Understanding Stack Temperature
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Handcrafted in USA Handcrafted in USA 
Splitting your wood into smaller pieces goes a surprisingly long way to increase the efficiency of boiling. Here is an example from Jimmy B, at Smoky Lake. See that he split his wood about the size of his wrist. He also makes sure that his wood is well seasoned (dry) before using it in his evaporator.
Fellow Maple Producer, John Wanat, in Connecticut was evaporating 26 gallons per hour with seasoned wood (albeit damp from snow) at the beginning of the 2019 season. After cutting the wood into finer pieces, he increased evaporation to 46.5 gallons per hour. That’s a 179% increase! Woot woot!
Be sure to measure the depth of your particular firebox so that you know the proper length to cut your firewood. You should be able to close the door on your arch while boiling.
A Corsair Arch which is up to 6 feet long will have a firebox that is 20″ deep. So cutting the firewood 16″ – 18″ is best.
Dauntless Evaporators = approximately 20″ length firewood.
StarCat Evaporators = approximately 16″ length firewood.
1 comment
John Patriquin
Somehow I happened upon your Corsair 2’X4′ video 45 gallons in one hour timed. Great video I have 500 trees tapped on 3/16 lines average 22 inches of vacuum finish batches of 135 Canadian gallons. It takes me 24 hours or more ): My 4 pans are home made 20″X24″ SS flat bottom. Just form watching your video I will be splitting my wood finer and run the fire hotter. By next spring I will have a fan forced air draft. Will do my best to make it air tight and much better insulated.
While I would love to have a Corsair you are a long way from Nova Scotia.
My question is:
What is the approximate best average distance to have under the pans. From pan bottom to the fire bricks.