Just wondering on how the new tubing is working with only a 1-2% slope? My slope is man made, start high and end low, at best I have about 2% slope and am wondering if the new 3/16th would work.
3/16" with minimal slope
Just wondering on how the new tubing is working with only a 1-2% slope? My slope is man made, start high and end low, at best I have about 2% slope and am wondering if the new 3/16th would work.
Probably not a good idea. The only study I know of looking at 3/16" tubing on flat land (done in Canada) showed that there was a build up of backpressure and reduced sap yield.Originally Posted by AndrewsofBow
Dr. Tim Perkins
UVM Proctor Maple Research Ctr
http://www.uvm.edu/~pmrc
https://mapleresearch.org
Timothy.Perkins@uvm.edu
What about using 3/16 tubing for drop lines into buckets?
Shouldn't be any problem doing that.
Dr. Tim Perkins
UVM Proctor Maple Research Ctr
http://www.uvm.edu/~pmrc
https://mapleresearch.org
Timothy.Perkins@uvm.edu
I know it shouldn't be a problem but is there a way to get some vacuum out of it?? Tap higher in the tree or something? My sugar bush is too spread out with almost all reds to put a tubing system in.
For every ft of head (height), you'll (theoretically) gain 0.88" Hg of vacuum, however in this case it is somewhat of a false-gain, since you'll be losing that same amount of head pressure that exists lower in the tree by tapping higher up. Thus no, there isn't any real advantage to using 3/16" over 5/16" tubing in this way. As always, you just can't break the laws of physics.
Dr. Tim Perkins
UVM Proctor Maple Research Ctr
http://www.uvm.edu/~pmrc
https://mapleresearch.org
Timothy.Perkins@uvm.edu
Well it would be nice to bend them once in a while.
Does tapping lower on the tree measurably increase pressure at the tap?
John Allin
14x18 Hemlock Timber Frame Sugar House 2009
Leader 2x6 w/Patriot Raised Flue Pan 2009
Leader Steam Hood 2014 - Clear Filter Press 2015
Leader Revolution Pan and SS Pre-Heater 2016
CDL Hobby RO & Air Tech L25 Hi Vac Pump 2019
06' Gator HPX to collect wood & sap
14' Ski-Doo Tundra for winter work in the woods
Great Family 3 grown kids+spouses and 7 grand kids who like the woods
7th Gen Born in Canada - Raised in Chardon Ohio - Maple Capital of the World..<grin>.
We did 3 runs of 3/16 this year. We put gauges on each of them. One has 7 taps on it and the drop from the last tap to the tank is only about 5 feet. But we are getting 13 inches of vacuum. And the one with the most drop has about 15 ft and we are getting 22 inches. Explain that!
Paul, where are you getting 13 inches of vacuum? At the last tap before the tank, or somewhere above that on the line?
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