Directly driving 36v golf cart with 12v genny

Ideas, advice, tips, and tricks regarding the building and creation of mutant vehicles in Black Rock City
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Captain Goddammit
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Re: Directly driving 36v golf cart with 12v genny

Post by Captain Goddammit » Tue Mar 15, 2016 6:51 am

No, the 20-amp comment didn't confuse us. It showed that you're confused!
Real world playa altitude EU2000 output is a little over 10 amps, at a very tightly regulated 120VAC (not 110 VAC).
I don't know where you've gotten the idea that automotive battery chargers over 6 amps are at all uncommon.
Sears sells a nice one for $150 that does 2 amp trickle, 15 or 50 amp fast charge and a claimed 250 amp "starting" surge.
They are commonly available in a wide array of power levels.

You've got to remember that a 6-amp, almost uselessly-wimpy charger isn't always putting a full 6 amps into the battery bank, and that hooking up a few in parallel will reduce each one's charge rate.

Trickle charging isn't what you want for running an MV. You've got to maintain a charge rate that keeps up with your average consumption. If you try to trickle charge your MV you'll be parked an awful lot, waiting for it to charge. You've only got that one week out there, you want a rapid charge rate.

Knowing your technical info is good but you also need to put down the textbook, go to BRC and bust out the gear and see what really happens.

You're giving advise that will have an MV parked an awful lot rather than doing what it should be doing, running over darkwads and scaring babies.
GreyCoyote: "At this rate it wont be long before he is Admiral Fukkit."

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ygmir
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Re: Directly driving 36v golf cart with 12v genny

Post by ygmir » Tue Mar 15, 2016 7:16 am

Captain Goddammit wrote:No, the 20-amp comment didn't confuse us. It showed that you're confused!
Real world playa altitude EU2000 output is a little over 10 amps, at a very tightly regulated 120VAC (not 110 VAC).
I don't know where you've gotten the idea that automotive battery chargers over 6 amps are at all uncommon.
Sears sells a nice one for $150 that does 2 amp trickle, 15 or 50 amp fast charge and a claimed 250 amp "starting" surge.
They are commonly available in a wide array of power levels.

You've got to remember that a 6-amp, almost uselessly-wimpy charger isn't always putting a full 6 amps into the battery bank, and that hooking up a few in parallel will reduce each one's charge rate.

Trickle charging isn't what you want for running an MV. You've got to maintain a charge rate that keeps up with your average consumption. If you try to trickle charge your MV you'll be parked an awful lot, waiting for it to charge. You've only got that one week out there, you want a rapid charge rate.

Knowing your technical info is good but you also need to put down the textbook, go to BRC and bust out the gear and see what really happens.

You're giving advise that will have an MV parked an awful lot rather than doing what it should be doing, running over darkwads and scaring babies.

sticky note!!
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mudpuppy000
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Re: Directly driving 36v golf cart with 12v genny

Post by mudpuppy000 » Tue Mar 15, 2016 9:47 am

Hmmm kinda late, but why not 3 generators in series? 3x12=36v, 30 amps. I have no idea if you can hook up generators like that and not have them explode, but it works for batteries. Actually that's probably the way your batteries are hooked up in the golf cart to begin with.

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Captain Goddammit
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Re: Directly driving 36v golf cart with 12v genny

Post by Captain Goddammit » Sun May 01, 2016 9:16 am

Another BRC-specific logistic consideration for vehicles is lighting. Mutant Vehicles need to be "radically illuminated". Generally speaking, using LEDs, that translates to at least 20 amps worth at 12 volts. Probably more. Mine is a lot more. It's hard to sustain hundreds of watts of lighting draw on top of the motor draw without a pretty big battery bank and a lot of stuck-at-camp charging time. That makes gas power or at least an onboard gas generator a whole lot more attractive.
GreyCoyote: "At this rate it wont be long before he is Admiral Fukkit."

Autodoctortx
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Re: Directly driving 36v golf cart with 12v genny

Post by Autodoctortx » Wed May 11, 2016 6:57 am

Here is your solution look in eBay

It is a 36volt dc generator we used one last year at burning man it worked like a dream it puts our 70amps dc it is the scariest version of the generator you have. Also it was commissioned from Honda by a telecom company and never used they are selling for about 500 dollars new in the box

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