Centering,Thrust & Cluster Rings
Centering rings are used to keep a small tube nested within a large one. For example BT50/BT20 will center BT20 tube inside the BT50.
Thrust rings or engine blocks are glued inside the motor mount and prevent motors from going forwards. Model rocket motors with a thrust ring (such as Aerotech motors) do not require an engine block installed in the rocket. Motors without a thrust ring (such as Estes A/B/C/D/E) require a motor block installed in the rocket. Cluster rings hold several motor tubes.
We offer centering and cluster rings for low, mid and high-power rockets, you can narrow your selection by clicking buttons below.
Thrust rings or engine blocks are glued inside the motor mount and prevent motors from going forwards. Model rocket motors with a thrust ring (such as Aerotech motors) do not require an engine block installed in the rocket. Motors without a thrust ring (such as Estes A/B/C/D/E) require a motor block installed in the rocket. Cluster rings hold several motor tubes.
We offer centering and cluster rings for low, mid and high-power rockets, you can narrow your selection by clicking buttons below.
 Thrust Rings |
 Smaller Centering Rings |
 Larger Centering Rings (>=29mm) |
 Cluster Rings |
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BT60/BT50 Plywood Centering Rings. 6 Pack
This ring will center a BT-50 tube (24 mm engine mount tube) within a BT-60 tube. 1/8" Plywood - 0.98", - 1.593", 1/8"
BT60/BT50(T) Plywood Centering Rings. 6 Pack
This ring will center a thick-wall BT-50 tube motor tube within a BT-60 tube. 1/8" Plywood This ring is designed to fit a thick-wall motor mount tube...
BT60 - 29mm Centering Ring. 2 Pack
2 of BT60 - 29mm centering ring holds 29mm motor tube inside BT-60 airframe. 1/8" plywood. Works best with LOC paper, fiberglass, Madcow and Semroc...
BT60 - 29mm Centering Ring (TW). 2 Pack.
2 of BT60 - 29mm centering ring holds 29mm motor tube inside BT-60 airframe. 1/8" plywood. Works best with Rocketarium (TW) and Aerotech paper 29mm...
BT70/BT50 Plywood Centering Rings. 4 Pack
This ring will center a BT-50 tube (24 mm engine mount tube) within a BT-70 tube. Two disks have a motor hook slot.
BT70 - 29mm Centering Ring. 2 Pack
2 of BT70 - 29mm centering ring holds 29mm motor tube inside BT-70 airframe. 1/8" light plywood. Works best with LOC paper, Rocketarium, Madcow and...
BT70 - 29mm Centering Ring (TW). 2 Pack.
2 of BT70 - 29mm centering ring holds 29mm motor tube inside BT-60 airframe. 1/8" plywood. Works best with Rocketarium (TW) and Aerotech paper 29mm...
BT80/BT50 Plywood Centering Rings. 4 Pack
This ring will center a BT-50 tube (24 mm engine mount tube) within a BT-80 tube. 1/8" Plywood Two disks have a motor hook slot. - 0.98", - 2.555",...
BT80/BT50(T) Plywood Centering Rings. 4 Pack
This ring will center a BT-50 tube (24 mm engine mount tube) within a BT-80 tube. 1/8" Plywood Two disks have a motor hook slot. This ring is...
BT80/BT50 Plywood Centering Rings with Slots. 1 Set
These rings will center a BT-50 tube (24 mm engine mount tube) within a BT-80 tube. 1/8" Plywood. Rings have additional slots to keep the weight...