Aerotech F32-4T 24mm SU Rocket Motor  Maximum liftoff weight is a recommendation that is provided only as a general guideline and should not be at the exclusion of overall considerations of rocket flight stabilty, recovery and safety.  This single-use motor is intended to be used in single-stage rockets powered by a single motor. Did you know? The unique composite fuel used by AeroTech in this single-use motor is up to three times more powerful than Conventional black-powder based hobby rocket motors! Motor Effects: Blue ThunderTM (T) Produces a bright violet-blue flame with a minimum of exhaust smoke. These motors provide a higher level of thrust than White Lightning or Black Jack motors of the same total impulse. Blue Thunder is the perfect propellant for high lift-off acceleration. Primary use.......Single Stage Motor Designation: F32-4T Outer Diameter: .938" (24mm) Length: 3.75" (70mm) Motor Weight: 65 g Propellant Weight: 25.8 g Propellant Type: Blue ThunderTM (T) Total Impulse: 56.9 N-sec Burn Time: 1.66 seconds Delay Time: 4 seconds Maximum Recommended Liftoff Weight: 22 oz/620 g Fits rockets designed for black powder `E` motors