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 > Model Rockets > Rocket Engines > G Size : Aerotech G40-7W White Lightning Motor aro74007

G40-7W White Lightning Motor

This is a G-class G40-7W (White Lightning) Single-Use Composite Model Rocket Motor from Aerotech.

Aerotech G40-7W White Lightning Motor G Composite Model Rocket Engine #74007
 Aerotech # aro74007
Retail $15.95  SAVE 21% !
Aerotech Item # aro74007
Specifications :
  • Motor Type: G40-7W
  • Primary Use: Single Stage
  • Motor Diameter: 1.13" (29mm)
  • Motor Weight: 4.4 oz (125 grams)
  • Max. Liftoff Weight: 24 oz (680 grams)
  • Aerotech Product Number: 74007
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Spotlight Review

"Great motor nice slow burn!!"
rbeard2 (Dayton, OH)
Another cool engine from Aerotech. The G40 burns for about 2.5 seconds and is a great choice for rockets that have been upgraded from 24mm motors to 29mm motors. This is because with the higher initial impulse motors (like the G80) the thrust spike may be too much for the structure of the upgraded rocket. This G40 combined with a First Fire Jr. ignitor is THE hot combo for upgraded mid-power rockets!

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  • Single-use G motor intended to be used in single-stage rockets powered by a single motor.
  • Unique composite fuel is up to three times more powerful than conventional black-powder based hobby rocket motors.
  • 5-1/4" model rocket motor comes with a 5-1/2" copperhead igniter.
  • Very technically advanced. Uses the same propellant as America's space boosters.
  • Detailed instructions for ignition and launching.


  • Motor Type: G40-7W
  • Primary Use: Single Stage
  • Motor Diameter: 1.13" (29mm)
  • Motor Weight: 4.4 oz (125 grams)
  • Max. Liftoff Weight: 24 oz (680 grams)
  • Aerotech Product Number: 74007


One G40-7W Single-Use Composite Model Rocket Motor

Requirements & Suggestions

  • Inserting the Copperhead Igniter
  • Hobby Knife (tes50627c)
  • Single Stage Rocket
  • Aerotech Interlock Igniter Clip
  • Masking Tape (for certain rockets - see COMMENTS)
  • Launch Pad with a Launch Rod or Rail at Least 36" Long or 2/3 the Combined Length of the Rocket Body and Nose Cone
  • Launch Controller Power Supply: Fully Charged Car Battery or 12 Volt Gel-Cell Recommended
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Write a Review  View All Reviews
"Great all around motor"
One of my favorite single use motors. Good visual flame, and not so much punch that the rocket is gone too fast to enjoy it. Also, a good long 2+ second burn time. Perfect motor for 1-2 lb rockets.


  • ATTENTION: the sale of G motors to persons under 18 years of age is prohibited by federal law.
  • Product is flammable. Keep out of reach of children.
  • Masking tape is required for rockets with a motor mount that does not have a motor hook or motor block or has a motor block deeper than the motor length.
  • Each Aerotech Composite Rocket Motor is stamped with a code which gives important information about the motor's performance. The letter indicates the total impulse (in Newton-seconds) produced by the motor.
  • Store in a dry place where the temperature will remain between 45 degrees (F) and 100 degrees (F).
  • Use Aerotech composite model rocket motors only in model rockets designed and built for them.
  • See safety code procedures within instructions.

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