RE: intercepter jr to electric
Dan,
Very good, I found the Interceptor Jr. summary [link=http://www.modelairplanenews.com/ma/plan/fsp0804a.asp]here[/link] on the MAN site.
Without seeing the plans, I can make a few observations that you might consider. From the size of the fuselage and nose, you may want to try using a simple and inexpensive Speed 300 motor in a direct drive setup using a Zagi "spoon" 5x4 prop on 6-7 cells NiCd/NiMH or 2-cell Lithium pack. A 10amp ESC would work well with this combination.
The [link=http://www.hobby-lobby.com/speedplus.htm]GR6365[/link] Graupner Speed 300 PLUS motor has the ESC built right onto the back of the motor. The [link=http://www.hobby-lobby.com/slowprop.htm]HLFK5555[/link] 5x4 prop will press fit right onto the motor.