| HAMR-KS for Kwik-Switch Motor Retainers
We weren’t about to leave our Kwik-Switch users high and dry so we also developed a system just for you! The HAMR-KS (Highly Adaptable Motor Retainers, Kwik-Switch version) system has been designed specifically for use with our rocket kits or any scratch-built rocket using PML Kwik-Switch motor tubes.
The basic HAMR-54 retainer is mounted to the Mother Tube for use with 54mm motors. Two adapter plates are supplied for flying with 38mm or 29mm motors. Changing from one motor size to another takes just seconds with no tools required!
See our Motor Mounts Page for more information about our Kwik-Switch motor mount system.
These lightweight, tool-free, threaded retainers and adapters are precision CNC turned from 6061 aluminum and anodized. The photo on the right shows the basic 54mm retainer and adapter plates for 38mm and 29mm motors. These retainers fit virtually all popular motor brands and types including Aerotech RMS (TM), CTI Pro XX (TM), Animal Motor Works (TM), Hypertech (TM), Kosdon (TM), and others.
The HAMR system can be adapted to existing rockets if the motor tube extends at least 3/8” beyond the aft centering ring.
The HAMR can also be used with boattail and tailcone rockets.
Following are the outer diameters of the HAMR threaded retainer rings. Regular and KS retainer rings are identical in size.
- 29mm 1.52" OD
- 38mm 1.93" OD
- 54mm 2.59" OD
Click here for photographic examples of using the HAMR-KS adapters with the Kwik-Switch.
Click here for the complete instruction sheet including retro-fit notes and ideas. (720k)
NEW! HAMR Adapters 54/38, 54/29, 38/29
Adapters for HAMR Retainers! If you`re using a HAMR retainer on your rocket and want to fly a smaller diameter motor, here`s your solution! The HAMR Adapters are specifically designed to work with our HAMR system, and are available in 54/38, 54/29 and 38/29 versions.