Estes motors B4-2

When burntime is more important than thrust. A motor for lightweight to medium weight rockets that require a longer thrust duration.

15,95 €
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Pack of 3 Estes type B4-2 engines, diameter 18 mm

When to use this engine

It is a very versatile engine, required by a large number of Estes kits. The thrust duration is slightly longer than other B engines so this engine is a good choice when you want to push relatively light models at high altitudes.

Ficha técnica

70 mm
18 mm
19.8 gr
Total Impulse
5 Ns
Thrust duration
1.1 sec.
2 sec.
Max. liftoff weight
113 gr
Primary use
Single Stage rockets