Originally posted by TerrellFlyer
Have 91fx in aeroworks 540 edge, weight is just under 8 lb on kitchen food scale,minus fuel,zinger 15x6 prop, sig 15% fuel,os#8 plug,will not hover very long then goes into tailslide, vertical is not unlimited,have tried many different props,next is to change to larger engine,bummer.
Dude that sucks
! Um, zinger props are just a plank of wood... go to an APC. If you didn't, try a 15x4W, YS 20/20 fuel. If you wanna spend a little more money go with one of those in cowl Jett mufflers, I hear lots of guys are going with these for your combo. Your combo should put out over 15 pounds of thrust, that's with an APC. A Zinger won't turn the RPMs of an APC, and it's not nearly as effiecient. But the most thrust you could lose couldn't be more than 1.5 pounds...