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  1. TheTreeSpyder

    aluminium port-a-wrap. is that a bad idea?

    Such wear scary on especially assumed bombpruf position, by softer material . Such imperfections in future at high load creep/movement could severely wear softer parts/ropes sooner than later; if not immediately? Micro fissure cracks is great fear in metal support /connection structures. . i'd...
  2. TheTreeSpyder

    Going in for surgery

    wow, sorry late to the party, many miles shared here and before; Godspeed sir
  3. TheTreeSpyder

    Munter hitch for lowering limbs

    Life on a Line is a remarkable background work, original version was free. . Radial friction compounds; different compared to linear/flat friction linear progression. Both use the same standard CoF numbers for mated surfaces available at several sites , even gov tables as accepted standards...
  4. TheTreeSpyder

    Why 1/3 notch depth?

    i never did this, but when seen such pix etc. always think might be safer to rip down at this point w/o man in batter's box/KZ; or maybe (s)light back cut, evac and high rope rip down as safest. Note how backward rip to round face concentrates to greater compression that is dispersed in proper...
  5. TheTreeSpyder

    Happy Mother's Day!

    (y) (y)..and those aspiring to be ! . In context of tree site, since trees have changed / re-birthed the planet to so habitable(except at it's extreme's) it almost seems more appropriate hear ! Perhaps the Lorax needs help speaking for those without tongues; whom have not only witnessed, but...
  6. TheTreeSpyder

    Why 1/3 notch depth?

    TYSM, forgot about that page in Fundamentals ! . The close to hop/pop can't be dainty, but rather daring. To get the response of the force out; must slap the force purposefully into the 'step'/stop like getting greater response from rubber ball against step/wall. Soft close, pause and slide...
  7. TheTreeSpyder

    Why 1/3 notch depth?

    Philosophically i think to see fully, must look at both sides of coin, why and why not. Play scenario forward and backward in head as well. Soundest solution should look sound from all these angles, as perfect storm to key points, like a martial art. If for nothing else than to move most...
  8. TheTreeSpyder

    drop cut. cutting limbs to fall flat down

    A lot going on in one of these cuts, and these same things set to full scale felling invite BC beast. This is a high stress against it's own wood deal. The full weight against it's own mirror, multiplied by speed squared to me. . i think of it just as Tom Dunlap said, mini felling as Dent's...
  9. TheTreeSpyder

    Why 1/3 notch depth?

    For me the 1/3 guideline always mostly meant hinge fibers then start further than 1/3 back , and their tensioned backfield even further back, more into 1/2 way range for hinge of most width. . Most width affording more side to side control, and a thinner/ more flexible hinge. Especially in the...
  10. TheTreeSpyder

    How rope holds

    Devil's Advocate view:tanguero:: some thoughts(abbreviated) If the non-continuous threads have frictions; a continuous thread in same position, angle etc. at least has potential for frictions from that examination given i'd believe then. >>especially in more elastic forms i would think of...
  11. TheTreeSpyder

    Where do you put your prussic for progress capture on a 5:1 MA system?

    i think @Zebco Kid showed pretty well w/red & yellow upper Prusiks, always have the Prusiks on the Load side of any pulley. Cheek plates or other contrivance (added padlock around rope and Prusik quickly 1x to some one else's existing system)to groom/comb/serve Prusik forward and not get...
  12. TheTreeSpyder

    chinook hitch

    i always thought this chase would go into 'hybrid' metal + rope to extrude this effect, but never thought it would take these forms. Fantastic!
  13. TheTreeSpyder

    Looking for tricks to use pulling rigging lines through tight unions.

    Video unavailable Playback on other websites has been disabled by the video owner Watch on YouTube **************************************** If you are the video owner, you need to tick the "Allow Embedding" checkbox under the "Video Details -> Advanced" tab. If you are not the video owner...
  14. TheTreeSpyder

    Bending moment question

    In trying to throw a smaller top cleanly, with least push back i tried for least amount of angle that still carried away from me, and top not moving very fast. . Tried to keep the weight more vertical down the column of trunk support rather than across. Made a conventional face, but tried to...
  15. TheTreeSpyder

    proper cut for a piece that is tip-tied

    i used tip tie much more for crane lift up, than rig down. usually only when the nose/tip was locked or going into lock position. For me this was just about always from storm/hurricane. Not a fan i guess. But am fan of pre-set rig from ground, but more to the mid tie, sometimes from right side...
  16. TheTreeSpyder

    Is it just me, or is SRT strenuous compared to DRT?

    That is real clean, relaxed looking; might do nicely if showed nuances from from different angles! . i've made quick chest roller out of 1"webbing and plastic clips to just hold CoG close to/parallel rope line a few times. Just played lightly like that some or showed others what they could try...
  17. TheTreeSpyder

    Petzl preliminary research

    Rule carries across even wider to stone, marble etc. >>making wood only part/an expression of an even bigger rule.
  18. TheTreeSpyder

    Petzl preliminary research

    (y) Model view as upper limit benchmark of lossless/friction free potential , thus equal legs of tension as is w/o friction buffer between them. >>Applied as equal deflections from the common apex centerline as the collective sums of force and direction: . Only have 2 xTension as pulley load...
  19. TheTreeSpyder

    Petzl preliminary research

    DIRECTION is many times the most key factor. >>maintaining it's focus can be much greater than maintaining efficiency etc. . i think DdRT as a 2/1 has less than half the elastic dampening of SRT; on a sliding gradient scale response that is not so cleanly, evenly graduated to give 1/2 as much...
  20. TheTreeSpyder

    Dragon Fly Hitch

    Stiff round cord 1/2 diameter of host line to impose best? Half Hitch prefix? Retailer, manufacturer any suggestions or experiences?

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