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Recent content by dbldrew

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    Ropeman Safety

    well kinda, you can still get elongation on the part that wraps around the tree.. although it would be reduced due to the friction of the tree. but even if you are talking a 3 foot tether not including the wrap. if you have your tether height right around head height.. 3 foot puts the end of...
  2. D

    Ropeman Safety

    a 3 foot tether wouldnt leave you any slack to generate a fall anyway. in fact that probably wouldn't even give you enough to fit around a tree and have anything to attach to in the first place. Most people I'm assuming are running ballpark 8' tethers which even with that doesn't leave you much...
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    Ropeman Safety

    im not sure what you mean. But the longer the distance from belayer to climber means more rope, which = more bungee effect reducing the kn on gear/climber So even with that fall calculator it shows a 200lb person with a 20foot rope and 6 feet above anchor = 6.6kn But that same 200lb 6 feet...
  4. D

    Ropeman Safety

    ok gotcha, but that website is calculating on rock climbing not saddle hunting so the rope distance (belay to climber) is taken into the calculation
  5. D

    Ropeman Safety

    i quoted math in my post that then revealed that a 4' fall generated 24,000lbs so i kind of figured that that website was a bit off as well
  6. D

    Ropeman Safety

    that 80kg is just for the rating, so a 3.3% @ 300lbs will have a much higher % at 900lbs, so if you are generating ballpark 800-900lbs from a fall you are probably very close or even surpassing the 1' mark that the calculator is using. Honestly this is kind of pointless, because really for...
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    Ropeman Safety

    I would not want to fall 3' on a static rope. but I would be confident that it would stop my fall even though it would be very uncomfortable..
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    Ropeman Safety

    yes i lead trad.. although this last year was the first year I got back into climbing after taking a long break due to elbow issues. Mostly did TR but with 1 really easy sport route (although that was just so i could access the bluff top to set up a TR on another route) but yes when I was...
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    Ropeman Safety

    I have been doing this for years as well and you are just not understanding the input.. The longer the rope the more bungee effect you get. thats a fact and is always taken into account in calculating the kn that is generated. what you are saying is that calculator does not take into account...
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    Ropeman Safety

    no you are not understanding how it works.. look at this gif.. the climber climbs past the last anchor in the gif he is ballpark 6' past his last anchor when he falls, so 6' above means he will be 6 feet below before the rope starts stopping his fall (plus whatever slack the belayer has...
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    Ropeman Safety

    this is the calculator that does not work. Your example of having 2' of rope is not the fall distance, thats how much "bungee" effect the rope has, the longer the rope the more give you have. The distance from last anchor is the fall distance (fall distance is 2 times distance from the last...
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    Ropeman Safety

    even static ropes have elongation, the standard for static vs dynamic is based on the % of elongation with a 80kg weight, a static rope with a 80 kg hanging can have up to 10% elongation, a dynamic rope can have up to 40% so that 1' is pretty close
  13. D

    Ropeman Safety

    yeah after thinking about it 1.06kn doesnt make any sense either that is only like 238lbs so that seems way to low for a 4' fall. (and noticed the calculator was for joules per meter to KN) The problem im having is every fall calculator gives wildly different results based on the same numbers I...
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    Ropeman Safety

    I think its a typo in the example, converting 1059 J to Kn is not 106kn its 1.059kn its rounded up to 1.06kn they just forgot the "." in the example im thinking? (or my link is also garbage lol) I mean 106Kn is almost 24,000 lbs.. your not generating that kind of force with a 4' fall that...
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    Ropeman Safety

    Ok so you have "literally" taught college courses and you are saying there is "no dependence on fall distance"?!? WOW So you say that foot pounds is a torque but not a force.. do you know what torque is? (rotational FORCE) wow again The fact that you are still trying to defend the model from...
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