$10.79
ENGINES FOR MODEL ROCKETS
3 – B4-2 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
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.
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WARNING
| Length | 2.8 in. (7 cm) |
|---|---|
| Diameter | .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 | 3 |
Noah –
great
great first engine
Jeff –
Great Engine!
Love these engines! Works perfectly every time and is always reliable! Thanks Estes!
Nels –
Perfect
Everything worked perfect, would recommend!