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  1. Right, but the bottleneck is usually not the...

    Right, but the bottleneck is usually not the wire, it's the battery resistance.






    To quote from the bottom of that page:

    "Finally choose whichever wire is the largest from rule 3 and...
  2. Bone stock or not, that's a helluva special...

    Bone stock or not, that's a helluva special system. It's a computer controlled voltage regulator with extra sensing inputs. A bit like a factory installed Sterling external multi-stage regulator.
    ...
  3. Hrmmm... A) I probably should have been more...

    Hrmmm...

    A) I probably should have been more specific, but I got in a hurry. What I was referring to was: He was using the alternator's voltage as a basis for programming his solar charge...
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    Totally agree. Here's one of HandyBob's...

    Totally agree.




    Here's one of HandyBob's pet peeves that you left out:

    -- ANY shade on a solar panel WILL cut the output...even a little on one corner can cut it by AS MUCH AS 1/3 OR...
  5. The primary purpose of any solar charge...

    The primary purpose of any solar charge controller is to prevent overcharging the battery. You'd have to worry about it if you connected the solar panel directly to the battery with no controller,...
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    Good for them. There's definitely a market, since...

    Good for them. There's definitely a market, since these days any old worn-out beatdown POS camper on Craig's List is officially "vintage".


    (I remember a CL "Best Of" post that listed rules for...
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    For A/C you could run a trucker's mini-split...

    For A/C you could run a trucker's mini-split sleeper unit. Since anti-idling smog laws, there are many different units available in different sizes. Most use a Danfoss variable speed DC compressor...
  8. I've been beating the crap out of an AutoZone...

    I've been beating the crap out of an AutoZone deep cycle (open cell flooded) for...I dunno...year and half or so. Still doing okay. 115ah Duralast and I think I paid 75 for it. Tried to look it up on...
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    Depends on the fan. I've got a couple of the El...

    Depends on the fan. I've got a couple of the El Cheapo $15 oscillating fans from the local auto parts chain store. One is a two speed that can really put out some air on high, the other is slower and...
  10. Thread: Project Casita #2

    by dwh
    Replies
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    Try and get it right this time wouldja? Jeez. :D...

    Try and get it right this time wouldja? Jeez. :D

    Did you at least make a profit on the first one? Then you wouldn't be crazy to do it again.

    Otherwise...yes, you've lost your mind. And I...
  11. Lemme add a bit of real world to this thread. Not...

    Lemme add a bit of real world to this thread. Not long ago, I had to replace the alternator belt on my truck. It was stretched. I knew it was bad because when there was a heavy load on the...
  12. Thread: Das Bus

    by dwh
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    Well...uh...you kinda have to do that. That's...

    Well...uh...you kinda have to do that. That's like...well...uh...the *definition* of parallel.

    :D
  13. Wait till dark. :D But it's not really an...

    Wait till dark. :D

    But it's not really an issue. Most solar charge controllers say to connect the battery first since that's where they get the power to run the brain in the charge controller....
  14. Multiple different charging systems don't affect...

    Multiple different charging systems don't affect each other. They're too dumb. Each just supplies current until the voltage reaches a certain point and then shuts off. They don't compete, their...
  15. I've jumped my Ford 460 several times through my...

    I've jumped my Ford 460 several times through my truck's split-charge relay which uses a decent quality 80a rated solenoid. Most starters are rated at like 250a max draw but actually only draw around...
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    I don't think non-combustible matters. I think...

    I don't think non-combustible matters. I think non-CONDUCTIVE is a whole lot more important. You aren't going to have a fire in the first place if the stuff doesn't short out. I don't worry about a...
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    (You call THAT pedantic? Nah. Now THIS is...

    (You call THAT pedantic? Nah. Now THIS is pedantic!)


    http://www.filmflams.com/wp-content/uploads/2013/11/CrocodileDundee.jpg
  18. Thread: Das Bus

    by dwh
    Replies
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    Ya. Same like this, but with 3 series strings...

    Ya. Same like this, but with 3 series strings instead of 2:



    http://www.rialtainfo.com/vw/vw_images/engine_battery_001.gif
  19. Thread: Das Bus

    by dwh
    Replies
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    It'd be 3 series strings of 2 x 6v in series, and...

    It'd be 3 series strings of 2 x 6v in series, and then the three strings paralleled for 12v.
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    The CTEK regulates current and voltage in the...

    The CTEK regulates current and voltage in the bulk stage, and voltage in the absorb and float stages. All proper multi-stage chargers do that - bulk stage in constant current mode, then absorb and...
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    Just noticed you said your rig's constant voltage...

    Just noticed you said your rig's constant voltage power supply (voltage regulated alternator) puts out 13.3v.

    So, if the CTEK is putting out 20a @ 14.4v, that'd be 20a x 14.4v = 288w. On the input...
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    Voltage drop doesn't much matter when CHARGING...

    Voltage drop doesn't much matter when CHARGING batteries, though it definitely matters when supplying loads from batteries, such as an inverter.

    Why does it not matter when charging? Because...
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    http://www.expeditionportal.com/forum/threads/7750...

    http://www.expeditionportal.com/forum/threads/77503-How-to-make-a-cheap-isolated-dual-battery-setup-for-50

    With a deep cycle battery and hook the extra loads (except the winch and driving lights)...
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    99% of everything works just fine on Modified...

    99% of everything works just fine on Modified Square Wave. The things which don't...usually burn up. Quite a few "battery powered tool" chargers will toast on MSW.

    The ultimate small inverter...
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    Cab-top crawl-through? Never seen that before.

    Cab-top crawl-through? Never seen that before.
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