Kyrilian,

Tech support suggested I install a pair of ribs crosswise - running from
left to right - in addition to the two fore/aft ribs that form the left a
right sides of the canopy defrost air box. Following that, the suggest you
fill the area between the ribs with a micro slurry. The crosswise ribs add
rigidity to the forward portion of the canopy. The microslurry gives this
area more strength.

Lancair makes these suggestions in response to two problems; 1) the
forward portion of the canopy lifting under pressure from the struts and
2) the forward portion of the canopy breaking when the canopy is pushed
open by the wind.

Lancair no longer recommends using the canopy as an airbox with the holes
drilled at the base of the windscreen for canopy defrost, instead they
suggest running a hose to an outlet in the glare shield.

If you take a look at my website (navigate to the builders' log and then
the section on the canopy) I pretty carefully recorded how I completed
this step from Lancair's directions.

Another pair of striker plates in the forward section might do the same
job to keep the canopy from lifting, but I don't know how it might
interact with other things up there.


Mark Sletten
Legacy FG N828LM
http://www.legacyfgbuilder.com