas ! You will need a solenoid anyway , you will also need a two position heavy duty switch connected for series or parallel operation. But you have to remember to throw it to the correct position for charging at 12 v or running at 24 v. Easy enough with the addition of two LEDs green for 12, Red for 24V

My (barking mad) plan was to use another solenoid for the 12V charge/24V use and have it activated by the same signals that operate the direction solenoid. Automatic, see, when you want to use it it becomes a 24V battery connected to the windlass, when you are not using it, its 12V connected to the charger... magic innit!

 

[Chris_Robb]

View attachment 72619

I attach my last ship I worked on , no idea what went wrong I think it was a blown FUSE!!
Moving on to something a bit smaller good luck all and fair winds :encouragement:

Oh God - I think SC is back in yet another body!