Greyhawk -

 

Yes, my eyeball air hoses are 1.5 inch SCAT.  Reports from earlier Lancair builders suggested that the panel-mounted air vents provided insufficient air.  Many builders mounted the eyeball vents directly to the sidewall NACA ducts to get more air.  But you know all this -- you were part of the early crowd.

 

The eyeball vents from Lancair came with a cap for a  tiny, tiny SCAT tube coming in from the side.  Maybe 3/4 inch.  Small.  I bought adapters from Jon Pastusek (also available from aircraft spruce) which allowed a 1.5 inch SCAT tube to go directly to the back of the vent -- no 90 degree turn required.  I hope to have plenty of air.

 

If it's too much, I'll close it partway.  But I live in Arizona now and I suspect that I'll have it wide open.

 

- Rob Wolf