Estes C11-7 Rocket Motors Pack 2 – Bulk Pack of 72

The Estes C11-7 is a 24 mm single stage model rocket engine with a 7-second delay, designed for model rocket flight and rockets with a maximum lift weight of 4.0 oz (113 g). This D-ES1524 listing is supplied as a Bulk Pack of 72 and is ideal for clubs, schools and group launch events. Each item within the bulk supply is the standard Pack 2 format for the C11-7.

Delivering a total impulse of 10.00 N-sec, the C11-7 provides a strong, controlled boost with a peak thrust of 22.10 N and a burn time of approximately 0.80 seconds. The 7-second delay allows for a suitable coast phase before ejection, helping to deploy recovery systems at the right moment (subject to rocket design and conditions).

What’s Included Per Pack

• 2 x C11-7 rocket engines
• 2 x starters
• 4 x starter plugs

Key Specifications

• Diameter: 24 mm
• Length: 2.75 in (7 cm)
• Total impulse: 10.00 N-sec
• Time delay: 7 seconds
• Max thrust: 22.10 N (4.9 lb)
• Thrust duration: 0.80 seconds
• Initial weight: 1.19 oz (33.8 g)
• Propellant weight: 0.44 oz (12.4 g)
• Estimated max lift weight: 4.0 oz (113 g)
• Quantity per pack: 2

Suggested Compatibility

• Rockets with 24 mm motor mounts
• Single-stage airframes designed for 7-second delay motors
• Models at or under 4.0 oz (113 g) lift-off weight