When your rocket needs a fast, steady boost and an earlier recovery, the Estes C5-3 engine delivers. With a total impulse of 10.00 N-sec and a thrust duration of 1.85 seconds, this 18 mm engine is engineered to provide a longer, sustained push off the launch pad, making it a strong match for mid-weight rockets and high-drag designs.
The 3
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The solid Rockets are always excellent
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Anonymous · September 22, 2026
I have been buying from Estes since i was 11 years old back in 1967 . Service and quality are always great. Working now to get my grandkids into rocketry . Estes will be a part of that.
C
Customer · July 11, 2026
Great Motors!
These motors work well for slightly heavier models.