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Thread: Chimney Cap question

  1. #11
    Join Date
    Mar 2020
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    Springfield, MA
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    Came across this thread after my first boil challenges. Smoke? Oh there was smoke, and lots of back pressure.. Took apart the stack yesterday and the cap was chock-full of gunk, restricting flow. Took it off entirely and will rebuild the stack today sealing all the seams with furnace cement and changing from a 2' length out the back directly to the 45, then three feet pipe, the other 45 and keep the four foot upright with no cap. Hoping for the best. Ordered a new/longer setup yesterday where the upright will be 2, 4-foot sections with a different style cap. Think I'll try a boil without the new cap first but don't really have ladder long enough to get me up there so might just pull out the screen before installing. I have time to think on that one.
    2020 - 2 taps, 1/2 pint on a turkey fryer, About 3/4 pint syrup in two weeks - Proof of concept!
    2021 - 20 x 30 divided pan, custom Mason arch, 34 producing taps out of 50. 8 gallons for family and friends to judge and Dad hooked as well.

  2. #12
    Join Date
    Mar 2011
    Location
    Haverhill, Ma
    Posts
    818

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    Why do you have a cap? It's my understanding a cap will impede the draft
    2019 - New 12X12 boiling pavilion
    2018 - New Mason 2X3 Hobby XL and homemade RO
    2017 - 49 taps on gravity, 6 on buckets.
    2016 - 19 taps on new 3/16 tubing, 24 on buckets
    2015 - 51 taps, 26 buckets
    2014 - 50 taps, 14 buckets, steel railroad toolbox converted into arch, new 2X3 continuous flow Phaneuf from Homestead Maple
    2013 - 33 taps, 12 buckets, steel railroad toolbox converted into arch, steam table pans
    2012 - 26 taps, 10 buckets, steel railroad toolbox converted into arch, steam table pans

  3. #13
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    Jan 2014
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    Pomfret in North East CT
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    39

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    I tried adding a screen at the top of my stack once as a spark arrestor. It sooted up quickly and stopped the boil...
    never again.
    2020 ~New Smokey Lake Dauntless w/flat pan
    Home made coil pre heater
    40 taps on drop lines
    7 on hanging buckets

  4. #14
    Join Date
    Mar 2020
    Location
    Springfield, MA
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    60

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    Quote Originally Posted by woodguyrob View Post
    I tried adding a screen at the top of my stack once as a spark arrestor. It sooted up quickly and stopped the boil...
    never again.
    That was my thought process on the cap - a spark arrestor. Had a couple campfires get out of hand as a kid and have since been extra cautious as a result. But yeah it sooted up and while I did have a "boil" it wasn't rolling. Hoping the removal makes the difference.
    2020 - 2 taps, 1/2 pint on a turkey fryer, About 3/4 pint syrup in two weeks - Proof of concept!
    2021 - 20 x 30 divided pan, custom Mason arch, 34 producing taps out of 50. 8 gallons for family and friends to judge and Dad hooked as well.

  5. #15
    Join Date
    Jan 2020
    Location
    Connecticut
    Posts
    97

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    Quote Originally Posted by Aaron Stack View Post
    Think I'll try a boil without the new cap first but don't really have ladder long enough to get me up there so might just pull out the screen before installing. I have time to think on that one.
    My plan was to fashion a cap that I can put on and take off with a really long pole. Haven’t gotten to it yet, but that was the idea. Primarily to keep the rain out and keep it from rusting.
    2017 - 20ish taps on buckets, boiling outside in two baking pans
    2018 - 70+ taps, 14-buckets, 50+ on tubing, homemade arch from oil tank in my barn, 17 gal syrup
    2019 - same set up, 20 gal syrup
    2020 - less taps, short season, but RO kit was fantastic! 6 gal syrup and a maple cat!
    2021 - planning on expanding to 50 taps on buckets and 40 taps on tubing - goal = 10 gal of syrup

  6. #16
    Join Date
    Mar 2011
    Location
    Haverhill, Ma
    Posts
    818

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    I throw an old galvy bucket over the top of the chimney between boils.

    I suspect you're going to get rust anyways unless the stack is stainless. Remember, Rust Never Sleeps.
    2019 - New 12X12 boiling pavilion
    2018 - New Mason 2X3 Hobby XL and homemade RO
    2017 - 49 taps on gravity, 6 on buckets.
    2016 - 19 taps on new 3/16 tubing, 24 on buckets
    2015 - 51 taps, 26 buckets
    2014 - 50 taps, 14 buckets, steel railroad toolbox converted into arch, new 2X3 continuous flow Phaneuf from Homestead Maple
    2013 - 33 taps, 12 buckets, steel railroad toolbox converted into arch, steam table pans
    2012 - 26 taps, 10 buckets, steel railroad toolbox converted into arch, steam table pans

  7. #17
    Join Date
    Mar 2020
    Location
    Springfield, MA
    Posts
    60

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    New chimney is dripping in via FedEx one piece at a time and have sap to boil (though it might be a block of ice in the morning). Had a small hour and a half boil Thursday without the cap and with the blower. Much better results. Hit my ten GPH goal and probably exceeded that so boiling-wise I was pretty happy. Temp got only as high as 450 and the exit run was cherry red with flames out the top and eventually split at the seam (it's one of those snap connection pieces from Depot). McGiever'd three hose clamps to close that seam for now. The new one is 24 gauge solid-piece single wall stainless so expecting better results once it's in place and reconfigured.

    No syrup yet, but the steam smells right and the boiling temp got to 2 degrees over boiling so almost there!
    2020 - 2 taps, 1/2 pint on a turkey fryer, About 3/4 pint syrup in two weeks - Proof of concept!
    2021 - 20 x 30 divided pan, custom Mason arch, 34 producing taps out of 50. 8 gallons for family and friends to judge and Dad hooked as well.

  8. #18
    Join Date
    Mar 2020
    Location
    Springfield, MA
    Posts
    60

    Default

    What a difference taking off the cap (and using the fan). Boiled off around 60 gallons in 4 hours yesterday and got my first gallon before I ran out of sap in the tote. Looks to be Amber Rich in color using the tester.

    IMG_0684.jpg
    2020 - 2 taps, 1/2 pint on a turkey fryer, About 3/4 pint syrup in two weeks - Proof of concept!
    2021 - 20 x 30 divided pan, custom Mason arch, 34 producing taps out of 50. 8 gallons for family and friends to judge and Dad hooked as well.

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