Hello,

I´ve just bought a Matt Chapmans Cap 580 ARF .46 and I am not sure which engine to install. I fly in Mexico City at 8000 feet above sea level so we lose about 25 to 30% of the power comparing to flying at sea level. The manual states a .46 to .61 2 stroke or a .52 to .70 4 stroke. I have a Saito .82, a OS .61 2 stroke, a Supertigre .75 2 stroke. Which one would anyone recomend?

Thanks