Is 12 inch props to big for a 550mm Qaud

[jhardway]

I am trying to figure out if they are to big, the thought process it to increase flight time by I am wondering if the vortexes are getting to close together.

 

[RTRyder]

I am trying to figure out if they are to big, the thought process it to increase flight time by I am wondering if the vortexes are getting to close together.

Yes, 12 inch is way too big for a 550mm quad unless it's extraordinarily heavy in which case it should probably be on a bigger frame anyway. For that size frame and depending on the motor kv and battery in use, I'd be using 10 x 5, or again if it had a bit of extra weight to haul around an 11 inch at the most. My WKM quad is around 550mm, uses 925KV motors on 4S, and carries RCCarbon landing gear with a 2 axis GoPro mount and GoPro all on Graupner 10 x 5 props. Flight time is 8 to 9 minutes being conservative, I've flown it to almost 12 minjutes before the WKM voltage monitor kicked in and autolanded it.

Ken

 

[Droider]

I am trying to figure out if they are to big, the thought process it to increase flight time by I am wondering if the vortexes are getting to close together.

As ken says way to big.. think the WKM like to have stuff spinning fast.

Dave