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The Estes 1/2A3-4T engine is a mini, single-stage engine built for lightweight model rockets up to 1.0 ounce. With a total impulse of 1.25 N-sec, a maximum thrust of 8.3 newtons, and a brief 0.3-second thrust duration, it’s designed for quick, reliable flights in smaller models.
Each 1/2A3-4T engine pack includes four engines, four starters, and four starter plugs—providing hobbyists with the essentials for multiple launches. Its compact size and dependable performance make it an ideal choice for hobbyists and educators seeking a reliable mini engine option.
Includes:- 4 1/2A3-4T Engines
- 4 Starters
- 4 Starter Plugs