Loc Centering Rings for 3.90" Airframe

Different sizes and bundles of Centering Rings are available to suit your needs for scratch building. These rings are designed to fit within our Airframe tubes and around our Motor Mount Tubes.

CR-3.90-29mm: Centering rings designed for BT-3.90 to 29mm motor mounts, provided in a set of two with a thickness of 1/8 inch. The package includes an eye bolt and Z Clip for motor retention.

CR-3.90-38mm: Centering rings designed for BT-3.90 to 38mm motor mounts, provided in a set of three with a thickness of 1/4". The package also includes an SCM3 1/4" eye bolt and Z Clip motor retention system.

CR-3.90-54mm: These centering rings are designed for BT-3.90 to 54mm motor mounts and come in a pack of three with a thickness of 1/4". They include an SCM3 1/4" eye bolt and Z Clip motor retention system. Additionally, they can be easily attached to 4" LOC N RING adapters.

CR-3.90-75mm: Centering rings designed for BT-3.90 to 75mm motor mounts, sold in packs of three with a thickness of 1/4". The front ring features a notch for accommodating a recovery Y Harness or equivalent device.

CR-3.90-4x29mm: These are centering rings designed for a BT-3.90 to 4x29mm cluster motor mount. The pack contains three rings that are 1/4" thick and come with an SCM3 1/4" eye bolt included.

CR-3.90-3x38mm: Centering rings designed for BT-3.90 to 3x38mm cluster motor mount, come in a set of three with a thickness of 1/4 inch, and include an SCM3 1/4 inch eye bolt.

CR-3.90-1x38mm-3x24mm: Centering rings are provided for a BT-3.90 to 1x38mm 3x24mm cluster motor mount, consisting of a set of three rings that are each 1/4" thick. Additionally, the package includes an SCM3 1/4" eye bolt.

CR-3.90-3x29mm: Essential centering rings for a BT-3.90 to 3x29mm cluster motor mount, comprising a set of three rings that are 1/4" thick and come with an SCM3 1/4" eye bolt included.

CR-3.90-7x29mm: Centering rings designed for BT-3.90 to 7x29mm cluster motor mounts, offered in a set of three that are 1/4" thick and come with an SCM3 1/4" eye bolt. The front ring accommodates a 3x29mm motor configuration and these rings are also utilized in the construction of the 4" ULTIMATE rocket kit.

LNR-3.90-54mm3S: Importance: Centering rings designed for BT-3.90 to 54mm motor mounts, featuring slotted rings suitable for accommodating 3 fins made of .25" plywood. Sold in a pack of 3, each ring is 1/4" thick and comes with SCM3 1/4" eye bolt and Z clip motor retention hardware. These rings are also utilized in the construction of the 4" AWM Red Der Max and Aerotech Mega Initiator rocket kits.

LNR-3.90-54mm4S: Centering rings designed for BT-3.90 to 54mm motor mounts, featuring slots for securing 4 fins made of .25" plywood. This set includes three rings that are 1/4" thick, along with an SCM3 1/4" eye bolt and Z clip motor retention mechanism. These rings are utilized in rocket kits such as the 4" Goblin, IRIS, Black Brant, HAWK, and Phoenix.

BA-3.90: The bulkhead is designed to be placed within the tube coupler TC-3.90, which is meant for a 3.90" airframe. It features a 1/4" wooden bulk plate and comes with an SCM3 1/4" eye bolt.