Ailerons and Flaps
#1
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From: Marathon,
ON, CANADA
I'm in the inital stages of constructing my very first Zirloi Warbird. My choice of aircraft is the JU-87 Stuka. I'm hoping someone out there can assist me on a few questions.
Q1. What is the procedure in relation to constructing groves for
the ailerons and flaps. The plans specify the use of wire or
(3/32 in. dia. wire) weldon rod for the hinges. I'm aware
that Great Planes has a hinging tool that might assist.
Q2. Somewhat off topic here. Is there a possible web-site that
strictly deals with Stuka type questions and pictures. Is
there a Stuka club out there?
Note: I'm very new to the construction phase of building a
Warbird such as the Stuka. But, I know that I can do it.
regards,
Wayne
Q1. What is the procedure in relation to constructing groves for
the ailerons and flaps. The plans specify the use of wire or
(3/32 in. dia. wire) weldon rod for the hinges. I'm aware
that Great Planes has a hinging tool that might assist.
Q2. Somewhat off topic here. Is there a possible web-site that
strictly deals with Stuka type questions and pictures. Is
there a Stuka club out there?
Note: I'm very new to the construction phase of building a
Warbird such as the Stuka. But, I know that I can do it.
regards,
Wayne
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From: Pembroke pines, FL
Wayne....I have built and own several Ziroli planes...also know 3 guys with the "Z" Stuka...the best suggestion I can give is to do "EXACTLY" what Nick suggests to do on his plans/Instructions...all his stuff flys beautifully....so you cant go wrong doing it by the instructions....GOOD Luck .....Bill....
#3
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From:
I'm really not sure if this applies to the question your asking but here is a pic. of the servo set-up I built for a flapperon system for a Midwest Aerostar .40. The servo shown is the servo that controls the ailerons via a piano wire that runs through a hardwood trailing edge and into the aileron. This is my second plane like this and the other plane was built without the flapperon system. Both have/had a high speed flutter coming out of a loop or in a dive at full throttle. I am sure it is because of the slop in the hardwood trailing edge where the piano wire goes out to the aileron. The reason I'm sure is because the control point broke out during an emmelman and I had to fight the plane to the ground with very sloppy alieron response. I flew it around and the roll rate was about half of what the plane usually was. At the bottom of the system in the pic is where the flap servo used to be but has been replaced by laminated ply spars. The white arrow points to where the linkage used to attach to the slide for the ailerons. This is what broke loose.
I have also built a Midwest Mustang .40 (10 years ago) and if I remember correctly, it had a plastic sleeve on the wire where it went through the wing to the aileron and did not have any flutter that I can remember. I ran the Mustang on 25% fuel and a APC 9-7 prop and it was very fast. I fly the Fox .40 on all my small planes and consisently out run my friends O.S. 46. (My Aerostar vs. his Durastick)
I guess the point I'm trying to make is that any slop or play in any control surface hinge or linkage can result in a possibly destructive flutter.
I have also built a Midwest Mustang .40 (10 years ago) and if I remember correctly, it had a plastic sleeve on the wire where it went through the wing to the aileron and did not have any flutter that I can remember. I ran the Mustang on 25% fuel and a APC 9-7 prop and it was very fast. I fly the Fox .40 on all my small planes and consisently out run my friends O.S. 46. (My Aerostar vs. his Durastick)
I guess the point I'm trying to make is that any slop or play in any control surface hinge or linkage can result in a possibly destructive flutter.
#4
Although singles are not my thing, I would suggest that Nick Zeroli has a forum for just such questions at http://www.ziroliplans.com/hints_frameset.html
Good Luck,
Good Luck,
#5

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From: Scottsdale, AZ
Wayne, it sounds like you are thinking of hinging the Stuka like any other plane. This is not scale for the Stuka, they had their ailerons and flaps suspended beneath the trailing edge. Look at your plans more carefully, specifically the sheet with the wing center section. There are some profile shots of the dive brakes and the ailerons. I suggest you study your plans more Wayne. Thats the one thing that I hear the most from the more experienced builders, is study study study your plans. When you see the diagram youll say to yourself "Ah I see how it works now". You'll get it Wayne, no problem!!




