On Friday, November 4, 2016 at 7:32:39 PM UTC-6, wrote:
The question was how does the RJ 5 in its prime performance condition rate in the current Sports Class handicap system. An internet search for the RJ5 measured polar was unsuccessful . It would be interesting to compare the RJ5 polar to a Standard Cirrus, ASW 20, Sisu 1A, etc. the RJ5 was a break through and led the way to modern sailplanes.

Try Soaring mag archives. It has a search function.

Mike