High Power Model Rocketry

Tube Coupler

Tube Coupler - Main image
$0.61 $0.89 In stock

Tube couplers used for LOC cardboard airframes.

NOTE: all couplers on this page are manufactured at these lengths. We do not have longer versions!

  • Tube Coupler for 29mm Tube: 2.5" long. Coupler Tube fits Airframe BT-1.14 (29mm motor tube)
  • Tube Coupler for 1.52" (38mm) Tube: 5″ long fits Airframe BT-1.52. (38mm motor tube)
  • Tube Coupler for 2.14" (54mm) Tube: 5.5″ long. Fits Airframe BT-2.14 (54mm motor tube)
  • Tube Coupler for 2.56" (63mm) Tube: 6″ Long. Fits Airframe BT-2.56.
  • Tube Coupler 3" x 8" (75mm) Tube: 8″ Long. Fits Airframe BT-3.10. Also used for EB-300L
  • Tube Coupler 3" x 6" (75mm) Tube: 6″ long. Fits Airframe BT-3.10. Also used in BAF-300 and EB-300LT
  • Tube Coupler 3.90" (98mm) Tube: 8″ Long. Fits Airframe BT-3.90
  • Tube Coupler 5.38" Tube: 11″ Long. Fits Airframe BT-538
  • 15" Long Version TC-7.51: 15″ Long. Fits Airframe BT-7.52
  • Tube Coupler 2" x 1" for 24mm: Coupler Tube for LOC Mini. LBT-50 2″ long
  • Tube Coupler for 1.9" Tube: 5″ long. Fits 1.9″ Airframe
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Customer Reviews (4.8 / 5 · 5 reviews)

Owen ★★★★★

The 2.5-inch length is exactly what I needed for splicing my LOC airframe sections, and the fit is tight enough that I didn't have to fuss with tape. It took a little elbow grease to seat, but that's the kind of secure joint you want before gluing.

Avery U. ★★★★★

The coupler slides snugly into my 29mm airframe without any sanding needed, saving me a lot of prep time. It's short enough to keep the overall rocket length manageable for a mid-power build.

Abigail ★★★★★

Exactly the right length for a mid-power LOC build, and the fit on the 29mm tube is tight enough that I didn't need extra glue. Saves me from having to cut my own couplers.