A3-4 Rocket Motor Value Pack - 12 Motors Wadding & Initiators

A3-4 Rocket Motor Value Pack - 12 Motors Wadding & Initiators

Quest Rockets

  • $36.99
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Value pack of 12 ea. A3-4 Q-Jet model rocket motors. Includes initiators and wadding.

The Q-Jets are the world's most advanced 18mm model rocket motors. They utilize a patent pending high-strength polymer case and bulkhead, ceramic nozzle and RCSs exclusive Black Max aerospace- grade composite propellant formulation, which produces nearly double the specific impulse (or "ISP", a propellant efficiency rating) of conventional black powder propellant. They are not susceptible to thermal cycling like black powder motors. Q-Jets generate a highly-visible exhaust plume and delay smoke trail. All Q-Jets ship with a FirstFire Micro 2-lead initiator, which can be used with any launch controller. All Q-Jet motors are U.S. mailable with no hazmat fee!


  • Motor Diameter: 0.703" (18mm)
  • Casing Length: 2.75" (70mm)
  • Propellant Weight: 2.1 grams
  • Motor Weight: 17.9 grams
  • Maximum Liftoff Weight: 56 grams

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