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.
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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.
Data sheet
- Length
- 70 mm
- Diameter
- 18 mm
- Weight
- 19.8 gr
- Class
- B
- Total Impulse
- 5 Ns
- Burntime
- 1.1 s
- Delay
- 2 s
- Max. liftoff weight
- 113 gr
- Primary use
- Single Stage rockets
When burntime is more important than thrust. A motor for lightweight to medium weight rockets that require a longer thrust duration.