Tilly will happily give you, at no charge, additional cut-to-size foam
inserts. I have three in my hat, but I've met another pilot who flies with
a pair of socks in his hat in rough air.

wrote in message
ups.com...
Hi,
I use a Tilley Hat. It has a 1/8" dense foam on top. IT help some but I
dont know about rotor turbulence. Tom Knauff sell them.
S6



Bill Daniels wrote:
"Vaughn Simon" wrote in message
...

"Bill Daniels" wrote in message
news:rKGtd.730764$8_6.17288@attbi_s04...

I'm starting to think about a pair of short arms that swing down
over
the
pilots shoulders and lock in that position. The idea is to
provide an
additional, robust restraint to prevent the pilots head from
hitting the
canopy. Opening the canopy would release the locks so the arms
would
spring
up and back out of the way.

Wouldn't a bicycle helmet be much simpler and lighter?

I've never seen one that was small enough to fit under the canopy.
Anyway,
that doesn't protect your neck.

Bill Daniels