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Ships within 48 hours · Estimated delivery Aug 3 - Aug 8
Altimeter weighs
78 inches in diameter
Our Honest John Fin Upgrade allows you to get rid of those wimpy vacuformed fins and replace them with these high-quality direct glue on replacements
375 imches
Boyce Flip-Out-Fin Unit for BT-101 Tube spo-disabled Altimeter weighsOur new Flip Out Fin Unit is used for creating two stage BT 101 models that don't have second stage fins. This is a perfect upgrade for making a two stage version of the Estes 1: 100 scale Saturn V. Our Flip Out Fin Unit is designed for use on scale or experimental rockets that have a BT 101 as a main body tube and that will use a single 24mm second stage motor. The unit is basically a glue in tube coupler that has 4 flip out fins that automatically
