Estes Rockets
Engine Adapters Standard to D
Engine Adapters Standard to D
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Two simple steps transform a standard engine into a D size. Insert a standard engine into the adapter, and insert the adapter into a rocket. 3 adapters per pack. Reusable.
Adapts D engine mounts to hold a standard engine.
NOTE: This motor adapter has been tested in products that use ESTES metal engine hooks. It may not work with other brands of engine hooks.
Rockets weighing up to 4 ounces that would normally fly on C11 or D12 engines can be flown on B and C engines.
Live, Online Training and 1:1 Support!
Estes Education has been a leader in STEM education for over 60 years. We know that STEM is a vital interdisciplinary topic that requires hands-on and inclusive learning. Explore these supporting materials to take learning to new heights!
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Learn About Model Rocket Safety!
Not sure how to safely launch a rocket with your group? Head over to our dedicated Safety instructions page for videos, support, and more!