These are the Aerotech Consumer Aerospace Econojet F20-7W, 29mm, single use motors.
FEATURES: Composite Model Rocket Motors
Econojet motor series
Single Stage
The unique composite fuel used by Aerotech in this single-use motor motor is up to three times more powerful than conventional black-powder based hobby rocket motors.
White Lightning Propellant- A brilliant white flame, dense bright white exhaust and a throaty roar are the hallmarks of this popular propellant. Easy to track. Exciting to watch! White Lightning looks and sounds like actual sounding rockets and launch vehicles. Special effects professionals and aerospace companies specify the Aerotech White Lightning propellant to achieve realistic simulation.
INCLUDES: Two F25-7W Single Stage Motor
Two COPPERHEAD Igniter
One instruction sheet
REQUIRES: Recommended for Mustang, Arreaux, IQSY Tomahawk, Cheetah and Barracude rockets
SPECS: Impulse energy- F
Average thrust in Newtons- 20N ( 4.5 lbs)
Delay in seconds between propellant burn-out and activiation of the ejection charge- 7 seconds
Propellant type- White Lightning
For use in- 29mm Composite Motor Rockets
Primary use- Single Stage
Motor diameter- 1.13" 29 mm
Assembled weight- 2.8 oz. 80 g
Maximium liftoff weight- 16.0 oz. 454 g