A10-3T Model Rocket Engines (4)

This is an A-class A10-3T mini model rocket engine from Estes. For use in single stage model rockets.

Estes A10-3T Model Rocket Engines (4) Mini Rocket Motor #1511
 Estes Rockets # est1511
Retail $11.29  SAVE 20% !
Estes Rockets Item # est1511
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Spotlight Review

"big punch in such a tiny package"
SteveAwesome (Highlands Ranch, Colorado)
all my micro rockets get these loads - they jump off the launch pad so fast its amazing. don't blink - these little guys are fun and quick - highly recommended for any rocket requiring this size engine.

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  • Length: 1 3/4"
  • Diameter: 1/2"
  • Estes Product Number: 1511


  • 4 A10-3T Model Rocket Engines
  • 4 Igniters
  • 4 Plugs

Requirements & Suggestions

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"Strong Motor. Likes to CATO."
I have used these motors extensively when launching in smaller fields. These motors can lift a 3 oz rocket with authority, but they keep the apogee lower so you recover your rocket in small areas! I fly BT-50 size rockets which are great because you can actually fit wadding, streamers and 'chutes inside the airframe, unlike the BT-20 size and ESPECIALLY the BT-5 size tubes. Use a motor adapter to fit these mini motors into a BT-20 or BT-50 airframe tube. WARNING: Because of the high output of these motors, I have about a 1 in 10 fail rate, i.e. the motor over-pressurizes (CATOs) when rocket is several feet off the pad. (Remember the old B-14 motors? Same problem here). Build your rocket strong if you will be using these motors. For rockets 2 oz. in weight or less, I recommend the A3-4T which does not suffer from the CATO problems of the A10-3T.

For the mini-engine crowd. These will lift your 1 ounce or less rockets out of sight. Streamer recovery suggested...

"Strong for a mini motor"
These really get your smaller rockets off the pad FAST. We shot a sky duster up like a lighting bolt. it was very cool. The are strong enough for use in a 18mm airframe with an adapter, particularly if the model is small and or your field is


  • WARNING: Model rocket motors are flammable. Please use caution.
  • Must be 14 to purchase in CA and NJ.
  • Do not burn engines.
  • Soak in water to destroy.

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