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General control line discussion => Open Forum => Topic started by: Tim Stagg on April 05, 2022, 12:53:18 PM

Title: Where to place zig zag tape on wing and stab?
Post by: Tim Stagg on April 05, 2022, 12:53:18 PM

All,

I am sure there is a post about this somewhere, but I would like to know the optimum place, "how far back from leading edge", to run the zig zag on my plane. I saw this Fitzgerald and Barry applying it at last stunt camp, but cant remember where it was placed.

Parallel to leading edge? or perpendicular to fuse?

Thanks

Tim

Title: Re: Where to place zig zag tape on wing and stab?
Post by: Paul Walker on April 05, 2022, 01:19:46 PM

The consensus is that placing them on the 1/4 chord is a good compromise. If your 1/4 chord is straight, then it would be perpendicular to the fuse center line. Most stunt planes have a swept aft 1/4 chord.  Mark a spot on the inboard portion and outboard tip indicating the 1/4 chord spot, and connect the two spots with the zz tape.

Title: Re: Where to place zig zag tape on wing and stab?
Post by: Tim Stagg on April 05, 2022, 02:55:02 PM

Thanks Paul

Title: Re: Where to place zig zag tape on wing and stab?
Post by: John Carrodus on April 06, 2022, 01:47:53 PM

Scoozey please. What is zig zag tape?

Title: Re: Where to place zig zag tape on wing and stab?
Post by: Tim Stagg on April 06, 2022, 02:56:44 PM

it is a clear packing take that you cut into about 3/8" strips with a pinking sheers or a pinking roller cutter and place them on the wing an stab to produce a similar affect to vortex generators. I am sure Brett or Paul can give you a scientific reason why they may or may not work. however, folks that use them say it helps lock your plane in.

I can not explain why, I just would like to try them to see if they make any difference in my airplane.

It is suggest that you use gorilla packing tape because it has a much thicker mill

Title: Re: Where to place zig zag tape on wing and stab?
Post by: Dennis Nunes on April 06, 2022, 07:10:15 PM

There is a short article about Trip Strips that I put together that is on the Flying Lines website that might be helpful. See http://flyinglines.org/nunes.tripstrips.html (http://flyinglines.org/nunes.tripstrips.html) for further information.

Dennis

Title: Re: Where to place zig zag tape on wing and stab?
Post by: john e. holliday on April 06, 2022, 07:55:03 PM

Dennis, very well written article.  May try them when and if I decide to build another competition stunt plane. D>K

Title: Re: Where to place zig zag tape on wing and stab?
Post by: Larry Wong on April 06, 2022, 10:44:04 PM

Or this is what I found.    https://wingsandwheels.com/tapes-seals/turbulator-dimple-tape.html

Title: Re: Where to place zig zag tape on wing and stab?
Post by: Tim Stagg on April 07, 2022, 07:38:03 AM

Dennis,

Thanks for the link to the article, great writeup!!
Cant wait to try them.

Tim

Title: Re: Where to place zig zag tape on wing and stab?
Post by: Dennis Toth on April 07, 2022, 10:10:01 AM

How do the ZZ strips work compared to just a straight 0.010" length of wire or fishing line positioned in the same location along the wing and stab? Does the size and angle of the ZZ cut make a difference?

Best,   DennisT

Title: Re: Where to place zig zag tape on wing and stab?
Post by: john e. holliday on April 07, 2022, 10:57:05 AM

Quote from: Dennis Toth on April 07, 2022, 10:10:01 AM

How do the ZZ strips work compared to just a straight 0.010" length of wire or fishing line positioned in the same location along the wing and stab? Does the size and angle of the ZZ cut make a difference?

Best,   DennisT

Try it out and tell us your results. S?P D>K