haha right now it holds about 48fN if I rebuild the axles out of not hand bent copper wire it would probably work a little better. Need to find some better springs too, will probably try and rebuild it next chance I get, just gotta make that trip to the hardware store. Could probably pull test this to death but I don't have access to an instron(pull test machine) so it would have to be a natural crack with... maybe my body weight or some big rocks? I guess just test the static load rating?? ideas??