Quest Q-jet

AeroTech G77-4R 29mm x 124mm Single Use 1-Motor Pack - 77704

AeroTech G77-4R 29mm x 124mm Single Use 1-Motor Pack - 77704 - Main image
$30.79 $43.99 In stock

These high performance, composite propellant model rocket motors use the same family of solid propellant as NASA’s Space Shuttle Boosters, military missiles, sounding rockets, and NASA’s future SLS moon rocket. They utilize a patent pending high-strength polymer case and bulkhead, polymer nozzle and RCSs exclusive Redline™ aerospace grade composite propellant formulation, which produces a visible scarlet flame. Redline™ motors burning rate lies midway between that of White Lightning™ and Blue Thunder™. Photos don’t do justice to the “laser-beam” intensity and color of Redline™…. you have to see it to appreciate it!

This AeroTech motor pack comes with 1 rocket motor and 1 FirstFire™ Jr. Initiator.  The sale of this high power motor to persons under 18 years of age is currently prohibited by federal law. Orders containing this item will not be shipped until proof of age (such as a copy of a driver’s license) is received.

Certified by the Tripoli Rocketry Association (TRA), the National Association of Rocketry (NAR) and the Canadian Association of Rocketry (CAR).

  • Specifications:

    Motor Diameter: 1.125 inches (29mm)

    Casing Length: 4.875 inches (124mm)

    Total Impulse: 103 N-sec

    Average Thrust: 80.1 newtons

    Peak Thrust: 100.5 N-sec

    Thrust Duration: 1.28 seconds

    Delay Time: 4 seconds

    Propellant Weight: 59.1 grams

    Motor Weight: 122 grams

    Maximum Liftoff Weight: Due to the variables involved, AeroTech/Quest currently does not list or post recommended maximum lift-off weights for their mid-power and high-power rocket motors. Instead, we recommend utilizing either the RockSim software available at www.apogeerockets.com or OpenRocket Simulator available at www.openrocket.info.

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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.8 / 5 · 4 reviews)

Scarlett ★★★★★

The composite propellant in these G77s really delivers that smooth, sustained thrust you feel in your bones—a noticeable step up from the black powder motors I used before. The 29mm casing fits perfectly in my rocket, and the burn time was spot on for the altitude I needed.

Nicholas ★★★★★

Finally got to launch one of these G77s and the burn time felt just right for my level of flying experience, with a nice long delay before the ejection charge. The composite propellant left a clean, skid-mark trail that was really satisfying to watch go up. Definitely planning to grab another pack f

Miles Y. ★★★★★

Got my G77-4R motors today and the composite propellant really delivers a smooth, steady burn compared to the black powder ones I used before. The 29mm casing fit perfectly in my rocket, and the delay was spot on for a nice high flight.