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  1. glens

    fall factor calculator

    http://en.wikipedia.org/wiki/Via_ferrata
  2. glens

    felling

    Me too on the 95%. I'm a control freak.
  3. glens

    Tasmanian Story

    Vikings were pretty good at some of that stuff, I hear. :)
  4. glens

    PETZL Vertex

    I've got the vented one and am seriously considering getting a non-vented one for use at my full-time job where I occasionally leave the ground and need a lid which is electrically rated.
  5. glens

    fall factor calculator

    Here the discussion went to just about this very thing. (Like Mike has said, "so long as your hitch holds") The extra rope in the doubled-rope system acts to effectively increase the diameter of the rope, not the length. If it were to do the latter it would make the system springier. It...
  6. glens

    Mark Chisholm Tie in Technique

    If you think about it, two half-inch ropes have nearly the same cross-sectional area of one three-quarter-inch rope. You'd best figure on the elongation specifications of the larger rope of the same construction when using a doubled line. [pi is a common factor so can be left out of the...
  7. glens

    Insurance (alltypes)

    It's somewhat like a catapult. http://en.wikipedia.org/wiki/Trebuchet
  8. glens

    computer problems

    Does Windows do that now, too? I'm only familiar with Linux doing it for the past several years. If that's the case and the whole user's "home" directory structure was copied over (with the originals deleted afterward), then of course the information will be absent until the files are copied...
  9. glens

    computer problems

    I spend very, very little time in Windows. Can't you copy the whole directory structure, including "My Pictures", "My Music", etc. to the external drive and keep all the ancillary files intact?
  10. glens

    Face cut in dead trees

    Maybe thinner. Definitely taller.
  11. glens

    computer problems

    Hey Cary. I didn't mention them because they don't work across devices :) Thanks for completing my thoughts on the matter of the problem at hand. I guess I'd implied to check if the files on the external drive were actually working still. If they're merely shortcuts to the originals then it...
  12. glens

    computer problems

    The filesystem I use has what's called "symbolic links". I can have a file at a certain place in the directory structure, and I can create another within the structure, or without it, which when the new file is accessed by a software program the original is actually used. The second "copy"...
  13. glens

    Training video - felling a side leaner

    As far as I can see, the calculation I depicted is correct. I cannot figure what it was they were doing to come up with better than three times the value. Which calculator are you referring to when you say it spits out wacko way off results? And what were you trying to figure? I don't think...
  14. glens

    Training video - felling a side leaner

    Erik, upon further reflection, I think the proper way to figure the weight on the rope perpendicular to the end of the object would be to consider it a tangent along an arc encompassing a quarter circle. At the vertical position the tension would be zero and at the horizontal position the...
  15. glens

    State License for Tree Workers?

    We should not forget that in law-speak the definition of "license" is "permission granted to do something that would otherwise be illegal". In order for it to work, doing tree work would have to be made illegal across the board. That's too far-reaching. It would prohibit folk from tending to...
  16. glens

    Training video - felling a side leaner

    It would be 5T 90° to the load if the load were laying on the ground. Less in the air like that, I'd say. Something on the order of 4.14T? I'm working on a little something in some free time. It should be ready before too long. Seems to me that the pull calculator linked to earlier from the...
  17. glens

    Hinge hold video, close ups

    Erik, it looks like the flexibility of the tall hinge went a little way toward negating the effect of the taper. Hard to tell just what all the factors were but it seemed to be hooking to the left just a bit. Perhaps with a skinned tree and a shorter hinge...
  18. glens

    State License for Tree Workers?

    Wow. That was good.
  19. glens

    Hinge hold video, close ups

    I guess I'm a bit confused about all this. What are you saying, Erik? That a full-width tapered hinge is supposed to but does not make the tree fall differently from the notch direction? If so, what would give you the notion it would supposed to do that? In my experience, the tree always...
  20. glens

    .mov video's and what to do

    Re: .mov video\'s and what to do I'm a Slackware (based) fan. Your statement about the Macs, "out of MY control", is precisely my point about Windows. My hands are tied when I sit down in front of an MS box and I particularly dislike that. Most everything done on/to the box has to be done...

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