Hobby Line RMS AeroTech introduced the hobby line RMS in 1991. There are AeroTech RMS motors to fit just about all rocket kits designed for black powder and composite motors. No modification to the rocket is necessary. As is always the case, you should perform a stability and strength check to see that the power and weight of a motor is appropriate for the rocket the motor is to be used in. An investment in RMS give you a position in a wide range of reload kits. Each RMS motor offers flexible power options. Recent releases in this line include the black power 'E'-size RMS-24/60 hardware and F35W reloads, and the G53FJ, G71R and G76G reloads for RMS-29/40-120 hardware.