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    Mechanism Kits

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    Constant Force Spring Kit

    #TTB-ELEV-SPRING
    $72,45 $69,44
    ( 5 En stock)

    This kit provides enough hardware to mount your constant force spring to your elevator structure. Includes a 16.5 pound 48" inch travel constant force spring, 2 solid aluminum brackets and assorted hardware.

    Elevator #25H Chain Drive Kit

    #TTB-ELEV-DRIVE
    $289,84 $277,80
    ( 2 En stock)

    Total kit weight: 4 pounds including both 10 ft rolls of 25H chain.

     

    This kit provides the components related to making the 1st stage of your elevator move up and down using #25H chain.

     

    Elevator #25 Chain Drive Kit (1 kit per elevator)

    QTY

    TTB-ELEV-DRIVE

    25 Chain Attachment Part

    2

    ELEV-DRIVE-001

    Top Elevator Bearing Plate

    2

    ELEV-DRIVE-002

    25 Chain 22t 1/2" Hex Sprocket

    4

    ELEV-DRIVE-003

    Thrifty Planetary Mount Plate

    2

    ELEV-DRIVE-004

    Planetary Mount Spacer

    8

    ELEV-DRIVE-005

    25H Chain 10 ft

    2

    ELEV-DRIVE-006

    #25 Chain Tensioner

    2

    ELEV-DRIVE-007

    1.375" Long Aluminum Spacers for Crossbar

    4

    ELEV-DRIVE-008

    Half Inch Hex Coupler - TTB-0055

    2

    TTB-0055

    M3 Locknuts

    6

    90576A102

    Button head 10-32 Bolt 2.25" Long

    6

    91255A815

    5/16" Long 8-32 Button Head Screw

    4

    13080

    5 Inch Long 10-32 bolt

    4

    287951

    3/4" Long 10-32 Button Head Screw

    8

    13117

    10-32 Thin Locknut

    Half Inch Hex Bearing

    4

    2

    18196

    TTB-0001

    Elevator Dyneema Pulley Kit

    #TTB-ELEV-PULLEY
    $86,99
    ( 8 En stock)

    Overall Kit Weight: 12 oz or .75 lbs.

     

    This includes enoug hardware to run 1 length of dyneema cable with all the included pulleys, brackets, clamping plates and dyneema cable. If you want to run 2 separate lengths of dyneema cable, please purchase 2 kits.

     

    Elevator Dyneema Pulley Kit

    QTY

    TTB-ELEV-PULLEY

    4mm Dyneema Cable Pulley Bracket

    2

    ELEV-PULLEY-001

    4mmDyneemaCablePulleyAssembly

    2

    ELEV-PULLEY-002

    Dyneema Tensioning CAM

    2

    ELEV-PULLEY-003

    Cable Clamp Base Plate

    1

    ELEV-PULLEY-004

    Cable Clamp Top Plate

    1

    ELEV-PULLEY-005

    25 FT Dyneema Cable 4mm Diameter

    1

    TTB-0056

    Socket Head 10-32 Bolt 1.25" Long

    4

    5019

    Button head 10-32 bolt 3/8" Long

    6

    13113

    Socket head 10-32 Bolt 2.5" Long

    2

    8231

    Socket Head 10-32 Bolt 3" Long

    2

    8233

    #10 Washer

    2

    7618

    10-32 Thin Locknut

    2

    18196

    Socket Head 1/4-20 Bolt 1.25" Long

    2

    5028

    1/4-20 Thin Locknut

    2

    18197

    Telescoping Tube Kit - for 2" x 2", 1.5" x 1.5", 1" 1/16th extrusion

    #TTB-TUBE
    $260,86 $250,02
    ( 10 En stock)

    Base Stage Kit + Add 2nd Stage Kit - Designed for 1.5" box to 1" box tubing

     

    Elevate your robot to new heights with the Thrifty Telescoping Tube System Kit. This kit includes all the hardware to attach to stock 1/16" thick 2" x 2", 1.5" x 1.5" & 1" x 1" box extrusions and allows them to passively extend with the assistance of constant force springs.

