Bob, the green prop is a 5x2.75. remember, I'm flyin' combat but FF gas.
Getting some green ones made is in the works.
7x2 is way too big for the VA 049.
I think I've seen a box of your props in Joe Clawson's hands. Lots of sizes there.
Don, the engine will spin the 5.5x2 but it does better with the green prop. More turns, better acceleration and thus height.
The difference between a Cyclon 048 and 061 in re power is significant.
The 5,5x2 isn't a real good choice for the Cyclon 049, despite the fact that a LOT of guys run it.