1/4A3-3T Mini Engine - 1502

Availability: In stock

PLEASE NOTE: This item will ship by US Postal Service Parcel Post only. You MUST HAVE a physical mailbox or post office box for delivery.

The Estes 1/4A3-3T engine is single stage engine designed for model rocket flight. This engine is a mini engine designed for flights in lightweight rockets. Each package includes 4 engines, 4 starters and 4 starter plugs.

Additional Information


1.75 in. (4.4 cm)


.50 in. (13 mm)

Estimated Weight

.21 oz. (6 g)

Total Impulse

0.625 N-sec

Time Delay

3 Seconds

Estimated Max Lift Weight

1.0 oz (28 g)

Max Thrust

4.90 Newtons (1.1 lbs)

Thrust Duration

0.25 Seconds

Initial Weight

0.21 oz (5.9 g)

Propellant Weight

0.05 oz (1.3 g)

Quantity Per Pack


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