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Home » Categories » Kits and Parts » Viper Kits and Add-Ons

FingerTech 'Viper' Horizontal Spinner Add-On
FingerTech 'Viper' Horizontal Spinner Add-On
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Add a vicious horizontal spinner weapon to your Viper Combat Robot!
(Blade not included. Shown with optional Titanium 6-inch Weapon Blade!)
(Requires modifying the original plastic armor, or buy a new set here: Horizontal Spinner Armor Set)

Weight: 70grams (2.47oz) - added to the base kit, the total weight (with optional Titanium Blade or Chipper Blade) is 383grams (13.5oz).
Blade diameter: 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.

Kit Includes:
Motor: D2822/17 1100KV Brushless Motor + screws
Controller: 20A Brushless Speed Controller
Blade Hub: Holds any blade <=3mm thick with bore of 10mm, 16mm (5/8in), or 20mm
Instructions: Detailed instructions with pictures. (Download here)

- Wrenches: 15/16in and 1in
- Threadlock liquid
- Electrical tape, ziptie, or twist-tie
- Phillips screwdriver
- C-clamp for weapon safety lock
- Weapon Blade - any blade 68grams (2.39oz) or less. Recommended: 6-inch Titanium Weapon Blade

Viper Horizontal Spinner add-on.IGS (full bot, old version with blade underneath)
4 Product Reviews - Average rating 4 / 5 (Show All)

Click to review this product

Great weapon on Viper!

- 26th August 2018

My son coupled this weapon with a viper kit. Very effective, took second place in his very first contest. See the blade working successfully here: https://youtu.be/U9RtZ-0UPhU

Powerful but unreliable

- 09th February 2018

I've used this kit on two separate bots now, both of which were 2wd undercutters. The main issue is that the hub mounts directly to the motor shaft. While this does allow for a VERY powerful weapon, it results in the motor shaft becoming a critical weak point in the weapon system. I've sheared four motor shafts using this kit.
[FTR: The Viper and its add-ons are ripe for upgrading once you've broken them in! Some builders have replaced the stock motor shafts with hardened dowel pins to solve that particular issue.]


- 25th December 2015

I had the opportunity to see at least two Viper kits using the spinner add-on at Robothon 2015 earlier this year. Both bots lost their spinners in both matches each of them competed in. The one that competed in the antweight rumble also lost its spinner there. The blade itself is quite good(as Cyclone from NERC has showcased), but the system as is admittedly has proven to be less than impressive. [FTR: Blade Hub is already being redesigned away from setscrew to clamp mount!]


- 11th July 2015

I entered the robot with a spinner and got 1st place

Click to review this product

FingerTech 'Viper' Combat Robot KitFingerTech 'Viper' Combat Robot Kit - 198.20 CAD
The last missing part (Snap Hubs) are scheduled to arrive Dec 14.  To speed up shipping orders out, Vipers are being put in stock now (Dec 7) but will not ship until Dec 14 or 17.
Due to the ongoing Canada Post strike, it is highly recommended you choose a courier (DHL, Purolator, FedEx, UPS) if this is to be a Christmas gift.

• The Viper Combat Robot Kit is quite simply the best way to get into combat robotics. You will not find a cheaper robot kit with this functionality and expandability anywhere else.
• The Viper kit comes with everything you need to get started in competitive robotics:
- Chassis, motors, wheels, speed controllers, radio, and an easy to follow instruction manual.
• Once you've mastered the basics, upgrade your kit to a Lifter or a Spinner with optional add-ons!
FingerTech 6inch x 3mm Weapon BarFingerTech 6inch x 3mm Weapon Bar - 37.84 CAD
• This double-sided weapon bar can be used for horizontal spinners or really big "Nightmare"-style vertical spinners
• Mounts with the FingerTech Blade Hub.
"Chipper" Weapon Blade"Chipper" Weapon Blade - 36.04 CAD
• Want to really take a bite out of your opponents?  The carbide teeth on this blade will cut through nearly any armor!
• 6" diameter, 5/8" bore. Pairs perfectly with the FingerTech Blade Hub.

Price: 54.50 CAD
40.76 USD 35.93 EUR
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