AeroTech E20-4W Model Rocket Motors

The AeroTech E20-4W composite propellant model rocket motors provide over twice the power of the D12 and 1.3 times the power of the Estes E9 model rocket engine! That's not all, you also get a brilliant white smoke exhaust with impressive sound on each flight! These powerhouse engines fit all flying model rockets built for the Estes D12 and E9. The E20-4W is the correct delay time to be used in place of a D12-3, E9-4, E12-4 or an E16-4.

AeroTech composite propellant rocket motors are the most powerful and technically advanced model rocket motors in the world. AeroTech motors use the same type of propellant found in the Shuttle and military rockets. Pound for pound, this propellant can deliver over 3 times the power of black powder used in other model rocket engines. AeroTech composite model rocket motors allow you to fly larger rockets, heavier payloads, and achieve higher altitudes than ever before!

E20-4W Engine Specifications:

• Type: Single Stage
• Length: 2.75"
• Diameter: 0.938" (24 mm)
• Total Impulse: 36 N-sec
• Delay Time: 4 seconds
• Max. Lift Weight: 16.0 oz
• Propellant Weight: 0.57 oz
• Total Motor Weight: 1.76 oz

Includes:  2 - rocket motors, 2 - FirstFire Jr initiators and instructions.

Note:  Recommended for ages 16 years and up. Adult supervision is recommended for those under 16 years of age. Must be at least 18 years of age to purchase in California or New Jersey, 16 in Rhode Island and 14 in North Dakota.