Converting to Balmar 100 Amp Alternator on Freedom 38

Posted by gjirak (gjirak@…>)

I made this post on both Freedom sites

I would like to convert to AGMs on my Freedom 38 and would like to
upgrade to a BALMAR 100 AMP Alternator and a multistage regulator.
The boat has a 3GM30FYeu engine at 27hp. I measured the belt and it
appears to be 1/2 inch which surprised me since I thought it would be
3/8 inch which would allow only a 70 AMP alternator.

I plan on 3 AGMs for house, one starting battery and a Gel battery for
my windlass connected by a Echocharger which allows for adjustment in
voltage. Is 100 Amps to much for this engine? Any other recommendations?

George Jirak
Deja Vu
Freedom 38
Pasadena, Md

Posted by Louis Spitz (aronella@…>)

I haqve a '94 F35, and a Yanmar 3gm30f. We went from a 55 amp Hitatchi alternator to a 110 amp Balmar, added a third house battery, echo charger, multi-step voltage regulator. So far, it was the right thing to do. Also added a Xantrax monitor- wonderful!

Lou Spitz “Ripple Effect”

----- Original Message -----
From: gjirak
To: freedomyachts2003@yahoogroups.com
Sent: Monday, November 12, 2007 9:30 AM
Subject: [freedomyachts2003] Converting to Balmar 100 Amp Alternator on Freedom 38


I made this post on both Freedom sitesI would like to convert to AGMs on my Freedom 38 and would like toupgrade to a BALMAR 100 AMP Alternator and a multistage regulator.The boat has a 3GM30FYeu engine at 27hp. I measured the belt and itappears to be 1/2 inch which surprised me since I thought it would be3/8 inch which would allow only a 70 AMP alternator.I plan on 3 AGMs for house, one starting battery and a Gel battery formy windlass connected by a Echocharger which allows for adjustment involtage. Is 100 Amps to much for this engine? Any other recommendations?George JirakDeja VuFreedom 38Pasadena, Md


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