Viper Vertical Spinner Clamping Drum


The Viper vertical spinner clamping drum is a simple, yet highly effective vertical spinner weapon assembly for your 1lb robot. This weapon is the backbone of the Fingertech Robotics Viper’s Vertical Spinner Add-On.

ItGresa Robotics has partnered with Fingertech to bring the best of their robotics to the United States.  Fingertech’s expertise, plus our robotic activities, make the ideal partnership, and we are proud to offer Fingertech products.


8 in stock (can be backordered)

SKU: ft-clamping-drum-assy Categories: , ,


The Viper vertical spinner clamping drum is a simple vertical spinner assembly for the antweight robot class. The drum rotates like Battlebots’ Minotaur or other drum-type spinners, and a pair of AR400 steel teeth maximizes the hit with enough durability to not be severely damaged on the first go.

This kit includes the drum halves, a pair of replacement AR400 Steel impactor “Teeth,” and the correct screws for the FingerTech Viper Vertical Spinner Clamping Drum Weapon.

Spec Value
Thickness: 17mm (0.67in)
Inside Diameter (motor can size): 27.7mm (1.09in)
Drum Diameter: 61.5mm (2.42in) tooth tip-to-tip
Drum Material: 6061-T6 Aluminum
Tooth Material: AR400 Steel
Total Weight: 42grams (1.48oz)
  • 2 – Clamping Drum Halves
  • 2 – AR400 Steel Teeth</li>
  • 4 – 8-32 x 0.75in screws (Use thread-lock when assembling.)

The recommended motor to drive this weapon is the 2822/17 Brushless Outrunner 1100KV with the 4mm shaft.

  • As with anything related to combat robots, it is potentially dangerous to add a spinning weapon to a robot. Never power up the robot outside of a safety enclosure. Always use a safety lock and follow proper activation procedures.

Pro Tip: Bevel the teeth so you are hitting the opponent with a sharp edge. It will give a better bite and really send them flying!

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