Search query: b4-4 rocket engines

Product: Estes B4-4 Medium Bulk Pack - 4 Packs of 3 for 12 Engines/Motors with Starters
Brand: Generic
Relevance: Exact
This medium bulk pack provides 12 of the Estes B4-4 model engines which is suitable for use in rockets weighing roughly between 1 and 2 ounces which is typical of most rockets being 1 to 2 feet tall. Estes model rocket engines are the standard in the model rocket industry for easy to use and reliable propulsion for your model rockets.
All the engines you need for medium altitude model rocket flights
The best way to get B4-4 engines in bulk
Estes engines are the model rocket industry standard

Product: United Model C6-5 Engine Bulk Pack, Includes 24 Model Rocket Engines
Brand: United Model
Relevance: Substitute
Want to pack some real power? The C6-5 is your engine! This C engine is the highest impulse engine in a bulk pack. This engine will send your rockets out of sight! Estes engine bulk packs are convenient and include everything you need to prepare for 24 rocket launches. Included are 24 rocket engines, 30 model rocket starters, 24 reusable starter plugs and 75 squares of recovery wadding. These C6-5 engines may be used with the rocket bulk packs (Alpha III, Generic E2X, Alpha, Viking and Wizard) or other compatible Estes rockets. Whether you are launching rockets at school with students, at a youth group activity or rocket club monthly launch, Estes engine bulk packs are a must.
Engine Specifications:
Length: 2.8 in. (7.1 cm)
Diameter: .69 in. (18 mm)
Estimated Weight: .85 oz. (24.1 g)
***PLEASE NOTE: This item will ship by US Postal Service only. You MUST HAVE a physical mailbox or Post Office box for delivery.
Includes 24 rocket engines, 30 model rocket starters, 24 reusable starter plugs and 75 squares of recovery wadding
The C6-5 is a standard engine designed for rockets weighing less than 4 oz. and offers more power than both the A3-8 and the B6-4
Each engine measures 2.75" (7.0cm) long and has a 0.69" (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

Product: Estes A8-3, B6-4, C6-5 Mini Bulk Pack - 9 Engines / Motors with Starters
Brand: Estes
Relevance: Substitute
This combo pack provides 3 each of the most popular Estes engines for use in most model rockets. The A8-3 is used for first flights and small flying fields as you get used to how your rocket will perform and where it will land in your flying field. The B6-4's will almost double your altitude. The C6-5's will provide almost double the altitude that the B6-4's can provide. Refer to the instructions or packaging that came with your model rocket for the engines you should be using. Estes model rocket engines are the standard in the model rocket industry for easy to use and reliable propulsion for your model rockets.
All the engines you need for low, medium, and high altitude model rocket flights
The best way to get engines in bulk without having to buy 24 of them.
Estes engines are the model rocket industry standard