Cluster Rings

Cluster Centering rings are used to keep several motor tubes properly nested within the airframe tube.

Here you will find cluster rings for larger motor tubes (29mm and 38mm). We offer centering rings for low, mid and high-power rockets, you can change your selection by clicking buttons below.

Thrust Rings
Thrust Rings
Smaller Motor Tubes
Smaller Centering Rings
Larger Motor Tubes
Larger Centering Rings (>=29mm)
All Centering and Thrust Rings
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Centering Rings
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Supplies

4.0 - 3 x 1.6 Centering Ring

4.0 - 3 x 1.6 Centering Ring

Cluster centering ring, fits 4.0" airframe. (3) 38mm (1.6") holes. 3/16" birch plywood. Fits into any 4" airframe. Works best with Blue Tube, Madcow Paper and Fiberglass, LOC Paper and Phenolic 38mm motor tube. (1.625 - 1.635" motor tube OD) Please see next item for same ring cut for different 38mm...
$6.25

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4.0 - 3 x 1.6 (P) Centering Ring

4.0 - 3 x 1.6 (P) Centering Ring

Cluster centering ring, fits 4.0" airframe. (3) 38mm (1.6") holes. 3/16" birch plywood. Fits into any 4" airframe. Works best with PML and GLR phenolic, Hawk Mt and LOC fiberglass 38mm motor tube. (1.65" motor tube OD) Please see previous item for same ring cut for different 38mm tubes.
$6.25

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