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Building Tips and technical articles. => Building techniques => Topic started by: Steve Riebe on September 03, 2012, 11:06:06 AM
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I just acquired a Ringmaster S1 kit, this must be a newer kit as it has planked leading and trailing edge. The Diamond shaped leading edge pieces are missing, they measure 1/4" point to point on the thin side and 1/2" point to point on the wide side. I haven't had any luck searching stock profiles on the internet, hopefully someone can help me find these?
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Check your plans -- that sounds like an S1-A, not an S1.
(The S1-A was actually my first "big" control line ship, with a Fox 35 and all. It lived for two or three flights, until my first wingover, where it absolutely refused to pull out of the downward turn. Knowing what I know now, I suspect a bad stall -- but I don't know. At that point college hit, and I didn't fly CL for nearly two decades.)
I can't help you find a source for the leading edge, but if your building board has a nice straight clean edge on it, you should be able to slice out a 1" x 1/4" strip from sheet, rough in the angle with an xActo knife or a plane, then finish it off with a sanding bar or sandpaper wrapped around a board. Depending on your building board, backing the strip up with a straight line of pins or (much better) a good straight yardstick or straightedge or something would be a big help.
I'm pretty sure that it's not necessary to do the other half of the diamond until you have the wing built up -- at that point you'll have lots of structure to help you hold the LE, and you needed to sand it to shape anyway.
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Looks like I over-reacted on this problem. I was able to cut diamond shape on my table saw, just had to think about it a little so I still had all my fingers when it was over. Tim, you are correct, it is an S1-A. Quite a bit different then my other Ringmaster. Thanks for your reply, and sorry to hear about the short life of yours. I will probably find new and creative ways to destroy mine.
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HI Steve!
Welcome to Stunthanger. Be sure to post some in progress pictures of the build. And feel free to ask any and all questions you may have.
The Ringmaster is over 60 years old now, but still a great model to fly!
BIG Bear
RNMM/AMM