Great Planes metric prop reamer.
This will do the job:
http://www.ebay.com/itm/NEW-Great-Planes-Precision-Prop-Reamer-Metric-GPMQ5007-NIB-/390411767318?pt=Radio_Control_Parts_Accessories&hash=item5ae65ace16
John
Went from 10" Graupners to 9".
DJI 550
Aeroxcraft landing gear and gimbal with Go Pro Hero2
Gens Ace 5500MaH 4S
Runs cooler, holds the wind extremely well and is very quick.
To me, for my setup, the 9" props are perfect.
John
DJI 550
Aeroxcraft landing gear
Aeroxcraft Go Pro gimbal
Go Pro Hero2
5500MaH Gens Ace
Graupner 9x5 props
About 10 minutes flight time. Motors slightly warm.
Plenty of pep.
John
Thanks for the quick reply.
How is the Go Pro mounted on the 550?
I'm not real pleased with my Go Pro Hero with or without the gimbal servos working.
John
Have a 550 with landing gear and Go Pro gimbal.
Using 4S 6000mAh batteries with 9" Graupners. Was using the 10"
Graupners, but it likes the 9" better.
Motors run cooler too.
John