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Big Oak split dry time

Post in 'The Wood Shed' started by SolarAndWood, Oct 10, 2011.

  1. bogydave

    bogydave Minister of Fire

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    The best part is when you see & feel the difference between really dry seasoned wood VS what I used to think was dry wood.
    Much more heat output & the stove get up to temp allot faster. Other benefits, too. :)

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  2. scotvl

    scotvl Burning Hunk

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    I was more concerend about what would start and stop the motor when you operate the splitter. Unless the motor runs constanly?
  3. Dune

    Dune Minister of Fire

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    If you simply replace your gas engine with an electric motor, then yes, it runs constantly.
  4. SolarAndWood

    SolarAndWood Minister of Fire

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    That is what I did. Didn't seem like a big deal to me as the torque is proportional to the current. i.e. always moving at 3400 RPM but not generating much torque or consuming much power unless the cylinder is moving. I have an outlet adjacent to the subpanel in the garage and just use the circuit breaker as the switch for the splitter.
  5. SolarAndWood

    SolarAndWood Minister of Fire

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    So true. I had a miserable experience until I had dry wood. Really dry wood is that much better again. Really dry big splits in that big firebox is where I want to be when the temps are low and the wind is crankin.
  6. scotvl

    scotvl Burning Hunk

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    Thanks, this should be a pretty simple project then.
  7. SolarAndWood

    SolarAndWood Minister of Fire

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    Dropped another 3 pounds in the last month or so. Still appear to be on a pretty steep part of the drying curve. Started around 60 pounds on Labor Day.

    Attached Files:

  8. woodchip

    woodchip Minister of Fire

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    That's about 12 pounds of sap dried off in about 14 weeks......

    Has it shrunk much yet ?
  9. SolarAndWood

    SolarAndWood Minister of Fire

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    Doesn't seem to have shrunk much but I didn't mark the exact locations I measured on the split to begin with. Still seems right about a cubic foot.
  10. cptoneleg

    cptoneleg Minister of Fire

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    Thats some serious drying for a big old split
  11. ProjectX

    ProjectX Member

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    I don't know how true or accurate it is but its my understanding that a cord of oak contains over 5 55gal drums of water.

    Just for food for thought i guess.

    X
  12. cptoneleg

    cptoneleg Minister of Fire

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    Some of the BTU charts show weight of green and dry and Oak has a difference of about 3000 lbs. So that could be true
  13. SolarAndWood

    SolarAndWood Minister of Fire

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    Sounds about right. Sweep says this 1 cu ft split should be under 40 when it is dry. That is 20 lbs plus and I didn't weigh the split the first time until a couple weeks after it was dropped and bucked.
  14. SolarAndWood

    SolarAndWood Minister of Fire

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    Slowing down but still moving along pretty good.

    9/19 58 lbs
    11/21 51 lbs
    12/19 48.2 lbs
    1/21 47 lbs

    If we assume it is supposed to be about 40 pounds when dry:

    first 60 days 39% of moisture on day 1
    60-90 days 26% of moisture on day 60
    90-120 days 15% of moisture on day 90

    Percentages are obviously highly dependent on the actual dry weight and gets much more sensitive to that as the water weight goes down, but give some idea of what the drying curve looks like. From what I have seen so far, the assertion that big splits rot before they dry doesn't look correct. At the rate it is drying, it also seems to support the idea that the majority of drying is done out the ends. Lastly, I no longer buy the idea that wood doesn't dry in the winter. Maybe not as fast but there is still a good reason to get stuff split as early as possible even when cut late Fall.

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  15. Brogan007

    Brogan007 Member

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    This is such an excellent thread ......so informative. Never imagined there was so much water in the wood.
    Thank you. Will be picking out a large fresh chunk of hardwood & doing the same here.
    Thanks. Love this forum.
  16. Kenster

    Kenster Minister of Fire

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    And I guess that depends on what percentage moisture content you consider "dry." But 3000 lbs would be 375 gallons of water!
    And people think that burning green wood is a good idea??
  17. Hogwildz

    Hogwildz Minister of Fire

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    I have big square splits of Oak, and they dried nice. Having all open sides makes a big difference. I will say I stacked mine loosely away from the rest of the stacks.
  18. oldspark

    oldspark Guest

    You know MM's and scales can not be trusted. :cheese:
  19. woodchip

    woodchip Minister of Fire

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    But if you are using the same scales, you will get a fairly reliable idea of the reduction in weight as inaccuracies would tend to be constant.

    MM readings would only be surface readings unless the split was split every time the reading was taken...........

    I suppose for accuracy, a couple of dozen huge splits could be used so one could be split for each moisture test.

    Which would use up a whole load of nice big splits....... ;-)
  20. SolarAndWood

    SolarAndWood Minister of Fire

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    Who says wood doesn't dry in the winter? That is another 2+ pounds in the last month.

    9/19 58 lbs
    11/21 51 lbs
    12/19 48.2 lbs
    1/21 47 lbs
    2/23 44.8 lbs

    Attached Files:

  21. oldspark

    oldspark Guest

    "Lastly, I no longer buy the idea that wood doesn’t dry in the winter. Maybe not as fast but there is still a good reason to get stuff split as early as possible even when cut late Fall."
    Yep I changed my opinion on that also, its well worth stacking and splitting in the fall or early winter, if you have a mild winter all the better.
  22. ecocavalier02

    ecocavalier02 Minister of Fire

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    im thinkin my wood probably is drying more now than in the summer. everyday in 40's breezy and dry out. summer equals humidity for the most part here.
  23. Flatbedford

    Flatbedford Minister of Fire

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    I couldn't imagine why wood wouldn't be drying all winter. The relative humidity is usually lower in the winter than the summer. That is a lot of water that has come out of that split. Nearly two gallons by weight now right?
  24. SolarAndWood

    SolarAndWood Minister of Fire

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    Pretty close. Probably more if I had weighed it initially sooner. It's kind of interesting that something like 3/4 of the water is out of that big a split in 5 months.

    Your thought about winter RH seems right too. Might not be that warm but it is dry and the wind is blowing.
  25. Flatbedford

    Flatbedford Minister of Fire

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    Does it stink any less with all that water out of it?

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