Hold Those Expensive Reload Cases Secure In Your Rocket
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AeroPack Engine Retainers
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Product Specifications:
The set includes two pieces. One part is epoxied to the engine mount tube, and the other piece simply screws over the top after the rocket motor is inserted into the rocket. Made from aircraft-grade aluminum, and anodized a black color.
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Retainer Order Chart
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Fits 29mm tubes with an O.D. of 1.215 inches, such as paper tubes from Apogee, Aerotech and Madcow Rocketry
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29mm
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24064
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Fits 29mm tubes with an O.D. of 1.225 inches, such as paper tubes from LOC and Madcow Rocketry's Fiberglass tubes
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15.9 g
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RA29L2
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$27.00
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Fits 29mm tubes with an O.D. of 1.270 inches, such as Blue Tube*, and phenolic tubes from PML and Giant Leap. Also fits fiberglass tubes from Performance Rocketry and Hawk Mountain.
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Fits 38mm tubes with an O.D. of 1.630 inches, such as paper tubes from LOC.
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Fits 38mm tubes with an O.D. of 1.650 inches, such as Madcow kits, Blue Tube*, and phenolic tubes from PML and Giant Leap. Also fits fiberglass tubes from Performance Rocketry and Hawk Mountain
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Other sizes are available, but require a special order. Please call us at 719-535-9335.
*Some sanding will be required to make a good fit on the Blue Tubes.
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Features of the Aero Pack Motor Retainers
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Do you think engine hooks or tape look ugly to hold the rocket motor in your model? Then you'll love the Aero Pack motor retainers. It gives your rocket a professional and finished look that a high quality rocket deserves.
What does it do? Simply, it also holds the engine in the rocket so it can't be spit out by a strong ejection charge. A secondary feature is that it allows you to quickly swap out the used-up motor for a new one in seconds. It is as simple as screwing off a bottle-top. Just twist off the cap, swap out the motor, and twist the cap back on to hold the engine in place.
How do you install it? Installation is very simple. Just bond the threaded portion to the aft end of the engine mount tube using some good high-temperature epoxy such as JB Weld. The cap portion is twisted on after the motor is placed in the vehicle.
Features Include:
- Two-piece, light-weight assemblies fits all standard reloadable and single use motors
- Precision machined 6061-T6 aluminum with mil-spec type II black anodizing for wear and corrosion resisitance
- Large Quick-Turn Threads for Fast Tool-Free Motor Change
- Compatible with the following solid fuel rocket motors: AeroTech™ / AMW™ / APS™ / Cesaroni ProX™ / Kosdon™ / Loki™
- Can Be Added to Existing Rockets with Extended Motor Mount Tubes
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Materials needed to assemble the engine retainer:
- High temperature epoxy, such as JB Weld brand.
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Alternate Methods To Restrain Rocket Motors
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The old method of restraining motors using a metal plate that screws into the base of the rocket is another option. We carry these under the Madcow Rocketry Engine Retainers.
The advantage is that they can be installed on rockets that are already constructed, or they can be used on rockets where the engine tube is flush with the centering ring (making a flat-bottomed rocket that will stand up on a display shelf). They also cost a bit less than the AeroPack retainers shown on this page. Click here for more information.
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Video: How To Restrain Rocket Motors
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How To Restrain Rocket Engines
In this free YouTube video, we'll answer the most common questions that people ask us about restraining the motor in the rocket. You'll see how to tape the motor in, as well as using engine mount retainers shown on this page.
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Frequently Asked Questions about the Aero Pack Engine Retainers:
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Q. Do they work with single use motors too?
- A. Yes they do!
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Other Items that people who bought the Retainers have found useful:
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High Power Nose Cones
These are high power nose cones that fit both the LOC kraft-paper tubes, as well as these Blue Tubes. The tubes are made out of Polyproplyene plastic, which makes them very durable so they'll take the abuse of any high power motor you care to put behind them.
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Tube Couplers For Large Diameter Rockets
These regular Kraft-paper couplers fit the same tubes as the Blue Tube Couplers. So if we're out of a size of the Blue Coupler you need, this could be an alternative you may want to consider.
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Large Diameter Paper Airframe Tubes
These tubes from LOC Precision are perfect if you are just getting started in high power rocketry and are on a budget. Made from paper, they are easy to cut, sand, glue, and paint. They will allow you to experiment with your own designs and construction techniques without putting you in debt.
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Blue Tubes - While they cost a bit more than the paper tubes listed on this page, Blue Tube is durable alternative to those phenolic and carbon-fiber tubes. Used by the military in tank ammunition, this material is abrasive resistant and will not crack. They are great for high power rockets where you need super durability.
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Blue Couplers - To go along with the Blue Tubes, here are the couplers that can join them together to make longer rockets. These will also fit the standard size LOC tubes, and those other high power manufacturers that make the tubes to standard sizes.
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Fiberglass Body Tubes - Quite a bit stronger than paper or the Blue Tube. And it is also the easiest to finish and paint because it has such a hard and smooth surface.
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Electronics Bays
These payload bays from Always Ready Rocketry fit most of the standard size Blue Tube, as well as tubes from LOC Precision. They are designed to hold the avionics or electronics that control the deployment of the parachutes in the rockets. It is a complete kit, all you have to do is supply the electronic payload to controll when the ejection charges fire.
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Motor Mount Adapters - These adapters allow you to put a 29mm diameter motor into a rocket that has a 38mm motor mount tube. This is a great way to save money by putting a smaller motor in a big rocket.
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Rail Buttons
Rail Buttons are used in place of launch lugs on larger rockets. The reason is that big rockets need a stiffer launcher so they don't sway around in breezy conditions. A launch rail is much stiffer than a circular rod, and therefore are used on big rockets so they launch safely and higher into the sky.
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High-Power Capable Parachutes
SkyAngle parachutes were designed and constructed specifically to handle the extra stress of high power rockets. Because of the extra weight of the bigger rockets, they have more than their share of parachute malfunctions. The SkyAngle parachutes are more durable, and bring your big rockets down slower.
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Sky Angle Parachute Deployment Bags
A deployment bag is a device to help ensure that parachute inflates properly and in the correct order. It forces the lines to completely stretch out first, and then the canopy is released so that it can properly inflate. It also minimizes the loads on the suspension lines to prevent tears, and it gives additional protection from the heat of the ejection charges. If you're doing high power rockets, you really need this extra insurance to make your project a success.
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Modern High Power Rocketry 2
The most extensive book ever written about "how to build LARGE high power rockets." Recommended for all modelers getting ready to take a jump to those bigger and more powerful rocket engines. It takes you step-by-step in the process of how to prepare for Level 1, Level 2, or Level 3 high power certification.
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Spring steel engine retainer clips
Used on small rockets, these engine hooks to allow you to swap out engines between flights in just milli-seconds. It is really that fast!
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"Again, I can't tell you how much I appreciate your very professional organization...customer service is absolutely top notch."
-- Susan S. Martin
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Shipping and Handling Fees:
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To estimate the shipping charges, please see our shipping information page. This page also explains how items are shipped, as well as offering you additional shipping options.
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