Double Arm Chin to One Arm Chin Data

[Jesse OBrien]

Does anyone have any information on any strength indicators that would support having a one arm chin-up? Particularly double arm pulling strength necessary for a one arm chin-up? Expressed as an absolute or relative % of weight. For example:

BWT 175
Weight Pull-Up 140
Relative to BW = 82%

Any data that supports that a particular ratio, would demonstrate the ability to perform a OAC?

[Everett Carroll]

I'm not sure about anything that specific but I have been playing with slow negatives on the rope (6-10 seconds per arm) and am now really close to OAC as a result. 

[Alessandro Mainente]

two arms and one arm have a different dynamic activation. on the one arm version there is much more stabilization in the shoulder girdle for this reason there is no double hands weighted work that prepares adequately fort he one arm chin up.