Estes Standard Rocket Engine E9-4 $52.90
Estes Standard Rocket Engine E9-4
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The Estes E9-4 engine is single stage rocket engine. This engine is a standard engine designed for flights in rockets weighing less than 340g including the engine. Each package includes 3 engines, 3 igniters and 4 igniter plugs.

How does a model rocket engine work?

  • When the engine is ignited, it produces thrust and boosts the rocket into the sky:

  • After the propellant is used up, a delay is activated, producing tracking smoke and allowing the rocket to coast:

  • After the delay is burnt, the ejection charge activates, deploying the recovers system:

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