thrust to weight ratio

  1. F15-8

    Thrust to weight I'm thinking of loc 160 field flyer

    Someone at loc said as long as I have 7:1 thrust to weight ratio Im good. Problem is I'm thinking off using Estes F15-8 motor and the weight for the rocket is13.7oz loaded. Would someone please tell me if that works out to 7:1 thrust to weight ratio?