B4-2 Standard Engine - 1601

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 B4-2 engine is single stage engine designed for model rocket flight. This engine is a standard engine designed for flights in rockets weighing less than 4 ounces, including the engine. Each package includes 3 engines, 4 starters and 4 plugs.

Additional Information


2.8 in. (7 cm)


.7 in. (18 mm)

Estimated Weight

.66 oz. (18.7 g)

Total Impulse

5.00 N-sec

Time Delay

2 Seconds

Estimated Max Lift Weight

4.0 oz (113 g)

Max Thrust

13.20 Newtons (3.0 lbs)

Thrust Duration

1.10 Seconds

Initial Weight

0.66 oz (18.6 g)

Propellant Weight

0.27 oz (7.6 g)

Quantity Per Pack


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