Great Planes 1/4th Scale RV-4 ARF Action Photos

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 Photos By:

RUSS WATSON

Quarter Scale RV-4 GAS Powered

                                                    1st Engine: Zenoah G38

                                                    2nd Engine: Evolution 26 GT

                                                    3rd Engine: Fuji BT-50

                                                    4th Engine: Desert Aircraft DA-50

The DA-50 is by far the best engine, followed by the Evolution 26 GT. The Fuji BT-50 was very disappointing to say the least. It wouldn't perform as good as the 26 GT and weighed a lot more. My Zenoah G38 ran good, but is was modified with an electronic ignition.

The DA-50 has about 25 flights now and all is well. Prop clearance is a bit of an issue as the DA-50 likes 22x8 props. I ended up using a MEJZLIK 20x12 Carbon Fiber. This makes excellent speed and the vertical is super potent.