E20-7W 24/70 Single-Use Motor (2)

This is the E20-7W 24mm x 70mm Ammonium Perchlorate Composite Propellant Model Rocket Motor from AeroTech Consumer Aerospace. Package contains 2 AeroTech E Engines.

Aerotech E20-7W 24/70 Single-Use Motor (2) E Composite Model Rocket Engine #52007
 Aerotech # aro52007
Retail $26.99  SAVE 21% !
Aerotech Item # aro52007
Specifications :
  • Propellant type- White Lightning
  • Outer diameter: .938" (24mm)
  • Length: 2.75" (70mm)
  • Motor weight- 1.76 oz. (50g)
  • Propellant weight - .57oz. (16.2g)
  • Aerotech Product Number: 52007
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Spotlight Review

"Great for 'Bigger' Estes Scratch Builds"
As stated in the title, the burn rate and total impulse of these motors are great for launching scratch built rockets using Estes type BT60 and 70 body tubes. The thrust is low enough to not over stress the lightweight components but high enough to get the altitude despite the relatively large diameters of these tubes. I made a larger scratch version of the Big Bertha using BT70 tubing and this motor is perfect for this design. Like any composite motor, care must be taken when inserting the igniter as igniting composite is not as easy as black powder. If you are in a situation where you are trying to balance the demands of other members or your kids and cannot take the time to make absolutely sure you inserted the igniter right and put a little bend in it etc. stick with black powder or make sure everyone leaves you alone until you are satisfied you have done it right. The reward will be lots of smoke and flame out the back of the rocket, not your ears. As i said, lots of white smoke and good acceleration off of the pad gets everybody's attention. A great way to hook onlookers into joining your club!

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  • White Propellant- A brilliant white flame, dense bright whit exhaust and a throaty roar are the hallmarks of this popula popular propellant.
  • Looks and sounds like actual sounding rockets and launch vehicles.
  • Instruction sheet included.


  • Propellant type- White Lightning
  • Outer diameter: .938" (24mm)
  • Length: 2.75" (70mm)
  • Motor weight- 1.76 oz. (50g)
  • Propellant weight - .57oz. (16.2g)
  • Aerotech Product Number: 52007


Two E20-7W 24mm x 70mm Single Use Composite Model Rocket Motor

Requirements & Suggestions

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"aerotech e 20s"
very good motors one thing is strong ejection charge so i needed to get a aeropack retainer but i don't mind love the motor

"great little motor"
put one in an estes liberty. quick ignition and good thrust for the rocket.

"The better E alternative"
The pluses: These are higher thrust, higher impulse, smaller, and lower weight than the Black Powder E's from the other motor maker. The minus: They do cost a little more, but in this case you get what you pay for. On the other hand, I've never had one of these blow through, and I can't say that for the Black powder E's. ;-)

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