Estes B4-4 - 2 Packs of 3 for 6 Engines/Motors with Starters
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Estes
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Estes B4-4 - 2 Packs of 3 for 6 Engines/Motors with Starters
- This bundle provides 6 of the Estes B4-4 model rocket engines - enough for a total of 6 launches!
- Includes the necessary starters and starter plugs (recovery wadding is not included)
- PLEASE NOTE: This item will ship by US Postal Service (USPS) ground transportation only
- You MUST HAVE a physical mailbox or Post Office box for delivery
This bundle provides 6 of the Estes B4-4 model rocket engines - enough for a
total of 6 launches! Includes the necessary starters and starter plugs
(recovery wadding is not included). TThe B4-4 is a standard size (18mm
Diameter) engine designed for flights in rockets weighing less than 3.5
ounces, including the engine. NOTE: Please verify that these engines are
compatible with your model rocket before purchasing. NOTE: THIS ITEM WILL BE
SHIPPED VIA USPS (United States Postal Service). You MUST HAVE a physical
mailbox or Post Office box for delivery. Engine Specifications: Length: 2.8
in. (7 cm) Diameter: 18 mm Estimated Weight: 0.68 oz. (19.3 g)
Frequently Asked Questions
How many launches will this bundle give me?
This bundle includes 6 Estes B4-4 engines, so you'll have enough for 6 launches total.
Will these engines fit my rocket?
The B4-4 uses a standard 18mm diameter engine case and is designed for rockets weighing less than 3.5 ounces (including the engine). Please verify compatibility with your specific rocket model before purchasing.
What's included in this bundle?
You get 6 B4-4 engines, starters, and starter plugs. Recovery wadding is not included and must be purchased separately.
How does this ship and what do I need to receive it?
This ships via USPS ground transportation only. You must have a physical mailbox or Post Office box for delivery—it cannot be delivered to a commercial address or UPS box.
What are the engine dimensions?
The B4-4 is 2.8 inches (7 cm) long with an 18mm diameter and weighs approximately 0.68 oz (19.3 g).
