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Reloadable Motor System 24/40

This Model Rocket Motor Reload Kit Contains One Reloadable Motor System (RMS) 24/40 Motor Hardware Designed by Aerotech. Federal Law Prohibits the Sale of This Product to Persons Under Age 18.

Aerotech Reloadable Motor System 24/40
 Aerotech # aro91241
Retail $49.99  SAVE 7% !
Aerotech Item # aro91241
Specifications :
  • Motor Diameter: 0.94" (24mm)
  • Motor Length: 2.75" (70mm)
  • Assembled Weight: 1.6oz - 2.4oz (45g - 67g)
  • Aerotech Product Number: 91241
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Spotlight Review

"Send your Estes rocket into the Stratosphere!"
skydog (Arizona)
Want your rocket to fly higher and faster than the designer intended? Want to save money at the same time? Want to get more involved in the prepping of your rocket so you can be even happier when your hard work pays off and you have a perfect flight?? Sure you do! Rocketry is all about adventure and learning- Doing something that might be a little difficult and doing it well. Get an F reload into this case, cram it up the tailpipe of that lightweight Estes D kit, and watch it really perform! Just make sure you at least have an idea of the correct delay- Obviously it should be longer than you would use with a D motor. If your rocket flies well on a D12-5, for instance, DON'T put an F24-4 in it. Work your way up from what you know... Ds, then Es, then Fs, and keep notes. And read and follow instructions exactly until you know what you're doing.

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  • For use with RMS 24mm D, E, F reloads.
  • The RMS 24/40 motor hardware can be used with Aerotech's D9, D15, E11, E18, E28, F12, F24, and F39 rocket motor reloads kits.
  • Primary use in single stage rockets.
  • They deliver power at the lowest per flight cost available in hobby rocketry.
  • RMS motors produce far less non-biodegradable waste than single-use motors.
  • Reflects the same reliablity, quality, and professional design.
  • Assembly and operation instructions provided.
  • Product warranty policies included.


  • Motor Diameter: 0.94" (24mm)
  • Motor Length: 2.75" (70mm)
  • Assembled Weight: 1.6oz - 2.4oz (45g - 67g)
  • Aerotech Product Number: 91241


  • 24mm Aft Closure
  • 24mm Case
  • 24mm Forward Closure
  • Grease

Requirements & Suggestions

  • Motor Reload Kit (Refer to FEATURES)
  • How To Build a Model Rocket
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Write a Review  View All Reviews
"Solid piece of hardware"
Small, but essentially a carbon copy of the larger versions of the RMS system. I now have two, and have had no failures in many many cycles. Only downside is need for cleaning. Use a good grease, clean them as soon as possible after using, and they should last a very long time. Many suggestions out there on cleaning, I prefer to soak a bit in white vinegar, then wipe down with paper towels and Q-tips. Baby wipes will do the job if you need to do a quick turn on the field.

"Good investment"
Great motor case that can save you a few bucks on the F reloads in hazmat fees, and I love the E18 and E28 loads for this case. This is my primary E/F casing, with the 29 40-120 being almost exclusively used for G motors or maybe the F52 if I don't want a heavier model to go too high due to wind etc.

"Great way to add power to those Estes kits"
This set allows you to use F motors in those 24mm estes kits I've used it for three launches now, and it was very fun watching the small Estes kits scream off the pad on an F motor instead of a D or E.


  • This reload kit is intended to be used only with AeroTech Reloadable Motor System Kits.
  • Read and follow the safety codes of the National Association of Rocketry (NAR) and the Tripoli Rocketry Association and comply with all federal, state and local laws in all activities with hobby rockets.
  • Damaged or defective reloads should be returned to Aerotech.

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