My first was an Enerjet E24, around 1972 or so. Soon after, F52 and F67. Many of the rockets shredded, the progressive thrust curve of those Enerjets was too little thrust at liftoff and too much near burnout. I had my fill of that for awhile, then a few years later the SSRS and Composite Dynamics motors came out, the C.D. E20 was really nice.
Favorite composite not made anymore was the Aerotech F15. Most efficient composite made, albeit costly. And the best G ever made was the G25.
Favorite still existing composite is the Aerotech E6 (expendable and reloadable version), for flying R/C Rocket Boosted Gliders. Hundreds of E6 flights since 1985. Also like the F10 and G12, mostly used for R/C RBG's.
- George Gassaway