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spinergy
Novice
Dec 6, 2009, 5:49 PM
Post #1 of 21
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I'm thinking of adding a second alternator to my hilux, the original one wont supply the load I'm planning for it.
I can install a second one where the air con pump used to be however I'm wondering if the voltage regulators will fight each other and how to wire to avoid this.
Thanks
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Loren Champlain Sr
Veteran
/ Moderator
Dec 6, 2009, 5:59 PM
Post #2 of 21
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Re: Two alternators
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spinergy; I think you are asking for some real problems, here. How about adding a second battery with an isolator? Would be much easier, much cheaper, and accomplish the same thing.
Loren
SW Washington
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spinergy
Novice
Dec 6, 2009, 9:44 PM
Post #3 of 21
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Re: Two alternators
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I already have a solenoid driven isolator and two 660cca batteries.
I'm pulling a Kilowatt when I'm running all my extras, I'd rather have a way of powering the electrics that doesn't rely on the battery's.
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Loren Champlain Sr
Veteran
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Dec 7, 2009, 3:28 PM
Post #4 of 21
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Re: Two alternators
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spinergy; A kilowatt???? What are you doing, powering a hospital? LOL...You need more specific advise than I can give. Sorry. Hopefully, one of the other guys in the forum may have suggestions.
Loren
SW Washington
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Hammer Time
Ultimate Carjunky
/ Moderator
Dec 7, 2009, 5:02 PM
Post #5 of 21
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Re: Two alternators
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Your trying to light up a city with a flashlight.
That car just wasn't engineered for that kind of current flow and no matter what you do, your going to overload something.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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spinergy
Novice
Dec 7, 2009, 6:16 PM
Post #6 of 21
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Re: Two alternators
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Lol
Not quite a hospital, I have 10 x 100w 4x4 lights hanging off various parts of the truck. Seems excessive I know but necessary for what I do.
Plus there is the 2500w inverter but I never pull more than 700-800w off it.
I have replaced all the wiring with 4 gauge so the current flow shouldn't be an issue.
By my maths I need 70A at 14.4V to run the lights for any length of time which the alternator can supply at full load. however it's not good to run an alternator at full load for more than a few minutes so if I add a second I can pull 35A from each which they should be happy to sustain.
This will cost me just under 3Hp in power but I can live with this.
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Hammer Time
Ultimate Carjunky
/ Moderator
Dec 7, 2009, 6:22 PM
Post #7 of 21
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Re: Two alternators
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Why not just a portable generator recharging the system to use when the load is on?
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spinergy
Novice
Dec 7, 2009, 6:26 PM
Post #8 of 21
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Re: Two alternators
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Hard to run safely when off road, plus more gear to lug around taking up space and seems kinda pointless carrying a generator that runs only when there is another engine already running
(This post was edited by spinergy on Dec 7, 2009, 6:31 PM)
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Loren Champlain Sr
Veteran
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Dec 7, 2009, 7:05 PM
Post #9 of 21
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Re: Two alternators
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spinergy; We have several 'rebuilders' in the area. Have you checked into having an alternator 'built' for your purpose? As HT said, not sure the vehicle can handle all of that. But, I'm not an electrician.
Loren
SW Washington
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spinergy
Novice
Dec 7, 2009, 7:11 PM
Post #10 of 21
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Re: Two alternators
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Yea I was looking at doign that. I can get someone to wind a 200Amp one or buy a high output alternator and make a mount for it but I was hoping not to spend $1000nzd if I didnt have to. I know you can run two alternators togeather but you have to play some games with the regulators so stop them fighting each other. I was just wondering if you guys knew what I needed to do.
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Loren Champlain Sr
Veteran
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Dec 7, 2009, 7:31 PM
Post #11 of 21
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Re: Two alternators
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spinergy; Okay, bud, I got you figured out. You are running around the outback, at night, searching for Roos'. Right? LOL. We've got an old timer in the forum, but haven't seen him lately. Not sure if he's in NZ or with the convicts? LOL
You could try googling "DR.ELECTRICS" and see if you can find him? He's really sharp when it comes to auto electrics.
Loren
SW Washington
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Hammer Time
Ultimate Carjunky
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Dec 7, 2009, 7:52 PM
Post #12 of 21
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Re: Two alternators
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You can find him at Justanswer.com in the electrical category but that help isn't free.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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spinergy
Novice
Dec 8, 2009, 2:37 PM
Post #13 of 21
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Re: Two alternators
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Thanks guys, ill try to contact him
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Hammer Time
Ultimate Carjunky
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Dec 8, 2009, 4:15 PM
Post #14 of 21
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Re: Two alternators
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I know he's more of a household specialist. I don't know how much automotive experience he has if we're talking about the same person.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Sidom
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Dec 8, 2009, 6:14 PM
Post #15 of 21
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Re: Two alternators
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This guy
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Hammer Time
Ultimate Carjunky
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Dec 8, 2009, 6:16 PM
Post #16 of 21
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Re: Two alternators
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bad link Sidom
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Hammer Time
Ultimate Carjunky
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Dec 8, 2009, 6:20 PM
Post #18 of 21
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Re: Two alternators
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That one doesn't work for me either
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Sidom
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Dec 8, 2009, 6:21 PM
Post #19 of 21
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Re: Two alternators
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Try it again HT
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Hammer Time
Ultimate Carjunky
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Dec 8, 2009, 6:23 PM
Post #20 of 21
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Re: Two alternators
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Yep, that worked. I forgot about him. Different guy than I was thinking of.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Loren Champlain Sr
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Dec 8, 2009, 6:24 PM
Post #21 of 21
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Re: Two alternators
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http://www.motolec.com.au I'm guessing the "au" at the end means he's with the convicts in Australia? LOL
Loren
SW Washington
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