Folks,
A question for you experienced L320/360 builders. I am
building a kit in Australia, which I purchased partly built some years ago.
It is listed as “Kit 304”. However, it was a kit produced in Australia by a
company building under licence from Lancair, in about 1990, so I don’t know
how thekit number relates to what you use in the USA. My query relates to
rigging the flaps. The builder’s manual seems very confusing, as I will
explain below.
·
On page 10-20 at paragraph 12, it states “The flap
should have a travel range from 5/8” T.E. up (from faired in position at the
inboard fillet) to full
down”
·
·
On page 10 -21 at paragraph 14, the diagram indicates
full down occurs with the T.E. of the flap 8 ¾” down from the “faired in
position”.
·
On page 10-24, in the top paragraph, it states “Lancair
flaps…are designed to run from +45deg down to -10deg up (reflex). Note that
the “faired in position” for flaps and ailerons on the plane is actually a
-7deg reflex position” (On my aircraft, 45deg down from the faired in
position gives the specified 8 ¾” downward deflection at the flap trailing
edge).
·
On page 18-19, at paragraph E 1, it states “The up
limit stop should be set to the faired in position (which is -7deg on the
Lancair 320’s) . The 320’s are designed to be faired in for cruise which is
actually 7deg reflex for the aerofoil. Thus for take-offs, you will appear
to visually drop 10 – 12deg of flaps and slowly fair back in for cruise
settings”.
Maybe I’m stupid, but this all seems incredibly confusing
to me. My question is, what is the relevance of the statement that the
travel range should be from 5/8” T.E. up, if you are at full reflex at the
faired in position? Do they require the flap to have the ability to go to
5/8” T.E. up, but then never actually use it?
Hope someone out there can help. Really appreciate
everyone’s input.
Regards,
Rob Stevens
Perth, Western Australia.