Alternator where AC used to be

BigB82789 said:
Does it keep up with your electrical equipment or do you have to throw a charge on the batteries often?
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Even with the factory alternator, my puller gets a trickle charge every week when I unload it and pull it in the garage.
 
There are a lot of guys that run with no alternator and just trickle charge during the week. You would be OK running a little smaller alternator and charge it during the week just for piece of mind.

You figure a puller is only run for short periods of time anyway.. that doesn't leave much charge time even with a factory alternator.

from phone
 
Mine does fine. We put a tester on it and it does charge but I also throw a charger on it before pulls just bc its a quick and easy way to be sure.
 
gearhart73 said:
Mine does fine. We put a tester on it and it does charge but I also throw a charger on it before pulls just bc its a quick and easy way to be sure.
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I know some single wire alternators don't charge much at idle. What voltage do you see at idle?

from phone
 
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Mine doesn't at dead idle but at 900rpm it's over 12v. 14 iirc. So I just rest my foot on the pedal whille im warming it up at it charges good then.
 
gearhart73 said:
Mine doesn't at dead idle but at 900rpm it's over 12v. 14 iirc. So I just rest my foot on the pedal whille im warming it up at it charges good then.
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Probably a catch 22 for ya the larger pulley doesn't help I am guessing.

I would be curious if the high RPM is really a concern. Of course we are spinning them at 2 times the rated speed. I have the factory one on mine and it has seen 5000 rpm numerous times, with no issues.
 
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Yeah the pulley is probably why I have to give it some r's to charge. Mine see's 6000 rpm so we thought it wasn't a bad idea to try to keep the speed down. It probably wouldn't matter but that's what we decided to do.
 
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Think of alternators on gas jobs turning way more than these engines. I don't think the rpms would bother.

from phone
 
ClamDigger4 said:
Think of alternators on gas jobs turning way more than these engines. I don't think the rpms would bother.

from phone
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On gas engines the alternator is usually not overdriven quite as much as on diesel stuff
 
jupton said:
On gas engines the alternator is usually not overdriven quite as much as on diesel stuff
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I am mainly referring to a 1 wire gas alternator on a diesel and mounting it down by the frame. They spin 6-7k on a gas job. So I can't see them being over spun on a diesel.

from phone
 
ClamDigger4 said:
I am mainly referring to a 1 wire gas alternator on a diesel and mounting it down by the frame. They spin 6-7k on a gas job. So I can't see them being over spun on a diesel.

from phone
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The crank pulley on a cummins is quite a bit larger than a typical gas engine which would spin the alternator faster at the same engine rpm. I don't think the extra rpm would bother the alternator, it's more a case of minimizing hp loss.
 
anyone have any part numbers looking at jegs they have one for $89 that has a serp pulley but i dont have the motor back to see if it will fit down there
 
scott 06 said:
anyone have any part numbers looking at jegs they have one for $89 that has a serp pulley but i dont have the motor back to see if it will fit down there
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Some of those are almost the same size as factory Dodge alternators. They have some mini ones but they are pricey

from phone
 
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