The Exact Belt for the Scalar Weapon System The Scalar weapon belt is the 267-3M-05 timing belt spec’ed by Repeat Robotics for the Scalar antweight horizontal combat robot kit. This isn’t a generic off-the-shelf timing belt — Repeat sources this belt thicker than standard antweight timing belts specifically to handle the shock loads of combat. If you’re running a Scalar, this is the correct belt for your weapon system. Thicker Than Standard for Combat Durability Standard 3mm timing belts — including the FingerTech S3M belts commonly used in combat robots — are designed for lighter-duty power transmission. The Scalar weapon belt is sourced thicker to survive the repeated shock loading of a spinning weapon. When your blade takes a hit and the drivetrain absorbs that energy, a thicker belt is less likely to skip teeth or snap outright. That’s the difference between walking away from a match and limping out. Designed for the Scalar Weapon Stack The 267-3M-05 designation tells you exactly what you’re working with — 267mm pitch circumference, 3mm pitch, 5mm wide. This belt is designed to work with the 18T Scalar weapon pulley and the Scalar weapon hub as part of a complete, purpose-built weapon drivetrain. The Scalar Weapon Kit ships with two belts — one installed and one spare — because Repeat Robotics knows builders need backups. Stock Spares Before Your Next Event Belts are a combat consumable. A hard hit, a tooth skip, or a belt that’s seen one too many matches can put you out of a tournament if you don’t have a spare in your kit bag. Experienced builders keep 2–5 belts on hand. At this price point there’s no reason not to. Order extras now and you’ll never be the builder frantically looking for a belt between rounds. Compatible Belt Standards The 267-3M-05 uses a 3mm pitch tooth profile compatible with both HTD3M and S3M pulleys, making it easy to source replacements or verify compatibility with custom designs. The 5mm width is the standard for the Scalar weapon system — do not substitute a wider or narrower belt without confirming pulley compatibility. If you’re building a custom antweight weapon system and want to use this belt, pair it with the Scalar 18T weapon pulley for a proven combination.
