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Spektrum™ AirWare™ programming for easy programming out of the box
Large diameter disc brake
it’s still worth adding your own booster
Capacity: 1000 mAh
a different timing advance is required for optimal efficiency
1/2A3-4T Engine Educator PkHAZ (24) - EST1788 PRO348217 Spektrum™ AirWare™ programming for easyOverview Estes offers rocket engine bulk packs in four total impulse ranges. These packs may be used with the rockets listed on our Web Site or other Estes rockets. The description of each kit lists recommended engines. Our engine bulk packs contain: 1) 24 rocket engines 2) 30 model rocket igniters 3) 24 reusable igniter plugs 4) 75 4. 5 in. (11. 4 cm) squares of recovery wadding, enough for approximately 25 launches.