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The big trad gear destructo challenge 9-Nov-2010 At 11:27:51 AM jam

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Just a note but a potentially important one... On the breaking forces explained page you state:

"One Newton is the amount of net force required to accelerate a mass of one kilogram at a rate of one meter per second per second. A kilonewton is 1000 of these units. This is equivalent to the force a mass of ~ 1000kg is subject to under gravity."

Actually a kN is equivalent to the force of a static load of 100kg under gravity, because 1kg exerts a 10N force under gravity. So just divide any newton rating by 10 to get the equivalent kilogram loading.

It's also important to note though that kN ratings mean much more useful than "kilogram ratings", since the kg rating assumes that the mass is static (not moving). So you could theoretically hang 1000kg off a bomber placement without it failing, but what's more relevant is that you'd be able to stop a 100kg mass (a person) falling at 10m/s (a 1 metre fall under gravity) through a perfectly static rope (obviously not that relevant to climbing since our rope is all dynamic, but calculating dynamic rope loading is much harder, and this gives you a ballpark figure).