Steve's GP Ultra Sport 40
Enya powered with tuned pipe (hidden in fuse!) and retracts.  Guided by Futaba.
The rear exhaust can be seen here.  The red cone shaped items on the fuse are for cooling of the pipe.  Air come in the front by the pipe, and is exited out through the sides.  The pipe's exhaust is on top, just in front of the rudder.
Simple PVC stand, filled with sand so it satys put.
Steve's Airtrax 40.  Flies like its on rails!  Also Enya powered.