http://www.evflyers.org/e107_images/...INE-THRUST.pdf ,This chart was produced and posted on RCU comparing engines but if you study it a bit you can see the Zinger Pro compares favorably to and better than some well known props. I did watch Pat try out a bunch of props he brought back from Toledo. His T52 really came to life on the NX. I would expect you are getting very similar performance with the Zinger.