1.9" Centering Rings: Selection & Fit Guide

Quick answer

For a 1.9" airframe, choose centering rings that match your motor tube diameter (e.g., 24mm) and airframe inner diameter. The Centering Rings for 1.9" Airframe are a reliable choice, available in 1/8" or 1/4" thickness.

Decision rules for 1.9" centering rings

• Measure your airframe inner diameter: 1.9" airframes typically have an inner diameter close to 1.9", but always measure your specific tube. The ring must fit snugly without excessive sanding.
• Match motor tube size: The ring's inner diameter must exactly match your motor tube (e.g., 24mm). Using a mismatched ring will cause poor alignment or failure.
• Choose ring thickness: Use 1/8" for weight savings and easier fitting; use 1/4" for added strength and glue bond area. There's no wrong choice if it matches your build goals. For high-power builds, prefer 1/4" thickness.
• Check for included hardware: Some ring sets include a shock cord mount or bulkhead. The Centering Rings for 1.9" Airframe come with a shock cord mount, saving you an extra part.

Product facts

• Centering Rings for 1.9" Airframe: Packaged pair of rings for 1.9″ Airframe to a 24mm motor tube. Comes with shock cord mount. Available in 1/8″ or 1/4″ thick. You can choose thickness based on your build's weight and thrust needs, and the included shock cord mount simplifies recovery system attachment.

  

Fit guidance

Best for

• Standard 1.9" airframe builds using a 24mm motor tube
• Modelers who want a simple, affordable centering ring set with included shock cord mount

Not for

• Airframes with inner diameter significantly larger or smaller than 1.9"
• Motor tubes other than 24mm (e.g., 29mm or 18mm)