Propellor clearance distance

[Fat Corgi]

Just a quick one. What minimum distance do people have the propellors from each other? I am interested in those who run flat 6 and flat 8 configurations.
Cheers.

 

[Pumpkinguy]

Phantoms have about 10mm. For the really big aircraft that may have frame flex while under load like banking hard I would want more.

 

[Fat Corgi]

This is large octa, so no aerobatics are being performed. Camera ship. Possible vibration is my main concern.

 

[LeeT]

I have a 650 hex, and mine have a 20mm clearance. Clearance was determined by using the largest prop (12") without hitting each other.

 

[LordPikaChu]

You are looking for at least 25-50mm clearance between props on bigger craft. The more clearance, the better it will behave in windy conditions.