> > a ~= 74.38 g Ok, thanks, but that impact is what I'm looking to quantify. I have times of 1/1000 to 1/2000 sec for the impact, various sources, fair reliability I think. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist