On 10/10/2019 11:38 AM, Mark Langford via KRnet wrote:
Templates for the new horizontal and vertical stabilizers are located at
http://www.krnet.org/as504x/ . See the link near the bottom, named
"Free KR2S Airfoil Template Downlaod". Any of the three choices
includes tail templates. Incidence for the horizontal stabilizer should
be near zero.
Mark Langford
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My KR is stretched 24", 0-200 engine, RAF48 airfoil, standard tail
volume and average takeoff weight of 1100 pounds. At cruise, 140 to
150mph, with zero pitch trim, if I let go of the stick I get a near
violent nose down pitch. It would throw things off the seat. My
horizontal is set at zero degrees. From testing it appears my fuselage
is flying at approx 1.5 degrees nose up, putting my horizontal at 1.5
degrees + incidence. If I were to re-do, knowing what I know now, for
my specific KR, I'd probably go with 1/2 to 1 degree negative incidence
on the horizontal. Trouble is there is no way of knowing when building
just how it's going to work out.\
Motor part are on the highway headed my way. Leaving town for the weekend.
Larry Flesner
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