Search results

  1. Dan Thornton

    Guy rope angle for side lean pull over

    Here are five variables that are good to think about: 1. height the guy line is attached to the falling tree: Higher = more control. 2. distance from the tree to the guy line anchor: Farther = more control. 3. tension of guy rope: Tension should equal the leaning force of the tree in the...
  2. Dan Thornton

    Throw line tricks and tips learned over the years

    I discovered a new trick (for me) yesterday in double-bagging. I was starting another day in a job that included dead-wooding 24 white pines. So happy - very first Big Shot toss was PERFECT! Exactly over the high crotch (TIP) I wanted, but of course throw ball kept sailing high in a second...
  3. Dan Thornton

    Work Photos

    Thank you very much for the explanation.
  4. Dan Thornton

    Work Photos

    Would you explain the haul-back line?
  5. Dan Thornton

    Today....

    The chestnut tree roots are still living! Shoots grow and may get as much as ten-feet tall but die before maturity. I saw many of them on the Appalachian Trail. They used to say that a squirrel could jump from chestnut tree to chestnut tree from Tennessee to Vermont without touching the ground.
  6. Dan Thornton

    Bend radius for rigging

    I apologize that my diagram of the highline forces sent this discussion in the wrong direction, I'll take the risk to add another diagram. Corrections will be much appreciated. First, rigging forces are NOT like highline forces. That is because the rigging line goes THROUGH the hitch. The...
  7. Dan Thornton

    Garage sale of items

    I'll take the Petzl spin and the ISC block. Will send DM.
  8. Dan Thornton

    Bend radius for rigging

    It appears there is a difference between pressures on deadeye slings and forces on highlines. Below is a chart for crane work with choking slings. Forces don't appear to be nearly as extreme as for highlines. Muggs, your definition - "Deflection is a tensioned rope between 2 anchors, being...
  9. Dan Thornton

    Bend radius for rigging

    The above math makes a LOT of assumptions in areas where I am ignorant. The numbers are based on forces of highlines and hammocks. I found two more diagrams (below) that illustrate. However ... does the friction at the tie-off diminish these forces? I sure love using an ultra-sling with a...
  10. Dan Thornton

    Bend radius for rigging

    If the block is tied tight to the tree stem the forces get large quickly. And don't we all want to tie it as tightly as possible??? In setting up a hammock, some people try to tie the hammock straps as tightly as possible to the trees. This is a huge mistake. Ideal is having the hammock straps...
  11. Dan Thornton

    Today....

    Not L. Tulipefera (tulip poplar). I believe they are Populus 'x canescens' (gray poplar). Planted as a hedge 30 years ago - not the best choice for a hedge. I'll have to look closer to see if there is special reason for their decline other than old age.
  12. Dan Thornton

    Today....

    Here are six of nine dead and dying poplars I'm removing.
  13. Dan Thornton

    Gear for Sale

    I'll take the 2 TriRigs. PM coming your way.
  14. Dan Thornton

    More thoughts on the finer details of rope walking ascents

    I figured you had many years of thinking about this, which is why I asked ... You put in words what my mind had yet been unwilling to accept. It's impossible to relax totally, since my body has to be behind the taut rope. Your description - "basically a 'C' shape" - reminded me of one of my...
  15. Dan Thornton

    More thoughts on the finer details of rope walking ascents

    That is my habit. Busted! I will consciously 'test' the hitch to see if it automatically engages more often than just before the climb. Thank you. Here's my question, if I can put it in words. It's about how to develop endurance in doing long ascents. Where is the balance point in rope...
  16. Dan Thornton

    Today....

    Never before worked in dense ivy. Now I'm looking at three jobs covered with it.
  17. Dan Thornton

    Pillow Talk

    There are good chiropractors and bad. I went to one 30 years ago with only little help, didn't go back. So glad, because a family member started going to her and got pulled into a swamp of strange mythical and mystical procedures. Then eight years ago, I went to a different chiropractor for...
  18. Dan Thornton

    Climber looking for work in Asheville, NC area

    My tree business consultant strongly suggested doing any business only part-time (2 days a week) for at least a year. Boy that was great advice. First, I still had my main job and didn't hurt myself while I was still bidding too low. Second, all my income could go into more training and...
  19. Dan Thornton

    Another physics spinoff question - back leaning

    Codom came down a long way, but not all the way to the felling cut. I did benefit from my tree expert in three ways. One was the codom. When I climbed and tied the pull rope, I included leads from both sides of the codom in the running bowline loop, at his suggestion. Second suggestion he made...
  20. Dan Thornton

    Today....

    Here's the one that got away. I was able to refer another company that will do the job for less than I can. Would have been fun, though. Probably would involve a combination of speedline and span rigging. Only a little bit of free falling possible. Job is to remove a black birch and a shagbark...

New threads New posts

Back
Top Bottom