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.

Mr. Northport (Northport, WA)
Not the most powerful small motor out there, but for the price of these you really can't go wrong especially if you're working with little kids.

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


  • 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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