© 2008 Stevens AeroModel.
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6.
Magnets are polarized and will attract in one direction but repel in the other. We need to use the attractive force
of the magnets to retain our wing tip. To properly match the polarity of the wing tip magnet to the wing center
section magnets do the following: Locate the two 3/16 in. Neo. Magnets which you will be installing to the wing
center section. Prior to installing these magnets allow them to “snap” themselves to the outside edge of the
magnets you just installed to the wing tip. While the, soon to be installed, wing center section magnet is
clinging to your wing tip magnet; use a permanent marker make a mark on the outside surface of the magnet.
Install this “marked” magnet with the “mark-side” in and the shiny side exposed to the outside surface of the
wing center section. Prior to gluing it would be wise to test the magnet polarity just to be certain you got it right.
You only get one shot at it and the polarity must be right before you commit these parts with glue. Once
satisfied that the polarity is setup for attraction commit the magnets in the wing center section using medium
and thin CA glue.
7.
Test the fit once more, this time using the Delrin tip spar. Now, prior to covering the wing, is the time to make
minor fit adjustments to your anti rotation pin’s and tip spar.
