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United Model B6-4 Engine Pack, Includes 3 Model Rocket Engines

  • Based on 126 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Electronix Express

Arrives Nov 26 – Nov 27
Order within 6 hours and 53 minutes
Available payment plans shown during checkout

Features

  • Includes three B6-4 rocket engines, four model rocket starters, and four starter plugs
  • The B6-4 engine is single stage engine designed for flights in rockets weighing less than 4 ounces, including the engine
  • Each engine measures 2.80" (7cm) long and has a 0.70" (18mm) diameter
  • PLEASE NOTE: This item will ship by US Postal Service only
  • You MUST HAVE a physical mailbox or Post Office box for delivery

Description

Includes three B6-4 rocket engines, four model rocket starters, and four starter plugs. The B6-4 is a medium impulse engine that delivers high altitude flights. It works great for launching larger, heavier rockets, too. Use the B6-4 engines to launch the Generic E2X, Alpha III, Wizard, Viking, Alpha, and other compatible model rockets. xxxPLEASE NOTE: This item will ship by US Postal Service only. You MUST HAVE a physical mailbox or Post Office box for delivery. Engine Specifications: Length: 2.8 0 inch (7cm) Diameter: 0.7 0 inch (18mm) Estimated Weight: .63 oz. (17.9 g) Total Impulse: 5.00 N-sec Time Delay: 4 Seconds Estimated Max Lift Weight: 4.0 oz (113 g) Max Thrust: 12.10 Newtons (2.7 lbs) Thrust Duration: 0.80 Seconds Initial Weight: 0.63 oz (17.8 g)

Brand: United Model


Seasons: All Seasons


Item Weight: 9 Pounds


Size: Medium


Number of Pieces: 3


Brand: United Model


Seasons: All Seasons


Item Weight: 9 Pounds


Size: Medium


Number of Pieces: 3


Style: Box


Item Weight: 9 pounds


Manufacturer recommended age: 16 years and up


Manufacturer: United Model


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Nov 26 – Nov 27

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Propelled forward
Kids liked how they worked well in their rockets
Reviewed in the United States on March 31, 2023 by Miles morris

  • Igniters didn’t work.
Despite following the directions, and making sure the igniters were in the right position, they all failed to work. I was able to get the motors to launch by wrapping the igniter wire around a match head.
Reviewed in the United States on September 2, 2023 by Stuart Feichtinger

  • Defective
One engine is hallow. I want a replacement.
Reviewed in the United States on December 4, 2022 by Amazon Customer Amazon Customer

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