These are pretty fast props that do drain the crap out of your battery if you are on full throttle. My battery was not up to power so if you are buying these props make sure your battery has good C rating. You can hear the low battery buzzer going crazy now and then on this flight.
As I thought the battery went dead again on the firefly camera but not before it caught the lovely landing! It literally went dead just after the landing. No big deal new battery is now on order for less than $3.
Quad battery used was Graphine 1300mah 65c.
Maybe I will try the 1800 and see.
For your professionally built quad racer email me at
or visit my e-store but contact me before you buy for a better price as ebay are charging $$$$ just to advertise on their site.