Twin 54mm Stealth Drag Race at METRA Rocket Club's Pine Island, NY launch site. My wife flew her Stealth with an Aerotech K185 White Lightning and I used Aerotech's J135 White Lightning motor. The 'K' did not ignite immediately but caught up to the J powered Stealth in short order. Both motors burn for approximately 8 seconds. This is a fun-to-fly and easy-to-prep odd-roc from Applewhite Rockets. http://directorzone.cyberlink.com/video/11957179