High Power Model Rocketry

Centering Rings for 5.38" Airframe

Centering Rings for 5.38" Airframe - Main image
$6.15 $26.22 In stock

DESCRIPTION

Centering Rings that fit inside of our Airframe tubes and over our Motor Mount Tubes. Commonly referred to as 5.5" diameter airframes. The airframe ID=5.38" - OD=5.54". Various sizes and packages to fit your scratch building needs!

CENTERING RINGS

  • CR-5.38-38mm: Centering rings for BT-5.38 to 38mm mount. 2 pack 1/4″ thick, includes SCM3 1/4″ eye bolt and Z clip motor retention.
  • CR-5.38-54mm: Centering rings for BT-5.38 to 54mm mount. 3 pack 1/4″ thick, includes SCM3 1/4″ eye bolt.
  • CR-5.38-75mm: Centering rings for BT-5.38 to 75mm motor mount. 3 pack 1/4″ thick. Includes SCM4 U bolts and Z Clip motor retention.
  • CR-5.38-98mm: Centering rings for BT-5.38 to 98mm motor mount. 3 pack 1/4″ thick.
  • CR-5.38-4x29mm Cluster: Centering rings for BT-5.38 to 4x29mm cluster motor mount. 3 pack 1/4″ thick, includes SCM3 1/4″ eye bolt.
  • CR-5.38-1x38mm4x29mm Cluster: Centering rings for BT-5.38 to 1x38mm 4x29mm cluster motor mount. 3 pack 1/4″ thick, includes SCM3 1/4″ eye bolt.
  • CR-5.38-4x38mm Cluster: Centering rings for BT-5.38 to 4x38mm cluster motor mount. 3 pack 1/4″ thick, includes SCM3 1/4″ eye bolt.
  • CR-5.38-1x54mm4x29mm Cluster: Centering rings for BT-5.38 to 1x54mm 4x29mm cluster motor mount. 3 pack 1/4″ thick, includes SCM3 1/4″ eye bolt.
  • CR-5.38-1x54mm6x29mm Cluster: Centering rings for BT-5.38 to 1x54mm 6x29mm cluster motor mount. 3 pack 1/4″ thick, includes SCM3 1/4″ eye bolt.
  • CR-5.38-5x38mm Cluster: Centering rings for BT-5.38 to 5x38mm cluster motor mount. 3 pack 1/4″ thick, includes SCM3 1/4″ eye bolt.
  • CR-5.38-3x38mm2x29mm Cluster: entering rings for BT-5.38 to 3x38mm 2x29mm cluster motor mount. 3 pack 1/4″ thick, includes SCM3 1/4″ eye bolt.
  • CR-5.38-7x38mm Cluster: Centering rings for BT-5.38 to 7x38mm cluster motor mount. 3 pack 1/4″ thick.
  • LNR-5.38-54mm4S25: LOC N Rings – Centering rings for BT-5.38 to 54mm motor mount. Slotted rings to accept 4 fin .25″ plywood. 3 pack 1/4″ thick, includes SCM3 1/4″ eye bolt and Z clip motor retention. Same rings used in the 5.5″ version of the Goblin.
  • LNR-5.38-54mm3S25: LOC N Rings – Centering rings for BT-5.38 to 54mm motor mount. Slotted rings to accept 3 fin .25″ plywood. 3 pack 1/4″ thick, includes SCM3 1/4″ eye bolt and Z clip motor retention. Same rings used in the 5.5″ version of the Wolverine.
  • LNR-5.38-75mm3S375: LOC N Rings – Centering rings for BT-5.38 to 75mm motor mount. Slotted rings to accept 3 fin .375″ plywood. 3 pack 1/4″ thick, includes SCM4 U bolts and Z clip motor retention. Same rings used in the 5.5″ version of the Ultimate Buzz.
  • LNR-5.38-75mm4S375: LOC N Rings – Centering rings for BT-5.38 to 75mm motor mount. Slotted rings to accept 4 fin .375″ plywood. 3 pack 1/4″ thick, includes SCM4 U bolts and Z clip motor retention. Same rings used in the 5.5″ version of the Nike Zeus.
  • BA-5.38: Bulkhead fits inside of tube coupler TC-5.38 tube coupler to fit 5.38″ airframe. 1/4″ wood bulk plate and includes 1/4"x20 U bolt.
Before you pay

Check the method and total at checkout.

When it ships

Allow for processing time as well as the journey to you.

Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

View policy
If you need a refund

Keep your order number and contact the store to start.

Please contact us for the refund processing timeframe before returning an item.

View policy
Delivery costs

Review the cost for your destination and chosen service.

Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

View policy
Returning an item

Check the return conditions before sending anything back.

United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

View policy

Customer Reviews (4.8 / 5 · 5 reviews)

Olivia ★★★★★

I was worried about slop in the motor mount, but these rings slide over the tube with almost no play before the epoxy even sets. The 5.38" ID matched my airframe dead on, no sanding needed.

Owen O. ★★★★★

Snug fit over the 5.38" ID airframe with barely any sanding needed, which saved me a ton of time on this build. The motor mount tube slides through clean and square, and the rings held up fine when I filleted the joints.

Chloe F. ★★★★★

I was worried the fit would be sloppy, but these seat perfectly over the motor mount tube and snug into the 5.38" ID airframe with barely any sanding needed. The sizing is dead on and they're thick enough to hold a solid bond.