HBM-23 Dart Belt - Individual Links

This is my design for a disintegrating dart belt. This was originally designed for the HBM-23 blaster, but is now parameterized to potentially work for many custom variations of blasters.

The two .stl and .step files are designed for the HBM-23. The 36mm version will work with the standard HBM-23 components. The 39mm version is designed specifically for my reworked HBM-23 components. The longer links entirely encase the darts, making the rubber tips less likely to protrude, get caught and cause jams.

The Fusion 360 file is designed with the following configurable parameters:

• Diameter Outer
• Diameter Inner
• Diameter Step Down
• Height
• Pawl Engagement Length

Change History

Update: September 13, 2024

• Now includes Fusion360 file with adjustable parameters!
• Removed the flat side as it prevents the belt from winding and fitting tightly in ammo boxes
• Latest link design features a lip on the bottom, preventing darts from being pushed all the way through
• Distance between links changed from 21mm to 19mm to more accurately fit the feed sprocket
• Increased inner diameter of links to from 12mm to 13.3mm to loosen the grip on darts, making them easier to push out
• Increased step down diameter (the part that grips the dart) of links from 11mm to 12.1mm to loosen the grip on darts, making them easier to push out
• Two versions now available
  • 36mm fits the stock HBM-23
  • 39mm version fits my custom HBM-23 parts

Update: August 24, 2024

• Updated the belt to reduce clearance between links, thus making the links more rigid and more reliable
• Reduced the amount of grip the bottom link has on the dart making it easier to push out and less likely to cause a jam
• Added a flat slide to the link to help feed reliability - THIS SIDE FACES FACES UP
• Note: THE LINK IS DIRECTIONAL - the double link side feeds into the blaster first

Making these updates has helped my blaster run a little more jam free.