FingerTech 'Viper' Horizontal Spinner Add-On - Blade Included



  • $71.48
    Unit price per 
Shipping calculated at checkout.
We currently have 4 in stock.

Add a vicious horizontal spinner weapon to your Viper Combat Robot!

  • High-speed Brushless Motor and Controller mated to a Titanium Weapon Bar!
  • Mounts on the existing Viper Combat Robot. (Requires modifying the original plastic armor, or buy a new set here: Horizontal Spinner Armor Set)
  • No soldering required!

Kit Includes:

  • Blade: 5.5in Titanium Weapon Bar
  • Motor: D2822/17 1100KV Brushless Motor + screws
  • Controller: 20A Brushless Speed Controller
  • Blade Mount: FingerTech Blade Mount fastens directly to the motor body for maximum strength
  • Motor Mount: Angled D2822 Motor Mount fastens the weapon motor solidly at a 4 degree downward angle
  • Screws: Includes all screws required to assemble the Horizontal Spinner Add-On
  • Instructions: Detailed instructions with pictures Viper-H-Spinner-add-on-R5.pdf

* Requires modifying the original plastic armor


  • Weight: Added to the base Viper kit, the total weight is 448g (15.8oz) with a 9V battery, 421g (14.85oz) with a 2S 300mAh lipoly, or 428g (15.1oz) with a 3S 300mAh lipoly.
  • Blade diameter: 14cm (5.5in). Accommodates blades up to 15.2cm (6in) tip-to-tip
  • Voltage: 7.4V - 11.1V. The 7.4V battery included with the Viper base kit works great, but a 3S lipoly will give the weapon extra oomph! We don't recommend running this off a 9V battery, as it cannot supply the current needed for fast and repeated spin-ups.


  • Weapon Safety Lock
  • 5/64in hex wrench (came with your Viper kit)
  • Phillips screwdrivers #1 and #2
  • Threadlock liquid
  • Electrical tape, zipties, or twist-ties

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 procedure.

We Also Recommend