Question

[wingman101]

Hey guys i have ask this before . I have part # CF-49 this is Intercostal parts they are all wood. Iam going to post a photo iam still not sure about
this part.

[SkyPirate]

OK I'll bite ,..they look to be tappered down in length and in pairs ,..so my guess is they are tail surface aerodynamic surface blanks ?

Chase

[wingman101]

Is this used on the kitfox 2 kits ? This blows my mind i dont see them in my manual.

[SkyPirate]

my model 2 had flat tail surface,..so I can not answer that question with confidence,..one way to check would be seperate them spaced out over the tail construction starting with shortest towards the outer tips ,..then see if they evenly spcae each other in the length increments ..8 inches apart? 9 inches apart?

Chase

[SkyPirate]

going from left to right ..the first six might be the horizontal stab rib blanks ..the last six might be the elevator rib blanks

[wingman101]

I will give that a try. I would think mine would be a flat surface.

[SkyPirate]

they should line up with each other from the horizontal stabilizer to the elevator once spaced out if they are in fact tail surface blanks,..

I can't remember seeing the strips any where on my model 2 ,..I didn't build it ,.."Acroguy" (Dennis Sawyer) ,..he built it and is on the forum.

Chase

[wingman101]

Here is what i come up with . You may be right here is a photo.

Brian

[SkyPirate]

yes ,..looks like they were intended for the horizontal tail surfaces ,..I've actually seen a few different aircraft of model 3's and 4's that had flying surfaces on horizontal tail areas only ,..none on the vertical,..
I can tell you the 2 fly's well with flat surfaces ,..your cruise will be around 75 mph depend on prop and pitch settings,..
the airfoil surface has less drag so you might gain a couple mph in cruise
,..the difference will be how close you keep your gaps closed,..the laminated air will seperate more from the elevator leading edge area the larger the gap creating like a buble of disturbed air at the hinge point between the horizontal stab and the elevator,..this same effect will be on the vertical surface and rudder as well.

Chase