Having survived my question, and further to Lomcevak's response, I found this:
http://people.clarkson.edu/~pmarzocc.../AE-429-12.pdf
I'm not sure how to turn it into a link, or post it as a pictures for all to see but on page 5 one will see "pull up" and "pull down" turn radii calculations.
I wouldn't know where to start with these because I'm not very adept at sums, but surely someone here would have an idea, and might even be able to put some rough examples together. (eg an average 5 or 6G pull down at an average TAS at say 225 or whatever).
Also, the "pull down" chart has an interesting annotation. It's perhaps obvious when one thinks about it, but due to the increasing speed the rate is reduced and the radius is enlarged in the case of a "pull down" when compared with a "pull up."
Maybe food for thought when reviewing DA's?