Carbon fiber prop spinners/$1800

[skymstr02]

Originally posted by Don Hickman
Thanks for your info on spinners. I've had a similar experience. Question: Other than cosmetic, is there any reason to have a rear spinner?

They are required equipment per the FAA Type Certificate Data Sheet, as they are part of the engine cooling system. The smooth out the airflow in/out of the cowlings.

The military O-2A's have a different engine baffling than the civillian counterparts, therefore, don't require them.