XP-2 Plan Missing Something?

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Well-Known Member
Jun 26, 2016
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I downloaded this plan from the NAR's website, but there isn't anything that I can see about how to attach (I'm assuming) a rubber band/elastic to get the wings from the swept to open stage? Has anybody ever built one of these that can provide more info?

View attachment XP-2-B-RG-King.pdf
Though not exactly the same design/model, that does provide clarification enough to incorporate it into the plans I have. Thanks.
I figured that would be enough to get you going. I notice that the next size up (XP-2 C) uses rubber bands attached at the rear with fishing line going around the wing pivots and attaching to the front of the wing. You can find it by searching google for Al Nienast rocket glider.