Re: Leece -Neville Alternator external regulator install

Oliver Henrichsen, SV Vela Nautica

Helli Dan,

Yes i got the 175A Alternator with double pully belt setup. 

At this time I limited the current to max 90 A. I could do more but I dont need to. I installed a 14.4 kWh Lithium batterie and most times when cruising I arrive with 90% charged batterie. The good side is also there is no more worn belts because the permanent load is lower now.

Do you have the Leece Neville document TSB-1139_8SC_WIRING_DIAGRAM?

Thats what I used to identify the connections. If you need to access the fiel contacts you may get the replacement back cap or just drill a wider hole through the original and use a hear resistant silicone wire and heat resistent gasket maker Silikone to access the field contact.

To access the stator I disconnected the original regulator and used the upper slot to pass the wires. I set the old regulator back as cap, disconnected. 

Oliver from Vela Nautica Amel54 #39 
Gran Canaria SPAIN 

On Fri, Nov 29, 2019, 13:18 Dan Carlson <carlsdan61@...> wrote:
Thanks for the information Oliver.

Do you have the Leece Neville 175A alternator on your boat?  If so the one picture that would be helpful is the actual wiring of the regulator behind the cap and the new connections into it.   And also if you have the LN175, it would be helpful to know the max current that you draw from it? 

Thanks and regards, Daniel Carlson on sv BeBe, SM#387, Shelter Bay, Panama

On Fri, Nov 29, 2019, 3:13 AM Oliver Henrichsen, SV Vela Nautica <oliver.henrichsen@... wrote:
Hello Dan,

I used the VSR sailors project regulator from Al Thomason. 
I am very satisfied with it. 
Since then I dont have wear off pullys and the regulator offers all parameters to customize beside all standard charge programs. 

I dont know if my wiring or fotos will help you? 

Oliver from Vela Nautica Amel54 #39 
Gran Canaria SPAIN 

On Thu, Nov 28, 2019, 13:43 Dan Carlson <carlsdan61@...> wrote:
Does anyone know what the safe continuous output for the LN175 would be? Or any information on the out put curve specific to this alternator.  I don't recall seeing it. Just the 175 amp rating. 

On Thu, Nov 28, 2019, 4:18 AM Alan Leslie <s.v.elyse@... wrote:
Yes Bob,
Traditional alternators can be a problem.
Remember though that on our boats there is a 1:2 ratio between engine rpm and alternator rpm so when the engine is doing 1000rpm the alternator is doing 2000.
This is where alternators like Delstar and Idlepro Extreme come into their own. These are 220/250amp alternators that can deliver 80-90% of rated output @ 2000 alternator rpm.
The standard LN175 can't do that and if you increase the rpm to produce more amps it will only do it for a while before everything turns to custard. 
We have big battery banks that can have very high charge acceptance rates with AGM,  firefly or lithium batteries,  so you need to think about these things very carefully in designing and operating a system that will achieve what you want safely.
Elyse SM 437 

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