Boyce Flip-Out-Fin Unit for BT-101 Tube spo-disabled it is easy to see

it is easy to see why this kit is named the Estes Rockets Hi-Flier XL Model Rocket

ST-11 and BT-50)

Altimeter weighs

The recovery system features a 24" parachute

78 inches in diameter

Boyce Flip-Out-Fin Unit for BT-101 Tube spo-disabled it is easy to seeOur 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