FingerTech 'Viper' Lifter Add-On

Price: 60.36 CAD
48.40 USD 40.76 EUR
In Stock: 56

• Take your Viper Combat Robot kit to the next level by adding a powerful servo-actuated lifting arm!

• Add a powerful servo and lifting arm to lift and topple your opponents.

• Mounts on the existing Viper Combat Robot

• No soldering required!

  • Description
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  Take your Viper Combat Robot kit to the next level by adding a powerful servo-actuated lifting arm!

Kit Includes:
Servo:GS-5515MG servo with FingerTech Servo Mounts
Lift Arm:Spring steel Scoop and Linkage, Polycarbonate arms, threaded Crossbar, two 2x1 Mini NutStrip pieces
Screws:Nine 4-40x0.25", eight 6-32x0.25" and four 6-32x0.5" screws plus hex wrench.
Instructions:Detailed instructions with pictures. (Download here)

Lift Height: 19cm (7.5in) - 90 degrees (can self-right from upside down!)
Weight: 117grams (4.1oz) - added onto the Viper base, the total will be 427grams (15.1oz).
Voltage: The servo can operate up to 9V.
- The 7.4V lipoly battery used for the Viper kit works great. If you wish to run the Viper off an 11.1V lipoly battery, a 9V regulator must be added.

- Threadlock liquid
- Electrical tape
- Phillips screwdriver
2 Product Reviews - Average rating 5 / 5 (Show All)

Click to review this product


- 26th March 2020

it is hard to use as a SriMech

Simple & powerful kit

- 29th January 2018

Very impressive kit.
Simple to install, strong, appears solid (based on garage skirmishes with other lifters, not full-on battle with spinners), adds self-righting capability.

After building 3 kits, I have the following comments/recommendations:
1 - Use servo L-bracket holes 1 & 4, not 2 & 5.
2 - When attaching the Viper top armor, slide the armor left/right so that the arm screw does not contact the top armor, then torque the armor screws.
3 - Add washers to the lift arm/small nut strip joints to minimize the chance that these screws will back out or tighten when operating the arm.
4 - Add a nut to the servo arm/lift arm joint & torque it to the servo arm to minimize the chance that this screw will back out or tighten when operating the arm.
5- Set Tx channel 3 endpoints to 120% or the arm will not move far enough upward to self-right. [Already done if Tx purchased from FingerTech]
6 - Do not mount a power indicator LED on the back wall of the Viper. It will stick out just barely enough to drag on the ground & hamper self-righting when the bot's nose is pointing straight up.

Click to review this product

FingerTech 'Viper' Combat Robot Kit

June 16: All Viper pre-orders up to June 12 have shipped!
Now two components are out of stock:
1. tinyESC motor controllers - A new batch is scheduled to arrive in 1~2 weeks.
2. The 33:1 ratio drive motors are also out of stock now and expected early August (no promises). By default, pre-orders will be held until the 33:1 ratio restock has arrived. If you would like your Viper sent with 22:1 ratio motors instead (50% more drive speed), add that note to your Additional Comments during checkout and they will be sent as soon as tinyESCs have arrived.
We will continue to allow pre-orders on the next batch of Viper kits. The dates given are best estimate, not guaranteed! (Last time the pcbs needed rework and were delayed two weeks. Unfortunately this is out of our control.) Vipers will be shipped out in the order that pre-orders were received. Purchasing this pre-order means you understand and accept delays.

Updates!  The Viper now uses our new and improved Twist Hubs!  It also includes a JST-to-9V Adapter cable so you can power it with a 9V battery instead of a lipoly battery (saving you the cost of battery and charger until you are ready to upgrade!).  We've also updated the sticker.  :)

• 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, armor, and an easy to follow instruction manual.  Radio and lipoly battery options are available if you need them too.

• Once you've mastered the basics, upgrade your kit to a Lifter or a Spinner with optional add-ons!

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