Most of the eletric planes use gear boxes, 4:1 seams to be popular. As for stronger/faster servo's, you can get gear kits for them. Have you looked around www.TowerHobby.com, Hobby Lobby? Ebay is another good place for RC parts, i buy box lots get what i want, re-ebay what i don't want and wind up getting mine for free or real close to it. Been building my entire plane that way, allmost done now.