High Power Model Rocketry

Centering Rings for 7.51" Airframe

Centering Rings for 7.51" Airframe - Main image
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$6.97 $27.55 In stock

DESCRIPTION

Centering Rings that fit inside of our Airframe tubes and over our Motor Mount Tubes. Commonly referred to as 7.5" diameter airframes. The airframe ID=7.51" - OD=7.675". Various sizes and packages to fit your scratch building needs!

CENTERING RINGS

  • CR-7.51-38mm: Centering rings for BT-7.51 to 38mm mount. 2 pack 1/4″ thick, includes SCM3 1/4″ eye bolt and Z clip motor retention.
  • CR-7.51-54mm: Centering rings for BT-7.51 to 54mm mount. 2 pack 1/4″ thick, includes SCM3 1/4″ eye bolt and Z clip motor retention.
  • CR-7.51-75mm: Centering rings for BT-7.51 to 75mm mount. 2 pack 1/4″ thick, includes SCM3 1/4″ eye bolt and Z clip motor retention.
  • CR-7.51-98mm: Centering rings for BT-7.51 to 98mm mount. 2 pack 1/4″ thick, includes SCM-4 U Bolts for recovery attachment.
  • CR-7.51-1x54mm4x38mm Cluster: Centering rings for BT-7.51 to 1x54mm 4x38mm cluster mount. 2 pack 1/4″ thick.
  • CR-7.51-1x75mm4x38mm Cluster: Centering rings for BT-7.51 to 1x75mm 4x38mm cluster mount. 2 pack 1/4″ thick.
  • CR-7.51-1x98mm4x29mm Cluster: Centering rings for BT-7.51 to 1x98mm 4x29mm cluster mount. 2 pack 1/4″ thick.
  • CR-7.51-1x75mm4x38mm4x29mm Cluster: Centering rings for BT-7.51 to 1x75mm 4x38mm 4x29mm cluster mount. 2 pack 1/4″ thick.
  • CR-7.51-1x98mm8x29mm Cluster: Centering rings for BT-7.51 to 1x98mm 8x29mm cluster mount. 2 pack 1/4″ thick.
  • CR-7.51-1x54mm4x29mm Cluster: Centering rings for BT-7.51 to 1x54mm 4x29mm cluster mount. 2 pack 1/4″ thick.
  • CR-7.51-7x54mm Cluster: Centering rings for BT-7.51 to 7x54mm cluster mount. 2 pack 1/4″ thick.
  • CR-7.51-5x54mm Cluster: Centering rings for BT-7.51 to 5x54mm cluster mount. 2 pack 1/4″ thick.
  • BA-7.51: Bulkhead fits inside of tube coupler TC-7.51 tube coupler to fit 7.51″ airframe. 1/4″ wood bulk plate and includes 1/4"x20 U bolt
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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.6 / 5 · 5 reviews)

Ruby ★★★★★

Finally got my build square and true after swapping in these centering rings - the 7.51" inner diameter matches the tube walls snugly without any wrestling. The fit over the motor mount tube is equally tight, so no sloppy wobble during assembly.

David ★★★★★

The fit on these rings is spot-on for the 7.51" inner diameter, and they slid over my motor mount tube without any forcing. Sanded the edges lightly and they seated perfectly flush inside the airframe.

Joshua L. ★★★★★

These fit my 7.5-inch build perfectly, sliding right over the motor mount tube without any sanding. The ID measured exactly 7.51 inches like the listing said, so my fin can is true and centered.