Hangar 9 - Hangar 9 aircraft such as the RV-4 30cc are designed to accept a variety of gas engine or brushless electric powerplants. Now through November 21st, order $250 or more
FlyingRC.net - Hangar 9 RV-4 – The Build
Tailwheel Assembly: Van s RV-4 30cc - Modellsport Schweighofer