G64-4W 29/40-120 Reload Motor Kit

This Model Rocket Motor Reload Kit Includes One G-class G64-4W Reloadable Motor Systems for RMS 29/40-120 Motor Hardware, Designed by Aerotech. Federal Law Prohibits the Sale of This Product to Persons Under Age 18. Package contains 1 Aerotech G Size Reloadable Model Rocket Engines.

Aerotech G64-4W 29/40-120 Reload Motor Kit G RMS Model Rocket Engine #76404
 Aerotech # aro76404
Retail $21.99  SAVE 21% !
Aerotech Item # aro76404
Specifications :
  • Motor Diameter: 1.13" (29mm)
  • Assembled Weight: 5.3oz (151g)
  • Maximum Liftoff Weight: 44oz (1247g)
  • Total Impulse: 120 Newtons
  • Aerotech Product Number: 76404
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Spotlight Review

"Fantastic Motor"
Had no problems with these reloads, the delay time was perfect with my 3 Nike Smoke kit I estimate it reached about 2500 feet.

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  • For use in RMS 29mm E, F, G motor.
  • Primary use in single stage rockets.
  • They deliver power at the lowest per flight cost available in hobby rocketry.
  • White Lightning looks and sounds like actual sounding rockets and launch vehicles.
  • White Lightning propellant formulation: a brilliant white flame, dense bright white exhaust, and a throaty roar.
  • Easy to track and exciting to watch!
  • The average thrust of the motor is 14.4 pounds (64 Newtons).
  • Time delay of 4 seconds between propellant burnout and the firing of the ejection charge.
  • Uses the exclusive Copperhead single lead igniter.
  • Ignites by electrical means only.
  • Certified by the National Association of Rocketry.
  • This reload kit includes (1 of each)
  • -Liner (1" O.D. tube)
  • -Propellant Grain (long slotted part)
  • -Grain Adapter (7/8" O.D. tube)
  • -Delay Grain (short solid part)
  • -Delay Spacer (9/16" O.D. Washer or tube)
  • -Delay Insulator (5/8" O.D. tube)
  • -Delay O-Ring (5/8" O.D. x 3/32" thick)
  • -Forward Insulator (1" O.D. washer)
  • -Aft O-Ring (1/16" thick x 1" O.D.).
  • -Forward O-Ring (1/16" thick x 1" O.D.)
  • -Nozzle (black plastic part).
  • -Copperhead Igniter
  • -Ejection Charge Container/Nozzle Cap (Red)
  • Assembly and operation instructions provided.
  • Product warranty policies included.


  • Motor Diameter: 1.13" (29mm)
  • Assembled Weight: 5.3oz (151g)
  • Maximum Liftoff Weight: 44oz (1247g)
  • Total Impulse: 120 Newtons
  • Aerotech Product Number: 76404


One G64-4W Reloadable Motor Systems

Requirements & Suggestions

  • RMS 29/40-120 Motor(s)
  • 12V Launch System
  • Wet Wipes or Damp Paper Towel
  • Hobby Knife (TES50627C) or Scissors
  • How To Build a Model Rocket
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"Lots of bang for your buck!"
Chris B. (Lexington, KY)
This Aerotech propellent reload provides quite a lot of fun for the money. When launched, it provides a bright white flame, a thick columb of white smoke, and a loud roar as it flies. I fly this reload in my Aerotech Mirage and it's always a blast. If you've never used a reloadable motor from Aerotech it's definately worth it. They can be a little time consuming to reload the propellent into the hardware, but you get good at it after doing it a few times and can get to your next flight in just a couple of minutes.

"G64-4 RMA reload"
SteveAwesome (Highlands Ranch, Colorado)
Fantastic reload for the hobby line 20/40-120 case. Great punch and bright white smoke trail. Highly recommended

"good power"
this motor kit could over power your RMS case blowing off the aft closure and nosile and go right threw your rocket CATO cheap case has only 2threads on it .you might think you did somthing wrong probl not


  • This reload kit is only for use in Aerotech's RMS-29/40-120 motor.
  • Read and follow the safety codes of the National Association of Rocketry (NAR) and the Tripoli Rocketry Association and comply with all federal, state and local laws in all activities with hobby rockets.
  • Damaged or defective reloads should be returned to Aerotech.

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