AM14U3 Chassis

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THIS PRODUCT IS OBSOLETE AND HAS BEEN UPGRADED. PLEASE GO HERE FOR THE LATEST VERSION: chassis is the same as the one in the 2016, 2017 and 2018 FIRST Robotics ...Read More

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Product Overview

This chassis is the same as the one in the 2016, 2017 and 2018 FIRST Robotics Competition Kit of Parts. This product ships as an un-assembled kit. It features HiGrip Wheels, Toughbox Mini Gearboxes, and a Gates HTD Belts. If this chassis is being used for the FIRST Robotics Competition, please consider the robot perimeter rules and size this chassis accordingly.

2018 Assembly Instructions with Bumpers
2018 How to attach Bumpers Power Up Chassis

This chassis DOES NOT include CIM motors or Bumper Hardware.

Various Configurations:
Built on the same great features of the AM14U2 chassis, this can be configured into many different perimeter configurations, and now easier wheel and gearbox configurations!

It is shipped as a Kit with plates that would build its original square configuration, without any components reduced in length. This makes it the largest possible size and allows for the user to customize the chassis to become a long or wide version. The assembly instructions show how it can be changed, be sure to check out the assembly videos as well.

Box Size: 5.5" x 6.5" x 33"
Weight without CIM Motors: ~25lbs

Included Hardware:
  • 2 - AM14U3 Outer Plate (am-2951a)
  • 2 - AM14U3 Inside Plate (am-2952a)
  • 2 - AM14U3 End Plate (am-2953a)
  • 2 - TB Mini Gearbox for AM14U, 10.71:1 Ratio (am-2598_107)
  • 2 - 500EX Hex Hub (am-2568)
  • 2 - Churro, 24.25" long (am-2974)
  • 4 - 2x3 Hole Bracket (am-2954)
  • 8 - Churro, 3.375" long (am-2569)
  • 6 - 6" HiGrip Wheels (am-0940a)
  • 4 - Gates HTD, 15mm wide, 120T Belts (am-2704)
  • 4 - Gates HTD 15mm Wide 131T Belts (am-2571)
  • 4 - Gates HTD, 15mm wide, 160T Belts (am-2266)
  • 20 - 1/4-20 x 3/4 Thread Forming Screw (am-1310)
  • 4 - 3/8-16 Nylock Nut (am-1054)
  • 4 - 3/8-16 x 4.25" Hex Head Screw (am-1297)
  • 2 - Hex Plastic Spacer, 0.57" long (am-1305)
  • 4 - Small Plastic Spacer, 0.28" long (am-1306)
  • 4 - Long Plastic Spacer, 0.85" long (am-1307)
  • 16 - Pulley Half, 42 Tooth (am-2234_half)
  • 48 - 10-24 x 1.25" long Thread Forming Screw (am-1266)
  • 8 - 1614ZZ Bearing (am-0209)
  • 2 - FR8ZZ-HexHD Bearing (am-2986)
  • 40 - 10-32 x 0.5" long SHCS (am-1002)
  • 40 - 10-32 Nylock Nut (am-1042)
To make this drive, you will need a power and control system like the FRC roboRIO Robot Control Kit (am-3034) or the Cheap & Dirty Electronics for two motors (am-2493). The gearbox requires two CIM motors (am-0255), but we recommend four CIMs for situations like heavy robots, high traction, and pushing match situations that put a lot of load on the motors. You will also need at least one battery, like the Interstate Batteries (am-3062), and a charger like our 6 Amp charger (am-2555).


  • Product Lifecycle: replaced by <a href="">am-14U4</a>


Returns are not accepted for this product.

7 reviews

  1. star star star star star 5 out of 5 stars

    So simple, so robust, so versatile!

    So easy to build this straight up according to the directions and have a working robust drivetrain! We have used it that way, as well as mods to omni/H drive, expansion to a 10 wheel monstrosity (utilizing the optional wedge plate), and my favorite, which is to cut 11" off one end, keep the CoG low, use 4 CIMs, and make a highly agile 4 wheel robot. We used the optional cross plate this year; good stuff! We haven't used the TB Micro mounts yet, but this looks like it would make a simple and awesome mecanum frame as well.

    GM from Slidell

  2. star star star star empty_star 4 out of 5 stars


    Easy to put together.

    CJ from Monument

  3. star star star star star 5 out of 5 stars

    AndyMark Rocks!

    Any time I have had the occasion to work with the customer service department at AndyMark, they have gone above and beyond to help me. Can't say enough good things about this company and their service!

    CM from Macon

  4. star star star star star 5 out of 5 stars


    Every time O have dealt with Andy Mark it has been great. Quick delivery and friendly staff when I call.

    SN from E.C.

  5. star star star star star 5 out of 5 stars

    Power distribution kit

    I just received this part and have not had a chance to evaluate it yet, but I have purchased many pieces of equipment for our team through your website and have never been dissatisfied with the parts or the service.

    LF from Naples

  6. star star star star star 5 out of 5 stars

    Top product quality

    It's a surprise for our mentors to get such top quality parts for our robot.


  7. star star star star star 5 out of 5 stars


    5 Stars

    KT from Plano

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