    Thrifty Elevator 2 Stage Kit

    #TTB-ELEVATOR-2STAGE
    $868,12 $832,06
    ( 5 En stock)

    Thrifty Elevator is designed to work with the various brands of 2 in. x 1 in. aluminum box extrusion of any wall thickness on the market. Your team can work with what they like – REV MAXTube, VEX VersaFrame, or simply plain 2" x 1" from your aluminum metal supplier of choice. You bring the 2" x 1" tubing, hex shaft, structural fasteners and gearboxes and we’ll provide the rest.

    Thrifty Everybot Climb Hook - QTY 2

    #TTB-0047
    $36,22 $34,71
    ( 0 En stock)

    Need to help teams at your event get on the low rung bar? Only have a few hours to help them accomplish this task? No problem with the Thrifty Every Climb Hooks!

    Thrifty Swerve: 5 Modules + Frame + Tread Bundle - Krakens

    #TTB-SWERVE-5MODULE-FRAME-BUNDLE-KRAKENS
    $2450,00
    ( 0 En stock)

     

    Everything you need to mechanically get your swerve drive up and running plus a spare module just in case. Includes 5 Thrifty Swerve modules, 4 sticks of 1/8" wall 2x1 aluminum extrusion and a roll of 1.5" wide x 10ft 3 ply black neoprene rubber tread.

    Thrifty Swerve: 5 Modules + Frame + Tread Bundle - 8mm Keyed Drive/ 8mm Keyed Rotation

    #TTB-SWERVE-5MODULE-FRAME-BUNDLE-8MMS
    $2450,00
    ( 1 En stock)

     

    Everything you need to mechanically get your swerve drive up and running plus a spare module just in case. Includes 5 Thrifty Swerve modules, 4 sticks of 1/8" wall 2x1 aluminum extrusion and a roll of 1.5" wide x 10ft 3 ply black neoprene rubber tread.

    Thrifty Swerve: 5 Modules + Frame + Tread Bundle - Kraken Drive/ 8mm Keyed Rotation

    #TTB-SWERVE-5MODULE-FRAME-BUNDLE-KRAKEN+8MM
    $2450,00
    ( 1 En stock)

    Everything you need to mechanically get your swerve drive up and running plus a spare module just in case. Includes 5 Thrifty Swerve modules, 4 sticks of 1/8" wall 2x1 aluminum extrusion and a roll of 1.5" wide x 10ft 3 ply black neoprene rubber tread.

    Sliding Elevator Bearing Block Kit

    #TTB-ELEV-SLIDE
    $138,20
    ( 0 En stock)

    Note: The Sliding Elevator Bearing Block kit plates have been updated for 2024 to improve the ability to mount to grid pattern tubing. The threaded holes have also been changed to 1/4-20 to utilize a thicker bolt for the side bearings.

     

    Full kit weight: .75 pounds - 1 bearing block + hardware and bearings weighs 3 ounces.

     

    The Sliding Elevator Bearing Block Kit provides enough hardware to build up one stage of a sliding 2" x 1" box extrusion elevator.

     

    For every stage in your elevator's design, add another kit.

    1 stage elevator = 1 kit

    2 stage elevator + carriage = 2 kits

    Thrifty Cycloidal Gearbox Kit - 23:1 Reduction

    #TTB-0300
    $299,00
    ( 0 En stock)

    The Thrifty Cycloidal is a fully-assembled, battle tested all-in-one solution designed for high torque arms. Designed in collaboration with 118 and tested on the 2025 Robonauts robot's arm and intake, Thrifty Bot is proud to offer the first commercially available FRC cycloidal gearbox.

