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Old 27-10-2011, 16:11   #1
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Second Alternator - Balmar ? Leece Neville ? or . . . ?

Hi,

I am replacing my 2nd alternator (with the engine). I have a battery bank of 700Ah, wet cell. How would you size the alternator? Which brand would you use?

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Geza
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Old 27-10-2011, 16:18   #2
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Re: 2nd alternator - Balmar? Leece Neville? or what

What size engine and do you have a serpentine belt?

Electromaxx.

Mark
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Old 27-10-2011, 16:40   #3
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Re: Second Alternator - Balmar ? Leece Neville ? or . . . ?

The engine will be a 55hp Volvo or Yanmar. The alternator will have its own pulley(s) on the engine.
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Old 27-10-2011, 16:55   #4
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Re: Second Alternator - Balmar ? Leece Neville ? or . . . ?

Quote:
Originally Posted by rotorman View Post
Hi,

I am replacing my 2nd alternator (with the engine). I have a battery bank of 700Ah, wet cell. How would you size the alternator? Which brand would you use?

Regards
Geza
The normal rule of thumb for the max acceptance rate for flooded batteries is 25% of the bank size = .25*700 = 175 amps. around 150 amps would be sensible if you can drive it with two belts (need a two belt pulley on the engine). If you can only use one belt then you should not go above about 90 amps.

Here is the SSCA equipment survey ratings of alternators. They are sorted best to worst (lower=1=best, higher=3=worst). The sample size is 832 cruisers rating their alternators.

Hamilton Ferris 1.4
Proline 1.4
Leece Neville 1.5
Lestec 1.6
Ample Power 1.8
Balmar 1.8
Hehr Powerline 1.9
Amtech 2
Mastervolt 2
Silverbullet 2
Bosch 2.1
Yanmar 2.1
Hitachi 2.2
Motorola 2.2
Volvo 2.2
Other 2.2
Delco 2.3
Prestolite 2.3
Powermax 2.4
Cummings 2.7
Lucas 2.7
Ingrams 3
Mando 3
Reece Neville 3
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Old 27-10-2011, 17:05   #5
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Re: Second Alternator - Balmar ? Leece Neville ? or . . . ?

I put a 120 amp om my Yanmar 55 hp. Single pulley. Electromax about one hour to install, with external regulator works like a champ. John at Elexctromax works with you through the process.
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Old 27-10-2011, 19:10   #6
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Re: Second Alternator - Balmar ? Leece Neville ? or . . . ?

Is this John in NZ?
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Old 27-10-2011, 21:07   #7
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Re: Second Alternator - Balmar ? Leece Neville ? or . . . ?

Balmar paints a rebranded alternator white/blue and puts their name on it. If you look at various pdf files you will see many are identical to the Leece Neville. I don't believe they actually make any alternators.

If you want big amps then you should also consider the AltMount.com - Welcome - Mount a second alternator to your Yanmar marine engine brackets for your Yanmar. They have a 10 rib serpentine belt and powerfully built. It is a far better solution than a V-belt driven alternator.
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Old 28-10-2011, 05:11   #8
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Re: Second Alternator - Balmar ? Leece Neville ? or . . . ?

Yes, I believe so.
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Old 02-11-2011, 21:31   #9
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Re: Second Alternator - Balmar ? Leece Neville ? or . . . ?

Do you have any contact details for John, please?
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Old 03-11-2011, 09:13   #10
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Re: Second Alternator - Balmar ? Leece Neville ? or . . . ?

just call electromax he will probably answer
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Old 03-11-2011, 09:53   #11
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Re: Second Alternator - Balmar ? Leece Neville ? or . . . ?

What is the point of the second alternator, if I may ask?

Do you have one PTO (two alts run on one big belt in a triangular configuration) or dual?

I have a new Beta 60 with dual PTOs precisely because I wanted two 75-90 amp alts to charge my 850-1000 Ah banks. For reasons of heat, cost, wear on the crankshaft, "thieving" of horsepower, and redundancy, it's easier to contemplate a pair of sub-100 amp alternators than one big 'un. Also, I have extensive solar and wind charge sources, so the alts will only be, unusually, the third line of charge sources as I intend to only run the engine for motive power. So the alts will be set up, unless I'm at anchor for five cloudy, windless days, to provide a "finishing off" charge, rather than to recharge a deeply discharged bank.

So it's a case of working backwards from the application to determine a right size, I think. The size of your bank is irrelevant until you tell me your daily draw-down and whether you are going to stay on the hook all the time, etc.

As for make, I favour Leece-Neville because they are popular in Canadian 18 wheeler trucks!

I think Balmar is a little overrated, or rather, I think I can do what they do with external regulation more effectively than their price premium can justify. Just my opinion now; it's subject to further persuasion.
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Old 06-11-2011, 05:45   #12
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Re: Second Alternator - Balmar ? Leece Neville ? or . . . ?

John @ electromax one eight six six nine foru five eight eight zero one
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Old 07-11-2011, 04:41   #13
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Re: Second Alternator - Balmar ? Leece Neville ? or . . . ?

Electromaax has some great belt kits and nifty small alts. Talked to them at the IBEX show, nice guys.
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Old 07-11-2011, 04:43   #14
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Re: Second Alternator - Balmar ? Leece Neville ? or . . . ?

I note that the list above doesn't show the new American Power Systems high-output alts that I've used on several applications.
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