In Stock

B4-4 Engines



3 – B4-4 Engines
4 – Starters
4 – Starter Plugs

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

In stock

SKU: 001602 Categories: , ,

The Estes B4-4 engine is single stage engine designed for model rocket flight. This engine is a standard engine designed for flights in rockets weighing less than 3.5 ounces, including the engine. Each package includes 3 engines, 4 starters and 4 plugs.


2.8 in. (7 cm)


18 mm

Estimated Weight

.68 oz. (19.3 g)

Total Impulse

5.00 N-sec

Time Delay

4 Seconds

Estimated Max Lift Weight

3.5 oz (99 g)

Max Thrust

13.20 Newtons (3.0 lbs)

Thrust Duration

1.10 Seconds

Initial Weight

0.68 oz (19.2 g)

Propellant Weight

0.27 oz (7.6 g)

Quantity Per Pack


5 reviews for B4-4 Engines

There are no reviews yet.

Be the first to review “B4-4 Engines”

Your email address will not be published.