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Trippi's Hummer the Final Chapter (Eye Candy on page 36 & 52)


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How do you damage a deep cycle battery by undercharging it? arent they supposed to be drained and recharged? LOL. Sorry if Im a noob

Thats what I'm thinking lol. How the fuck do you damage a battery by charging it over it's resting voltage? 15.9 or 16.8, regardless, it's still higher than the 14.4ish volts its going to float at...

On 1/4/2013 at 9:31 PM, HatersGonnaHate said:

Wow. 184 posts and I think you're a fucking asshole.

 

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pacesetter headers cal" post="2658589" timestamp="1386610240"]

How do you damage a deep cycle battery by undercharging it? arent they supposed to be drained and recharged? LOL. Sorry if Im a noob

Thats what I'm thinking lol. How the fuck do you damage a battery by charging it over it's resting voltage? 15.9 or 16.8, regardless, it's still higher than the 14.4ish volts its going to float at...ya what about the toyotas and Honda's that only charge at 13.4ish so they can prolong battery life

My setup,

Digital Designs M80

3 Re audio 10's ported tuned to 36 hz

Kenwood x-696

SHCA 0 gauge

Polk audio coax running off hu

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I thought sulfation happens if batteries are chronically under charged?

Someone correct me if I'm wrong.

Either way, with trippi dropping that coin and david putting in all that work to fit those batteries, seems like it would be a little frustrating to not get the full potential.

i shook this one kids hand and it just folded in mine. long story short i fucked his girlfriendso.. yeah..

You want this to happen to you? Give decent handshakes people.

I was gifted with an innate ability to distribute wholesale ass beatings in a timely and orderly fashion.
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im really getting sick and tired of all this bullshit... time is a ticking..

=@

:ninja:

Ninja, you'll done have a whole nother car walled with 4 team subs by the time all the bullshit gets taken and berger actually gets his hands back on this... ;)

On 1/4/2013 at 9:31 PM, HatersGonnaHate said:

Wow. 184 posts and I think you're a fucking asshole.

 

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I'd be more concerned about just belt stretch/breakage than actual pull on the engine, it's not like he's powering these with a little 4 cylinder.

At startup, it's going to take a couple 2-3 seconds for the field current to get the alts up to charge at 15.8V from first fire. That is also not going to be at a full 100% draw on the alts unless the batteries are completely depleted.

Now just to do some out loud thinking/typing:

In electrical power, 1HP = 746W

So since P = I*V, and these are 300A alts (IIRC?)

We can say 300A * 15.8V = 4740W

4740W * 12alts = 56,880W

56,880 / 746 = 76.247

So the alts will in a sense be stealing roughly 76HP from the engine to run at full draw.

Gotta remember, when the alts aren't turned on the resistance they provide isn't ungodly, I know I could turn mine just fine.

And alts are around 50% efficient

75.247/.5 = 150.494

Pedal to the metal demos anyone?

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  • 3 weeks later...

I'd be more concerned about just belt stretch/breakage than actual pull on the engine, it's not like he's powering these with a little 4 cylinder.

At startup, it's going to take a couple 2-3 seconds for the field current to get the alts up to charge at 15.8V from first fire. That is also not going to be at a full 100% draw on the alts unless the batteries are completely depleted.

Now just to do some out loud thinking/typing:

In electrical power, 1HP = 746W

So since P = I*V, and these are 300A alts (IIRC?)

We can say 300A * 15.8V = 4740W

4740W * 12alts = 56,880W

56,880 / 746 = 76.247

So the alts will in a sense be stealing roughly 76HP from the engine to run at full draw.

Gotta remember, when the alts aren't turned on the resistance they provide isn't ungodly, I know I could turn mine just fine.

Funny...I was just thinking about doing this math when I scrolled down to your post :D

The thought just hit me....damn with 12 Alts, that must require a lot of HP to run at full tilt.

Considering the Alts aren't 100% efficient either, they probably draw a bit more then that as well.

I wonder what a Hummer engine (6.0 liter I believe) does at idle?

Suppose those Alts would stall the engine if you hit the system at idle........... :trippy:

I'll just leave this here.

1465216_10151969089243349_109847518_n.jp

Also, the 76 amps of draw calculation is off because alternators aren't 100% efficient. It would be closer to 150 HP to turn them, which also does not include any other engine driven devices like water pump, power steering, emissions, etc.

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