[C320-list] 4 D Battery Replacement

[crashley at gte.net]

Stephen,

I did check the belt size before I ordered the 120A Balmar and it's a 1/2 
inch belt. If the loading proves to be excessive I believe I can can reduce 
the load by a setting on the external voltage regulator that came with the 
alternator.

Thanks for the info.

CRA
Rosebud #882


----- Original Message ----- 
From: "Stephen Cox" <scox at timmin.com>
To: <C320-List at Catalina320.com>
Sent: Saturday, April 19, 2008 4:57 PM
Subject: Re: [C320-list] 4 D Battery Replacement


> The Balmar Alternator Regulator Guide suggests you will struggle with a
> single belt pulley on that size alternator.  You would need to check its
> width at the very least.  Is it 1/2" or 3/8" and what is fitted on your
> engine now?
>
> Extract from Guide:
>
> When  replacing an alternator  in  the stock engine position,
> you're  really  facing  the  issue  of  physical  limitation  on
> the
> belt and side load on the water circulation pump. We don't
> drive more than a 75 amp high output Balmar marine alter-
> nator on a single 3/8" undedicated belt, or a 100 amp on a
> 7/16"-1/2"  undedicated  belt.  Even  though  the  numbers
> might not seem much higher than say a 55 amp stock auto-
> motive  type  alternator, most  people  see  a  huge  improve-
> ment in performance between the two. That is because the
> alternators are designed to perform two very different jobs:
> the stock alternator  is designed  for handling  light constant
> loads (such as lights, fans, radios, etc.) and the high output
> marine alternator is designed to charge banks of batteries.
> To move up to our 150 amp alternator, a dual dedicated belt
> is required.
>
>
> Stephen Cox
> Tegwen #1141
>
>> -----Original Message-----
>> From: c320-list-bounces at lists.catalina320.com
>> [mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of
>> crashley at gte.net
>> Sent: Sunday, 20 April 2008 3:04 AM
>> To: C320-List at Catalina320.com
>> Subject: Re: [C320-list] 4 D Battery Replacement
>>
>> Pete,
>>
>> The Balmar 120A 60 series alternator I got came with a single
>> belt pulley. I haven't installed it yet but it looks like it
>> should fit okay. It also looks there's an adjustment in the
>> external voltage regulator to reduce the output current if
>> the load is too great for the engine.
>>
>> Thanks,
>> CRA
>> Rosebud #882
>>
>
>