In the last issue of Radio Control Jets International (traplet magazine) which you should be able to get through any better hobby shop or book store, they did a review on the Super Reaper. He didnt go into too much detail regarding the flight aspect but he covers the building including adding retracts pretty well.

I think I may try and fair in my fixed gear with balsa and monokote it to match the plane, to see if I can gain a few MPH. In my books on aerodynamics and model design they say that even a 1/8" diam music wire and 3" wheel have a lot of drag, more than you'd think. I like the fixed gear for the durability and simplicity but you do give up speed. Thats OK for the first jet though!!

Andrew