Quote Originally Posted by Darkfalle View Post
1. Armor of Emperor Ferdinand I; Weight: 52.9 lbs
http://www.metmuseum.org/works_of_ar...=40002166&vT=2

2. Late German Gothic Armour of the
Archduke Sigmund; Weight: About 40 lbs
http://www.myarmoury.com/feature_gothic_armour.html

If you look at any modern reproduction, they tend to weigh about the same as these two examples.
Heck, if you look at a modern soldier's overall combat kit, you find that this 40-60 lb limit of what a soldier can wear/carry and still be effective is probably an empirical number that has derived numerous times independently as far back as history goes.