View Single Post
  #8   IP: 73.35.200.244
Old 08-21-2020, 10:21 PM
Boat Boat is offline
Senior Member
 
Join Date: Aug 2014
Location: Kirkland, WA
Posts: 172
Thanks: 1
Thanked 14 Times in 13 Posts
Quote:
Originally Posted by edwardc View Post
Screeching at startup, when the charging load is highest, is a pretty good sign of a worn belt. Replace it. Our 120A alternator puts out about 60A when starting with depleted batteries, which quickly tapers off to 30-40A. After 200-300 hrs of engine runtime, the belt will begin screeching at startup. A new belt cures it 100%. I always carry a spare.

Our big alt is only running at 50% of capacity (max), and even less normally, so it should run cooler and last longer.

Our external Balmar 612 regulator also has a "soft start" feature which ramps up the load slowly instead of slamming it on all at once, which helps the belt not squeal and last longer.
the belt is fairly new (May) however it is the 26 inch. even with the longer bracket i cant seem to get it as tight as i would like 1/2" play with my finger. I tried a 25" belt but seems like it will go with some coercion but didnt.
__________________
'69 Newport 30 MKI Hull #20
Reply With Quote