How many amps do you actually get from the alternator, and how big is your
battery bank?  I have a 100 Amp alternator, but it hardly ever does more than 84
Amps into a 425 AH bank.
"Doug Dotson"  wrote in message
...
 All I can cite is the fact that I have run a 160 amp alternator
 on a single belt for about 4 years. No slip, no squeel, and
 full output when needed. No problems with bearings and
 still on the original belt, although I have a couple of spare
 belts due to the heavier stress expected. Very happy so
 far. I would use a dual belt unit if my space would allow it.
 Doug
 s/v Callista
 "Wayne.B"  wrote in message
 news
  On Wed, 23 Jun 2004 08:50:10 -0400, "Doug Dotson"
   wrote:
 
  You can go up to a 160 amp alternator without having to
  resort to a large frame dual belt model.
  
  ========================================
 
  Doug, can you cite some references on that?  I've never heard of
  anyone recommending 100+ amps without dual belts.  I used to run a 120
  amp Balmar on one of my old sailboats with a single belt.  Frankly it
  left a lot to be desired even at 50 to 60 amps - lots of squealing and
  chewed up belts.  It would never get even remotely close to 100 amps,
  even for short periods.  The belt slip was just too much for it.