Reviews

• Ellis Mountain Rocket Works Ellis SU J110 By Dick Stafford

  ( Contributed - by Dick Stafford - 06/06/05) Brief: The Ellis J110-P a 54mm single use motor that provides 751 N-s total impulse (~17% J) with a burn time of 6.8 seconds (Tripoli Motor Testing’s numbers, the photo shows the EM numbers). Construction: This motor is only about 9.5" long, including the plugged aluminum closure. It has a medusa nozzle, but only the center ...