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Arrow adaptor for caliber 68 HDR / HDS and other calibers 68

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Creation quality: 5.0/5 (1 vote)
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  • hdr_68_bottom_arrow.stl
  • hdr_68_chasee_pointe.stl
  • hdr_68_fleche.stl

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Publication date 2023-12-31 at 15:27
Design number 1678704

3D printer file info

3D model description

Designation :

Arrow adaptor for 68 caliber HDR / HDS and other 68 calibers

Adapter to use 6.25 inch long bolts on your HDR 68 or HDS 68 for use with "cobra" crossbow pistols.

Technical data :

The design is highly aerodynamic and features ailerons to stabilize the boom during flight (registered design, reproduction prohibited for commercial use).

The outer guide allows the arrow to be perfectly centered with the barrel, while the rear section captures all the power of the throttle during firing. The front fins keep the arrow in a straight trajectory and avoid undulations during flight.

The rear section features a teardrop design to limit friction in the air.

This adapter is designed to fit a boom with an external diameter of Ø6.2 mm and a length of 176 mm. (But on request, I can modify the design and adapt it to your boom diameter).

External rear guide Ø17.25 mm (fits HDR68 barrel) and front guide Ø17.1 mm (limits friction losses for front part)

Kit composition :

  • Back part 1 (to be installed on the rear bumper) in biodegradable plastic

  • Front part 2 (installs from the front of the boom and slides to the plastic part of the vang) in biodegradable plastic

3D printing settings

Layer height 0.2

infill : 100%

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