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Dual alternators, idea..

well, not really sure how that would work out.. ya might be able to start with a motor plate for solid mounting, but eliminate the mounting aspect...

cee-4005_w.jpg


but i'm not even sure off the top of my head if it would actually facilitate mounting up the accessories.... might make it more difficult with different bracket configs.. not to mention pully alignment and radiator clearance.... :thinking:

anyone know what SB application would have had the most accessories? something late model and fancy maybe? :dunno:
 
Blue85 said:
It's very easy. Just wire them in parallel. Use a ring terminal to ring terminal cable between the two and then wire the two small connectors together as well.
Click to expand...

So all I would have to do is rig up some brackets in place of the old ac compressor, and run one big wire in between the main little brass studs on the back of the alternators, and then run wires from the plug on the second alternator and splice them into the wires that come from the back of the plug on the first alternator? Got any pics of how you wired yours up? I just may run a second alternator if I ever get ahold of some serious lights for my truck.
thanks,
James
 
Dude lights dont draw enough power to justify adding a second alternator, unless you are running a stupid ammount of them. 150 watts divided by 12 volts equals aboot 12.5 amps per pair of lights. Yes this could add up quickly but if you enough lights to burden your electrical system you really need to reconsider your priorities. 150 watts is generally the max that I have seen too, I'm sure some high $$ ones are higher but most arent.
 
There's a write-up over at off-road.com/chevy about dual alternators. It isn't very detailed, and kind of sucks, but it might give you an idea. And there's a link to this place http://www.ohiogen.com/ that specializes in dual alternator set ups.
 
afroman006 said:
Dude lights dont draw enough power to justify adding a second alternator
Click to expand...

no, it doesn't.



BUT, coolness does.


AND, other posts in this thread show that this is not the only reason he's considering it. :wink1:
 
If you are running a non serp set up chevy came with two places for alt, but you lose the ac comp. on a serp system I would pull the AIR pump and put it there
 
kgblazerfive said:
I would pull the AIR pump and put it there
Click to expand...

I have no air pump. I am actually considering just sticking with 1 alternator, since I may not need two for a while.. I should probably be on the lookout for a york instead.
thanks,
James
 
Not really sure what the exact differences are, but CUCV altenators had an "isolated ground" (remember reading that in the TM). Unfortunately I don't have a CUCV in the yard anymore :( so I can't go out and physically check. Don't know if this had more to do with the 12V/24V system (although both altenators where actually 12V) or just because there were two (alts). Did anybody find out more about the Powersmoke set ups?
 
Blue85 said:
It's very easy. Just wire them in parallel. Use a ring terminal to ring terminal cable between the two and then wire the two small connectors together as well.

It's harder to set up two seperate systems, but even then all you really need is an isolator or switch.


One note on the CUCV alternator brackets. I think those were 24V systems, so one of the alternators was probably isolated from chassis in order to run them in series. No big deal, though, you just need a ground wire to it or remove whatever was used to give the isolation.
Click to expand...
Are you still running the dual alts with one battery? Any new issues? I'm looking to do this to a plow truck and would rather not have to buy a second battery.
 
afroman006 said:
Here's how CUCVs have their second alt mounted if it helps. The one on the left is a stamped civilian truck single bracket and the one on the right is the cast CUCV second one.
Click to expand...

Not to mention the Ambulance CUCV versions with dual alternators PLUS air!


Walter
 
jimmy88 said:
Are you still running the dual alts with one battery? Any new issues? I'm looking to do this to a plow truck and would rather not have to buy a second battery.
Click to expand...
Yes, still running them. No new issues. As a bonus you can use 1 lifetime warranty to cover both alternators.

The only drawback I can see is that I don't get much belt wrap. It hasn't been a problem for me, but I don't have a winch yet. If I can ever find a triple water pump pulley with all three the same diameter, I will swap that on and run a separate belt for the second alternator (the A.I.R. pulley is smaller than the other two on the water pump).
 
I just read in one of the CK5forums about a guy converting an old GM alternator to a Welder. This way you can make weld repairs in the field. Buy a CS140 - 144 Amp alternator from a junk yard ( $65.00 ), Mount that where the AC compressor is, and convert your current alt to an emergency welder.
Make sure the water pump pully connects to an equal stress on the opposite side of the engine, or the water pump bearings could be over stressed.
 
From my experience with powerstrokes both batteries do not power the truck. One battery is for starting and initial key on duties and the other is for the rest during general operating and driving. Im guessing that the second alt runs the second batt. Just my guess.
 
appears to be some sort of flex drive like a dremel tool would have but larger/beefier.

Some of the setups mentioned here with all the different accessories would be very difficult to mount up. Crew cab currently has a York, Ac compressor, alt and power steering pump. There just isn't room for anything else. Course now that's a cadillac and the oil pump/filter assembly is right in the way. Chevy motor, doable but ya better have a plan.
 
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