FingerTech 'Viper' Lifter Add-On

Price: 60.36 CAD
49.55 USD 41.09 EUR
In Stock: 22

• 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 (Pre-order)

*For pre-orders placed after March 30th, it looks like we will be low on Twist Hubs / Snap Hubs. Twist Hub restock is expected mid-May.
May 7: tinyESCs have shipped and are expected to arrive the week of May 17.  If all is well with them, Vipers will start shipping a few days after.
April 29: PCB factory updated that they are still assembling wires and hope to ship tinyESCs next week.  If that holds, Vipers should start shipping second week of May.
April 8: PCB factory is delayed while they wait for wires. (Which of you didn't knock on wood??)  Viper ready-date now expected first week of May.
March 30: PCB factory has said they expect to ship within two weeks!  Keeping Viper estimate at mid-April in case anything goes wrong (knock on wood!)
March 28: No word from our pcb factory so I am pushing the estimated arrival to mid-April.
March 17: We don't usually do this but many people have asked, so we are allowing pre-orders on the next batch of Viper kits. The current expected arrival is around the beginning of April, when our restock of tinyESCs should arrive. This is not a guarantee! (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. *If we run out of Twist Hubs you will be given the choice of waiting for them to restock or shipping with Snap Hubs.

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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