Originally Posted by frognbuff

There is no thrust ring. Estes actually tells you to put a 1/4" wide wrap of masking tape around the front of the motor (7-8 wraps) to keep the motor from going up the tube. (Only 1/4" wide because you still put the retainer over the motor to keep it from kicking out at ejection). Old school stuff like we used to do all the time with high powered rockets!