All test done again with 2000kg.
Uniball housing outer part stress chart
http://img845.imageshack.us/img845/9...keulkopuol.jpg
Uniball housing outer part displacement chart
http://img814.imageshack.us/img814/9...keulkopuol.jpg
Uniball housing outer part when load is 10 000kg, factor of safety is 0.85, notice the red little weak spots
http://img707.imageshack.us/img707/9...keulkopuol.jpg
Arm attachment part, FOS is 1.38 with 2000kg load.
Arm attachment part stress chart
http://img714.imageshack.us/img714/5...nikestress.jpg
Arm attachment part displacement chart
http://img845.imageshack.us/img845/3...kedisplace.jpg
Arm attachment part when load is 6000kg, factor of safety is 0.45, notice again the red little weak spots
http://img221.imageshack.us/img221/3...e16000kgyg.jpg