RE: World A-6 Intruder
hey Oky,the .91 4c has unlimited vertical on the Intruder with 30% nitro (coolpower 30% heli is what most of us S.P.A. guys use) but high nitro might be a problem in your location, if you are forced to use lower nitro I would go with .91 2c . As for which prop on the 2c I'm not sure , there's enough ground clearence for a 13.5 inch though.Hope this helps..................Randy SPA 232