Motor Retainers

Retainers
Motor retainers used in place of engine clip to secure motors in place by pressing motor's thrust ring between the retainer body and the cap. Having a retainer instead of a clip and thrust ring allows use of motors of different lengths. For example installing a 29mm retainer allows you to use hobby-style, HP-style and even HP motors in the rocket.
To install a retainer in a new rocket kit - do not install the thrust ring and engine clip. Attach the retainer base to motor mount tube. Done.
Black powder motors do not have a thrust ring on them, therefore you should install the forward thrust ring in the motor mount tube.

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Retention
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Aeropack 29 mm Retainer Cap

Aeropack 29 mm Retainer Cap

29 mm Universal Retainer Cap for any Aeropack 29mm retainer base Light-Weight Cap for all 29mm AeroPack Retainers. (not for hybrid motors) Precision Machined 6061-T6 Aluminum With Mil-Spec Type II Black Anodizing Large Quick-Turn Threads For Fast, Tool-Free Motor Change Just Slide Motor In And...
$13.00

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Aeropack 38 mm Retainer Cap

Aeropack 38 mm Retainer Cap

38 mm Universal Retainer Cap for any Aeropack 38mm retainer base Light-Weight Cap for all 38mm AeroPack Retainers. (not for hybrid motors) Precision Machined 6061-T6 Aluminum With Mil-Spec Type II Black Anodizing Large Quick-Turn Threads For Fast, Tool-Free Motor Change Just Slide Motor In And...
$14.00

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Aeropack 54 mm Retainer Cap

Aeropack 54 mm Retainer Cap

54 mm Universal Retainer Cap for any Aeropack 54mm retainer base Light-Weight Cap for all 54mm AeroPack Retainers. Precision Machined 6061-T6 Aluminum With Mil-Spec Type II Black Anodizing Large Quick-Turn Threads For Fast, Tool-Free Motor Change Just Slide Motor In And Thread On Cap, That's It!
$16.00

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