Eric Truax M.A.G.P.I.E. (Plan)
Contributed by John Lee
Construction: There are no instructions, per se. Only an exploded diagram. Anyone who has built a couple of rockets should be able to manage.
Inexplicably, I next headed for the motor mount. It is nothing more that a rectangle of cardstock with a glue tab that is rolled into a tube and glued. A spent motor helps in making sure the final product will be usable.
The bottom ring is essentially the same as the middle except that it is a bit larger. This made it easier to cut out because the radius is not as tight. The end tab was glued to form a ring.
The same procedure was used for gluing the previous assembly to the bottom ring. I looked for match lines in the artwork and then glued opposite sides first, later getting the rest of it glued.
I did have some issues getting the after bulkhead to fit within the body. I had to do some sanding around the edge to get it to fit. Then when I glued it, I pushed too hard in some places and got it too far in. I finally decided that it would not be visible and let it be. The motor mount was slipped in and glued into place.
PROS: Looks good, unusual, free Finishing: Construction Rating: 4 out of 5
It took a month to get another launch window but when it came, I was ready. I had heard that this is a good little performer but really did not know what to expect. I chose to fly the Blue Magpie first because it was the fist one to come out of the box. I loaded it with an A10-PT, set it off and was amazed. It really screamed off the pad. It flew straight and true and tumbled gently down. The Blue Maggie performed so well I wanted to see how well the Black Maggie would do with minimal thrust. Accordingly, I loaded a 1/4A3-3. It too flew straight but seemed to start to curve over a bit as soon as the thrust ended. It spit the motor about 50 feet off the ground but had a reasonable, if not spectacular flight. PROS: good performer on entire range of 13mm options
Flight Rating: 5 out of 5 Summary: Overall Rating: 4 out of 5
What You Can Do
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Brief:
Since there were no instructions, I decided to deviate from standard practice
and NOT work on the motor mount first. I cut out the top of the rocket with a pair of scissors, applied a bit of
"bend" to the cardstock and glued the tab.
The middle section of the body is the most tedious part of the
build. The long rounded strip is cut out. One edge is curved, one is straight and one is practically straight but the
top edge is a pain because of all the little glue tabbies. The radius of the inner curve is such that getting the
scissors lined up right is difficult without hitting the opposite edge. Patience pays off however, and the actual
assembly consists of nothing more than gluing on the edge tab to form a ring. This is made slightly easier by
precurving the cardstock.
I started putting the body together by gluing the top to the
middle. At first, it was madening trying to get everything lined up but I hit upon a solution that worked out well and
was repeated when I build the other variant. I first glued just the section where the "S" of the
"NSL" logo was matched on the top and middle sections. I held the pieces together until they were
sufficiently dry and then glued the opposite side which conveniently had a rocket body to act as a match line. Once
these two pieces were glued, it was fairly simple to get the rest lined up right and glued.
The after bulkead is a simple affair that I managed to get wrong the first
time. I cut it out and glued it together with the printed side being convex. It should have been concave. I figued this
out after slipping the motor mount in and looking at the spacing. Fortunately, the curve was gentle enough that I was
able to reverse it.
The legs for the MAGPIE are very simple. You cut them out, fold
them in half and glue. I set mine under a book to dry flat. Once assembled, They are glued to the motor mount along the
preprinted lines. I dabbed the end in glue, pressed it on the motor mount and then immediately removed it. It gave it a
chance to set up a bit and then pressed it on again. The seams were then filleted.
Flight:
Recovery: