Engines B4-4 (3 Pack)

$14.99

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Article number: EST 1602
Availability: In stock
Delivery time: In-Stock Orders typically ship with in 1 -2 business days.
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B4-4 (3 Pack) Estes Rocket Engines

ENGINES FOR MODEL ROCKETS

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

Length

2.8 in. (7 cm)

Diameter

.7 in. (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

3

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

PLEASE ALSO NOTE:

Model rocketry is a legally permitted activity in every state in the U.S. However, four states have laws and regulations that specify certain age or permit requirements.

 

CALIFORNIA

In California one must be at least 14 years of age to purchase model rocket engines through size “D” and must be 18 years of age to purchase larger model rocket engines. Children as young as 12 years of age may receive and use model rocket engines under adult supervision while participating in a bona fide educational program. Permission of the landowner or local fire marshal may be required before launching. Many areas have pre-approved launch sites and times. It is also important to remember that a small number of counties and municipalities in California have ordinances that are more restrictive than state laws and regulations. Due to the sheer volume we are unable to track local ordinances.

 

NEW JERSEY

In New Jersey one must be at least 14 years of age to purchase model rocket engines through size “C” and must be 18 years of age to purchase larger model rocket engines. Children as young as 12 years of age may launch model rocket engines under adult supervision while participating in a bona fide educational program.

 

RHODE ISLAND

In Rhode Island one must be at least 16 years of age to purchase and use model rocket engines through size F.

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