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Scheduled Research Launch Attendance
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The Official Magazine of Tripoli Rocketry Association
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Determining Grain Length on a Mandrel: 38mm- Subtract 0.2” + 1 grain length. 54mm-76mm - Subtract 0.3” + 1 grain length. 98mm- Subtract 0.40” + 1 grain length.
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7/16” - 7/8” Mandrels are 11” long. 1” - 1-1/2” Mandrels are 14” long.
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152mm Top Aligning Caps are machined to fit your existing mandrel. When ordering, request mandrel size in comments section. Center holes will be made .005”-.007” oversize. Base caps can ordered w/5/16” or 3/8” mounting hole.
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3” Rubber Square Base w/screw
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$3.00
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4” Rubber Square Base w/screw
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TRU-CORE All rights reserved 2009-10
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