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Old Jan 8, 2011 | 09:00 AM
  #16  
86F150302's Avatar
86F150302
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From: Jacksonville FL
I have a small pulley on my 200 amp alt and have never had any problems. Alot of people run underdrive pulleys with a smaller alt pulley and haven't had any problems.

I don't see how you can overspin an alternator. But ive heard people ask before.
 
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Old Jan 8, 2011 | 09:41 PM
  #17  
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deeznuts822
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From: ohio
The heater motor probably draws more amps than the amplifier does. If i use higher heatersettings my gauge drops pretty far but the volt guage stays above 13.
 
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Old Jan 8, 2011 | 10:23 PM
  #18  
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Kingfisher77
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Originally Posted by 86F150302
I don't see how you can overspin an alternator. But ive heard people ask before.
Well most alternators have a max RPM rating. From what I understand, once you exceed those speeds, you start to have too much friction or vibration or wobbleon the shaft and or bearings... or at least I recall reading SOMETHING along those lines somewhere in my searches for information.

I could be wrong about that. I am far from an expert on any subject related to these trucks, well with the exception of how to fill your gas tank. If anyone needs any help with that I have plenty of experince, damn thirsty truck!
 
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Old Jan 8, 2011 | 10:25 PM
  #19  
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zxwut?
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From: Fort Worth
Have you got a chance to clean and inspect all the terminations in your electrical system yet?
 
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Old Jan 8, 2011 | 10:29 PM
  #20  
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No I haven't really gotten into it yet, figured I would fuss with all that when I get the new alternator.
 
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Old Jan 8, 2011 | 10:31 PM
  #21  
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CWPottenger
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I doubt you will run a truck engine into high enough rpm's to over spin sn alt...
 
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