> Matt-
> > Yes but they are troublesome. It is automotive practice to use
> a 15 psi radiator cap but most rotary powered aircraft are now using

30

> psi caps.
> I see no advantage in plastic over aluminum for aircraft use.
> > Paul Lamar ...No rotor no motor.
 
There is always transparent aliminum!
--
Blake C. Lewis

That is a new one on me. In fact I have never heard of
aliminum let alone transparent aliminum :)

I think it was a joke in refferance to the Star Trek movie where they
went back in time to current day earth and tought some chemical engineer
how to make transparant Aluminum. ;-)