     

    Kit includes the following items:

     

    Item NamePart NumberQuantity
    Thrifty Cycloidal Gearbox KitTTB-0300 
    23:1 Cycloidal GearboxTTB-CYC-GEARBOX-011
    2" Long SplineXS ShaftTTB-CYC-GEARBOX-021
    Cycloidal Gearbox Face Mount PlateTTB-CYC-GEARBOX-031
    Cycloidal Gearbox Motor Mount AdapterTTB-03011

     

    Gear Ratio: 23:1

     

    Why Cycloidals?

     

    Cycloidal drives offer higher torque density and virtually zero backlash compared to equivalent planetary gearboxes, thanks to their multi‑lobed cam engaging many pins rather than just a few gears. They’re inherently more shock‑resistant—so impacts and sudden loads won’t damage teeth—and their simple, rolling contact design means fewer wear points and longer service life. You get a more compact, durable unit that holds position better, making cycloidals ideal for anywhere you need a precise pivot on a robot. More info on Cycloidals here.

     

    • Backlash: ~0.3 °

    • Reversing Durability: Over 15,000 full‑reverse cycles at 1,000 RPM input and 25 Nm output torque with no loss of operation

    • Static Load Capacity: Survives a locked‑input static load up to ~350 Nm

    • Weight: Individual gearbox: .91 lbs

      Gearbox + motor mount plate + mounting plate: 1.14 lbs

     

    Designed For FRC Power Systems

     

    • Motor Compatibility: Optimized for the Kraken X60 motor (stall torque ~4 Nm through a legal FRC power system)

    • Kraken spline input with mounting holes for X60 or X44
    • Efficiency: ~80% overall gearbox efficiency, delivering ~75 Nm at the output

    Spline XS Shaft - 2 Inch Length

    #TTB-0301
    $13,95
    ( 0 En stock)

    Steel SplineXS shafts. Primarily used with the Thrifty Cycloidal gearbox. Stub shafts include 10-32 threaded holes for a 3/8" long bolt.

    Spline XS Shaft - 2.5 Inch Length

    #TTB-0303
    $15,25
    ( 0 En stock)

    Steel SplineXS shafts. Primarily used with the Thrifty Cycloidal gearbox. Stub shafts include 10-32 threaded holes for a 3/8" long bolt.

    Thrifty Cycloidal Arm Joint Kit

    #TTB-0302
    $140,00
    ( 0 En stock)

    This kit includes all the parts you need to quickly and easily mount your Thrifty Cycloidal gearbox inline with 2" x 1" grid pattern box extrusion.

     

    See the Gitbook documentation on the many ways to use the Thrifty Cycloidal.

     

    Kit contents:

     

    Thrifty Cycloidal Arm Joint KitTTB-0302QTY
    2.5" Long SplineXS ShaftTTB-03031
    Inner Cycloidal Joint GussetTTB-CYC-ARM-012
    Outer Cycloidal Joint GussetTTB-CYC-ARM-022
    1/4" Thick Cycloidal SpacerTTB-CYC-ARM-032
    Cycloidal Joint 2x1 SpacerTTB-CYC-ARM-042
    Hex Adapter Offset SpacerTTB-CYC-ARM-051
    1/2" Long 8-32 Button Head Bolts91255A19424
    5/16" Long 8-32 Button Head Bolts91255A19116
    3/8" Long 10-32 Button Head Bolts91255A2632
    #10 Washer76182
    2" Long 10-32 Socket Head Bolts91251A3534
    1.5" Long 10-32 Socket Head Bolts91251A3514
    10-32 Locknuts90631A4118

    Thrifty Cycloidal Output Adapter Kit

    #TTB-0304
    $35,00
    ( 0 En stock)

    This kit allows teams to interface 1.875" and 2" bolt circle pattern items with the Thrifty Cycloidal gearbox.

     

    Kit contents include -

     

    Thrifty Cycloidal Output Adapter KitTTB-0304QTY
    Thrifty Cycloidal 1.875" + 2" Bolt Circle AdapterTTB-CYC-ADAPTER1
    5/16" Long 8-32 Socket Head Bolts91251A19112