All of my electric airplanes up to this point have been profiles with every thing hanging out in the wind.  However most of the pictures I have seen of built up bodies pretty much have flow through designs.  Most add an air scope on the bottom front and an air exit hole on the bottom just in front of the wing. also headers are open to allow air flow.  You need good airflow too keep everything happy.


 Look at the pictures in reply # 6 of: http://stunthanger.com/smf/index.php/topic,36031.0.html


As you can see every thing is open for air flow. I expect you are looking at the bottom.  The finished airplane probably has an air scope right in this area.  Just looking at your airplane pictures things look too boxed in.  Some how you need air flow over the motor, speed controller, and battery.  The KR timer protects for a lot of problems but if it stops the motor due to overheating the damage will have already been done.  Electrics, by nature,  just keep trying harder when things go wrong.  Smoke will soon follow.

Look at the pictures in List Your Set Up.   You will see many full bodied models. They all seem to have an air scope in front.