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Comment: Hauling out my ancient geometry skills to find the center of a circle, for custom-made centering rings.
Aft Centering Ring * Aft MMT centering ring, showing engine retaining hardware (a blind nut with a couple of pieces of balsa as an anchor; these will be glued together and assembled behind the ring). A pair of blind nuts will be coupled with two window screen retainers to make my version of a Kaplow Clip. * 2364 x 1286 * (842KB)
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Circle Construction.jpg - 2560 x 1920 - (1.05MB)
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4/22/10 8:32 PM
Nose Bridle * The nose cone's shock cord bridle assembly, to be installed in a tubing coupler. The shock cord retention bridle and the center ring-bulkhead strengthening gussets. * 1715 x 2143 * (738KB)

Nose Bulkhead * It doesn't look like a bulkhead, but it becomes one. The shock cord will attach to the loop in the bridle. * 1671 x 1832 * (633KB)

Bridle Detail * Detail of the shock cord bridle, behind the bulkhead. * 2073 x 1510 * (680KB)

Nose Bulkhead Installation * The nose shock cord bridle and bulkhead assembly installed in the tubing coupler. This will go in the aft end of a short body tube; the nose cone will be attached to the forward end. * 1613 x 1840 * (690KB)

MMT Detail * Motor mount, showing the centering ring, blind nut, and strengthening guessets. * 1775 x 1519 * (565KB)
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