I am 141lbs, I was wondeirng how much weight I should do for Pendlay Rows, should I be able to do my body weight?
Probably not. Start with what seems light and work up from there, like any lift. It's smart to err on the light side than try something too heavy and hurt yourself.
Give chalk a chance.
49 years old
How much you 'should' do is how much you can handle with proper form right now. Then slowly increase from that point.
Pendlay Rows aren't considered a "major" lift, more of an accessory lift, so I doubt you're going to find any strength standards on them. If you do bent over rows, then for Pendlays I'd start with about 10-20% less than you do for those to start out with.
I always thought that it is good to have a balanced push pull. My bench is 240 for 3, and my pendlay rows are 245 for 4 so they are pretty balanced.