My Estes Cosmic Interceptor flying on a Cesaroni E22 Smoky Sam with a 4 second delay at the FlisKits 10th Anniversary launch at the CMASS field in Amesbury, MA on 10/20/2012. This was the kits second flight. The first flight was on an Estes E9-4, which I would strongly suggest not using as there seemed to be inadequate thrust for the weight of the rocket.