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Thread: Natural vacuum pressure

  1. #11
    Join Date
    Jan 2006
    Oneida NY


    Quote Originally Posted by BSD View Post
    the newest set i put out this season i put 33 on 2 lines. and i've got a third line which i want to put only 25 on and see if there is a difference. i suspect it comes down to total linear ft and tree spacing. my theory is that if there are still lots of air-bubbles in the lines then there is room for more taps. my 33 tap runs are nearly solid streams when they hit the tank.

    My older woods i have 23-27 tap averages on those lines. and they have a good mix of bubbles/solid.
    Your theory is wrong. The bubbles (as long as you have no leaks) are gas that comes out of the tree. That is how a maple tree protects it's cells when it freezes, as the water expands the gas (carbon dioxide) contracts thus protecting the tree from damage.
    Dave Klish about 1320 taps in '15, down to about 700 in '16, up to 850 for 2018?
    2012 Mahindra 36 HP 4x4/ loader/cab/heat/AC:-)
    added a gooseneck equipment trailer and F350 to tow it to haul more sap
    3x8 raised flue evaporator
    250 GPH converted to electric, RO by Ray Gingerich
    6.32 KW solar system, 1.48KW is battery backed up, all net metered
    website: www.cnymaple.com

  2. #12
    Join Date
    Mar 2010
    Oakville, CT


    Air bubbles are normal especially when it gets colder. My two lines that are tucked back in the woods will have lots of bubbles until it really warms up. Yesterday two lines were solid no bubbles at all and the other two were half and half. Walked them both and found no leaks just to be sure. Never hurts to go for a walk and check the lines when in doubt.
    2' x 3' backyard evaporator with homemade steam hood
    34 gallons produced in 2017
    100 taps (90 on 3/16" tubing)
    Homemade RO added in 2012

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