Catalog Location: Model Rockets - Rocket Engines - E Size

E20-7W 24/70 Single-Use Motor (2) -- E Composite Model Rocket Engine -- #52007

Aerotech E20-7W 24/70 Single-Use Motor (2) -- E Composite Model Rocket Engine -- #52007
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Product Number:ARO52007
Shipping:USA Only
3rd Class Ground
Product Description

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.

Product Features
  • 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.
Product 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
What's Included

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

Requirements & Suggestions
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Product Rankings
#5 in Home > Model Rockets  >  Rocket Engines  >  E Size
#30 in Home > Model Rockets  >  Rocket Engines
#56 in Home > Model Rockets
Most Helpful Reviews - View All - Write a Review
Great for 'Bigger' Estes Scratch Builds
By jamiekitchen June 6, 2013
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 blackpowder. 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!
Was this review helpful to you? 31 of 31 people liked this
Good power, nice flame, nice sound
By duanenorris July 30, 2013
Fired this motor in a custom build scale Patriot missile. Made an awesome launch. Lots of visible flame, nice roar. Rocket flew great to about 1100 ft. Ejection right on time. Even though I prefer the reloadable for the the price, I will probably end up getting more of these. Rocket info: 32in length, 8oz at liftoff, 56mm Diameter.
Was this review helpful to you? 30 of 30 people liked this
aerotech e 20s
By fmgm January 1, 2013
very good motors one thing is strong ejection charge so i needed to get a aeropack retainer but i dont mind love the motor
Was this review helpful to you? 29 of 31 people liked this
Versitile motor
By andrew359 February 16, 2016
We use a ton of these. Way more than any other single size motor. The 4 and 7 second delay both. Although the 7 second delay seems to get used a tad more. White lighting has great sound and flame. Great for anything with a E motor recommendation Puts a black powder motor to shame. Love this in a Estes Big Daddy and my Arreaux (with adapter). Big Daddy looks pretty dang small at apogee. Easier to use than the reloads and about the same price (E size reloads anyway) my calculations you dont save much per reload until you get F and bigger, and these are WAY less hassle...
Was this review helpful to you? 26 of 26 people liked this
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