jomoco
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Everything posted by jomoco
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IME it's the guys n gals with pristine n perfect looking saws that are the rank amateurs. All my saws have been worked hard n show it! Kinda like me! Jomoco
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Well Matt, because Telewski's conclusions have been confirmed by so many other PhD horticulturists. https://puyallup.wsu.edu/wp-content/uploads/sites/403/2015/03/staking.pdf Cabling, bracing or guying a tree absent genuine structural faults, will over a period of years, weaken them in comparison to trees left in a natural state. Jomoco
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I'm providing this link to a Purdue University report on the history and science of thigmomorphogenesis, for those of you interested in how reaction wood is formed. https://ag.purdue.edu/fnr/associations/IAA/Documents/BiomechanicsOfTreesTelewski.pdf Cobra users should at least read Prof. Telewski's report on tree guying, since it'll likely be used against you some day in a court of law, IMO. Jomoco
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One of my 365 special's has something crossed up in the trigger assembly itself that limits me to half throttle intermittently. But I can feel it in the trigger's travel range being cut in half. Probably nothing to do with your prob. But thought I'd throw it on the table anyway. 372XP's a mighty fine saw IME. Jomoco
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Well the one thing cobra's got going for it? Self aligning! But until we know whether encircling terminations trigger engulfment at X amount tensile force? Self alignment may not prove to be much of a saving grace, IMO. Jomoco
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Spent a little time this morning checkin out the the many cables of this monument fig. I was pleased to see many slack cables, and lots of aerial pillars developing on almost every cabled leader. I firmly believe that in another twenty years time, every cable in it will be redundant structurally, and able to be removed entirely with no ill effects on the tree's structural integrity.
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It takes something special to be an effective teacher. Gerry n August have it down to an art! Wish I had it, but a man's gotta know his limitations. You may be a big fish in your local lake, but once you're exposed to the ocean of pros out there worldwide? For me it was a very humbling experience, and of course a learning experience as well. Great vid, thanks for posting it. Jomoco
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Nice work Ben! Jomoco
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There's an article in this arb mag on how I developed a cabling alignment tool that takes any guesswork out of cabling alignment. http://tcia.org/Digital_Magazine/PDFs/lowres/TCI_Mag_Nov09LR.pdf Yes, it's time consuming, but so's a lot of other high quality arb work. My cable's straighter than your cable...my cable's straighter than your's! Jomoco
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Both my sons work at the Sony games testing division. One's testing the new VR headset games, and tells me a high percentage of the testers get sea sick n nauseous, requiring hurl buckets within easy reach of them! Makes me wonder whether climbers in general have a higher ability to withstand becoming seasick? Something about bobbing horizons and the inner ear? Jomoco
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A question for those of you with hands on experience installing traditional steel support systems to compensate for real, rather than imaginary flaws in the tree's structure? What's the single hardest component of the system to get exactly right? IME it's aligning the anchor bolts to the cable's lay exactly. Doing it by eye's dang near impossible on a consistent basis. Jomoco
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Absolutely Mark, sheer expediency trumping craftsmanship. Reflects poorly on this entire industry IMO. Jomoco
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There's a basic and extremely fundamental flaw driving these attempts to rationalize use of cobra as beneficial to tree or client IMO. It's like throwing everything you've learned as an arborist out the window, and saying that sapling looks a bit peculiar to me, let's leave it staked loosely, and hope doing so has no detrimental affects on proper trunk caliper growth. Very messed up, at a very fundamental level. Jomoco
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I'm gonna bounce my weight on it like shown in the instructional video. If it can't take that without inflicting cambial damage? I won't need a dynamometer to prove my suspicions any further. Jomoco
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So let's do some testing on alders, Alnus rhombifolia specifically? How much tensile force exerted on a two inch wide synthetic strap looped termination point, on say a five inch diameter vertical leader will it take before girdling occurs? 200, 500, 1000 lbs of tensile pull? Jomoco
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Thanks for the feedback Rich, but were they White Birches, Betula pendula? Jomoco
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No, I never have in my career. But I believe outside any cabling sense, installing lightning protection system into high value large trees such as those designated as historical monuments and such. Apparently practiced more on the east coast here than the west coast. I have cabled a few such monument status trees, most of them Moreton Bay Figs, ironically. The decision to cable them was made before I was born, so I bear no responsibility for such historic foolishness being sold successfully in the past. MB figs have aerials that form lateral support pillars quite naturally thank you. Last tree on earth I can think of that'd need cabling. Pushing cabling on a client absent a genuine, rather than perceived fault in a trees structure? Well it may indeed be lucrative, but it's anything but cricket IMO. Jomoco
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Thanks for the comic relief vid Scotspine! Amazing he stayed in character and kept a straight face. Yah, thots preddy effin stoopin heimen! Fanciest CS's I made were leather midline attachable using industrial grade Velcro. They still hurt when they hit yu in the face tho! Jomoco
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Thanks for the kind words colleague of mine, I appreciate them. Cheers, Jon Mooring, rabble rouser extraordinaire! Jomoco
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It's all too bloody true mate. But I'm well aware of my minor league lone wolf status in the tree industry. Pretty much an admitted rabble rouser who flips out every time another groundies gets eaten alive in a whole tree chipper. The latest of which just occurred in NYC a few days ago. http://abcnews.go.com/US/wireStory/police-york-worker-killed-tree-grinder-accident-38896869 Jomoco
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This analysis on lightning truck trees by Purdue seems pretty well documented IMO. https://www.extension.purdue.edu/extmedia/FNR/FNR-FAQ-9-W.pdf But if lightning follows the highest moisture content in the tree to ground, the inner xylem in dry conditions, and wet outer bark during rainy conditions? Would a sopping wet synthetic cable becoming energized heat it beyond its 175 degree Fahrenheit melting point? Even Zeus don't like synthetics? Jomoco
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Apparently not mate. Lightning Myths - Small metal objects attract lightning :: Storm Highway Weather Library Jomoco
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Lightening strikes do start forest fires, and I suspect the men n women fighting those fires would prefer steel support systems holding the trees together over their heads. You'd feel differently in their boots I gather? Jomoco
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I should be getting some input from CDF and CalFire on this subject within the next few days. I'll post their opinions here upon receiving them. So you guys got no problems installing a cobra system in white birch trees eh? Jomoco
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Does the UK have very delicate barked tree species like Alnus Rhombifolia, white alders, or Betula pendula white birch? What happens when a wind gust applies enough tensile pull on the termination straps to girdle over half the circumference of the cabled limb? Ever just step on an alder lateral and dislodge a section right down to the xylem layer? Are there disclaimers stating not for use on fragile barked tree species? While you could exert thousands of lbs of tensile pull to a traditional throughbolt steel system with no damage to either of those soft bark species. Jomoco
