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Thread: Adding a blower

  1. #1
    Join Date
    Apr 2014

    Default Adding a blower

    I have a homemade 2x3 wood fired evaporator and I want to add a blower
    Do I mount it to the ash clean out door so it blows under the grate and will this cause the
    Hot ash to blow out the stack wildly

  2. #2
    Join Date
    Mar 2018
    Two Harbors, Minnesota


    I installed a blower on my small unit as well. As it did work, as long as there is a fire grate for it to blow under the wood, I found I needed a way to control the amount of air that gets pushed in there depending on how hot the fire is. One can use a potentiometer or a simple disk over the air intake of the blower to restrict the amount of air as needed. I pivoted the disk on a screw.
    2016- 32 taps, 3 1/2 gallons
    2017- 150 taps, 13 gallons after building an evaporator
    2018- goal is 240+ taps. 20+ gallons.
    2018 Reality- 235 taps, 5 gallons of syrup. Average 50 birch taps and 3 gallons of syrup.
    2019- 180 maple taps, 20 gallons of finished syrup.
    ~ 160 birch taps, 13 finished gallons of syrup.

    Latitude 47.278150


  3. #3
    Join Date
    Feb 2017
    eau claire


    i had a 50 cfm bathroom exhaust fan blowing up under my grating on a barrel stove and it worked super well. i never emptied ash. I never seen any in the area i cooked. my pan was roughly 2x3. make sure you raise up the lower back section and insulate/firebrick. it gets very hot inside.
    2016 7 taps= 1-2 gallons of syrup
    2017 135 taps on bags/buckets =17 gallons syrup on block arch
    2018 75 taps on bags/buckets in new locations =50 gallons syrup (2 month season) on insulated barrel stove with auf and hobby r.o.
    2019 less taps on different ground for 1 month season. 20 gallons. Added 4x40 RO membrane and never finished 2x4 cooker.

    Creator and Mod of Wisconsin Maple Syrup Producers on FB

  4. #4
    Join Date
    Jan 2011
    Southern Ohio


    I personally prefer Air over fire. I have a modified half pint arch (extended) with a Smokey Lake drop flue pan. I use an old leaf blower with a variable speed control in the shack and have it outside the shack for noise reduction. I have it plumbed into a 1 1/2 inch manifold to the front of the arch then I ran1/2 inch black iron into the firebox on each side, capped the ends and drilled small holes in the black iron to disperse the air over the fire. I can turn it up, down or off with the controller. It will make the arch rumble. I had to go to triple wall pipe though because my stack temps went up a lot. If I'm attentive to my firing and using good wood I can make the sap almost jump out of the pan. Oh I bypassed the switch on the blower so it's full power when on and rely on the controller for speed, I don't know what CFM I'm running, but I'd guess over 100. My first blower died on me mid season a couple years ago and I bought the leaf blower at a second hand shop for $15.00 as an emergency and three years later I'm still running it. I was going to get a regenerative blower, but hey why spend the money. I think I'll hit the junk shops and get me a spare leaf blower ready for when this one bites the dust. At $15.00 I can buy a bunch of them for the price of a commercial blower. I have watched yard sales and second hand store, even auctions and you can buy the blowers dirt cheap just about any time. I did see a bounce house blower in a yard sale once and wish I'd bought it for $10.00, but passed then went back and it was gone. So check shops, yard sales and auctions and you can get off pretty cheap. It takes a little modifying but you can hook the leaf blowers up to PVC pretty easy then convert to iron. I use fernco fittings like this https://www.lowes.com/pd/Fernco-2-in...ngs/1000075331
    100 -110 taps
    Smokey Lakes Full pint Hybrid pan
    Modified half pint arch
    Air over fire
    All 3/16 tubing
    Southern Ohio

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