Posted for bob mackey <n103md@yahoo.com>:

 Lancair Kit Components sells a sun visor that fits all of the
 Lancair airframes. It can even be retrofitted to 235's with the
 parallelogram canopy. I've even seen it used by RV-7
 pilots in an attempt to convert MPH into Knots..
 
 I installed mine in just a few minutes without reading
 the instructions. Pretty much all you have to do is
 grasp the button on top with a pair of dikes and pull.
 Bonding a phenolic block in place is not necessary,
 but might be useful if your cranial canopy is especially
 smooth, or if your velcro is worn out like mine.
 
 -bob mackey
 
 
 http://www.lancair-kits.com/lancair_gear/CPWHT.jpg