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.
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 |
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 |
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 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.
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!
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.
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.
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.
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
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 Name | Part Number | Quantity |
Thrifty Cycloidal Gearbox Kit | TTB-0300 | |
23:1 Cycloidal Gearbox | TTB-CYC-GEARBOX-01 | 1 |
2" Long SplineXS Shaft | TTB-CYC-GEARBOX-02 | 1 |
Cycloidal Gearbox Face Mount Plate | TTB-CYC-GEARBOX-03 | 1 |
Cycloidal Gearbox Motor Mount Adapter | TTB-0301 | 1 |
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)
Efficiency: ~80% overall gearbox efficiency, delivering ~75 Nm at the output
Steel SplineXS shafts. Primarily used with the Thrifty Cycloidal gearbox. Stub shafts include 10-32 threaded holes for a 3/8" long bolt.
Steel SplineXS shafts. Primarily used with the Thrifty Cycloidal gearbox. Stub shafts include 10-32 threaded holes for a 3/8" long bolt.
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 Kit | TTB-0302 | QTY |
2.5" Long SplineXS Shaft | TTB-0303 | 1 |
Inner Cycloidal Joint Gusset | TTB-CYC-ARM-01 | 2 |
Outer Cycloidal Joint Gusset | TTB-CYC-ARM-02 | 2 |
1/4" Thick Cycloidal Spacer | TTB-CYC-ARM-03 | 2 |
Cycloidal Joint 2x1 Spacer | TTB-CYC-ARM-04 | 2 |
Hex Adapter Offset Spacer | TTB-CYC-ARM-05 | 1 |
1/2" Long 8-32 Button Head Bolts | 91255A194 | 24 |
5/16" Long 8-32 Button Head Bolts | 91255A191 | 16 |
3/8" Long 10-32 Button Head Bolts | 91255A263 | 2 |
#10 Washer | 7618 | 2 |
2" Long 10-32 Socket Head Bolts | 91251A353 | 4 |
1.5" Long 10-32 Socket Head Bolts | 91251A351 | 4 |
10-32 Locknuts | 90631A411 | 8 |
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 Kit | TTB-0304 | QTY |
Thrifty Cycloidal 1.875" + 2" Bolt Circle Adapter | TTB-CYC-ADAPTER | 1 |
5/16" Long 8-32 Socket Head Bolts | 91251A191 | 12 |