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  1. Dan Cobb

    Lesson Learned

    They can just transfer the dog from border security to a police force, where accuracy doesn't much matter. In the U.S., police drug dogs are only about 50% accurate. Might as well toss a coin.
  2. Dan Cobb

    Pulley One

    I understand that's what you believe, but it's false. If you don’t have an old physics textbook laying around, you can easily find many online resources on the topic.
  3. Dan Cobb

    1/2" Minimum Rope Requirements??

    Interesting. I have run into several people saying black rope was noticeably stiffer than other colors. I have 11mm PMI in many colors, including black, and I tend to agree.
  4. Dan Cobb

    Lesson Learned

    In my experience, nearly every power plant component is a wear part!
  5. Dan Cobb

    Pulley One

    The contact area does not affect the force lost to friction. "Although a larger area of contact between two surfaces would create a larger source of frictional forces, it also reduces the pressure between the two surfaces for a given force holding them together. Since pressure equals force...
  6. Dan Cobb

    1/2" Minimum Rope Requirements??

    I can't recall ever seeing a rope access accident report where the cause would have been eliminated with a larger rope diameter. I get your point, but today's ropes are so good, you really have to ignore obvious defects or go way outside the bounds of reasonable usage to fail a rope.
  7. Dan Cobb

    1/2" Minimum Rope Requirements??

    How is a larger diameter rope safer? (If a smaller rope is adequately strong,....)
  8. Dan Cobb

    Pulley One

    I think @flushcut made a good point about the rope coming out of the sheave. I can see a pre-rigged MA system made with these pulleys being a tangle every time you go to use it.
  9. Dan Cobb

    Today....

    I think the neighbor I'm working for feeds the deer.
  10. Dan Cobb

    Team Snow Plow: Minnesota Dept. of Transportation

    North Central Alabama, just south of Birmingham. Being named after a vacuum cleaner, you'd think Hoover sucks, but it's a pretty decent place. I'm especially fond of the free garbage pickup, twice a week. And they'll come pick up almost anything that's not hazardous material if you call and can...
  11. Dan Cobb

    1/2" Minimum Rope Requirements??

    Regardless of actual diameter, I prefer rope where the O.D. of the sheath/mantle is greater than the O.D. of the core.
  12. Dan Cobb

    Team Snow Plow: Minnesota Dept. of Transportation

    Would someone please overnight me a box of snow? It was 86 here yesterday, 80 today.
  13. Dan Cobb

    1/2" Minimum Rope Requirements??

    With regards to standards and regulations, "should" generally means recommended, but not mandatory. "Shall" is used to indicate a mandatory requirement.
  14. Dan Cobb

    New Tribe...is closing..oh no!

    The web site says Sophia Sparks is retiring and closing New Tribe. Perhaps the company's financial situation was not strong enough to attract a buyer. Seems like you'd want to sell and have more funds for retirement. But I'm only guessing.
  15. Dan Cobb

    Sailing Winch As Splicing Tool

    If I wanted one for splicing, I'd shop for used winches. A single used winch seems to sell for a fraction of the new cost. Check sailing sites. And I'd welcome cosmetic blemishes to further reduce the price. Don't manufacturers' sites provide some type of spec on the capabilities of winches?
  16. Dan Cobb

    sayings associated with rope (mostly)

    I thought I'd be amused by this thread, but I'm a frayed knot.
  17. Dan Cobb

    Pruner's Remorse: a tale of my Honeylocust

    My wife planted a honey locust in our front yard many, many years ago. Best pruning cut I made on it was the one close to grade, i.e. I removed it. I always hated trying to clean up the tiny leaflets off the front walk and lawn. What a pita. It was extremely prone to splitting in a barberchair...
  18. Dan Cobb

    Make Us Laugh :)

    I have a theory about the last 3 UFOs the military shot down.
  19. Dan Cobb

    Home Foundation Damage

    That would be a bad assumption since the OP said the problem was movement of a basement wall.
  20. Dan Cobb

    Body care

    I'm sure you're well intentioned, but an ice bath has a high probability of causing a medical emergency for me. Reminds me of an old thread where the topic of giving medical advice to people you don't know was cautioned against.

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