Constant Force Spring Kit

This 8 pack of 2.5mm thick T gussets can be used to assemble frames or other mechanisms commonly used in competitive robotics.

• 3.50 in. x 3.25 in. with 1 inch wide ends
• .163" holes spaced 1/2 an inch apart, perfect for 5/32 rivets
• 2.5mm (0.098 in.) thick, made from 6061-T6 aluminum
• .055 lbs per L gusset
• Sold in 8 packs

CAD model available

This 8 pack of 2.5mm thick L gussets can be used to assemble frames or other mechanisms commonly used in competitive robotics.

• 2.75 in. x 2.75 in. with 1 inch wide ends
• .163" holes spaced 1/2 an inch apart, perfect for 5/32 rivets
• 2.5mm (0.098 in.) thick, made from 6061-T6 aluminum
• .04 lbs per L gusset
• Sold in 8 packs

CAD model available

These aluminum 5M HTD Pulleys work great for creating belt reductions directly off the motor. Use a 15mm wide belt or two 9mm wide belts as the inside pulley teeth are 18.5mm wide. Choose either 8mm keyed bore or spline bore depending on the motor type you're using.

You asked, we listened! These 3" diameter HD (heavy-duty) solid-core Compliant Wheels are intended for manipulating objects where you need a little 'give' in your intake system. These wheels deform out of the way to allow rigid objects to be manipulated easily. This makes for high-performance intakes and internal conveyors. These wheels do not require the use of expensive hubs to be driven, thanks to their integrated high strength polycarbonate hubs - which are made from the same mold that creates our Hex Molded Spacers.

Different durometer ratings give each wheel unique characteristics. Green compliant wheels (35A durometer) are the softest and most compliant around objects, while maroon (45A) blue (50A) and black (60A) wheels are increasingly firm.

Specifications

• Bore: 0.375 in. Hex, 0.5 in. Hex, 5 mm Hex
• Color: Green, Black, Blue, Black
• Core Material: Polycarbonate
• Diameter: 3 in.
• Durometer: 35A (Green), 40A (Orange), 50A (Blue), 60A (Black)
• Tread Material: TPU
• Weight: 0.12 lbs
• Overall Width: 1 in.

Documents

Layout Print(s)

am-3946 3IN 375Hex Compliant Wheel REV3.PDF

am-3945 3IN 500Hex Compliant Wheel REV3.PDF

am-4537 3in 5mm Hex Molded Compliant Wheel.PDF

CAD File(s)

am-3946 3IN 375Hex Compliant Wheel REV 3.STEP

am-3945 3IN 500Hex Compliant Wheel REV 3.STEP

am-4537 3in 5mm Hex Molded Compliant Wheel.STEP

Tired of hex clamp collars that cost an arm and a leg? Tired of stripping out the set screw on your clamp collar? Need to add a collar in an assembly and don't want to remove everything from your hex shaft?

Me too! I've ran into all of the above scenarios multiple times building multiple robots. These collars are the holy grail -

• split so they can easily be added or removed
• lightweight 6061 aluminum
• .5 oz (.031 lbs) for one hex collar
• uses two 8-32 socket head cap screws that require a 9/64" allen wrench
• $4.00 per collar, sold in 5 packs
• anodized black for awesomeness

General Dimensions:

• When clamped on 1/2 inch hex shaft - approx 1.2 inch outer diameter
• 0.40 inches wide
• STEP file CAD Model Available

This turnbuckle chain tensioner integrates directly with #25 chain. Using a chain tool, the custom 1/4-20 link bolts replace a chain link and have the pin pushed back through it to become part of the chain. Then simply twist the center coupler to tighten or loosen the chain and tighten the jam nuts once your chain tension is perfect.

All parts are made of steel including the coupler and the custom chain link bolts are 1/4-20 thread for increased strength. One link bolt is left hand threaded and the other is right hand threaded, so take care not to mix them up if purchasing multiple sets.

Material: Steel, all of it.

This item can only be purchased in multiples of 8

These solid polyethylene (PE) closed cell foam noodles are great for building bumpers for the FIRST® Robotics Competition.

This foam outperformed all other tested options when paired with a backing of Soft Tiles. 

A rough estimation is that about 6-8 pool noodles are used for 1 set of bumpers depending on robot size. Noodles are required to be purchased in multiples of 8. Read the robot rules to ensure you understand how to create legal bumpers based on this year's rules.

Our Entrapption Stars have two bore options, making them viable parts for both FRC and FTC! This product is frequently used as intake wheels for picking up game pieces. Made from silicone, they are flexible, yet firm, allowing for the ability to pick up objects of irregular shape.

The 1/2 in. Hex Bore option is designed to be an interference fit on any 0.5 in. Hex Shaft.  This means the bore is actually 0.425 in. and it will be a tight press on, but keep the entrapption star from rotating.

The Thrifty Clamping Bearing Block provides teams a quick and easy way to capture 1.125" OD flanged bearings when mounting to 2" x 1" or 1" x 1" box extrusion. Simply drill a pass thru clearance hole and insert the bearing which is then trapped against the extrusion wall's material.

Features include -

• Clamps around 2" x 1" or 1" x 1" extrusions
• Two counterbored 10-32 holes 2" apart allow for mounting of planetary gearboxes or 2" bolt circle motors
• #8 holes on a 1.875" diameter bolt circle allow for usability in existing FRC applications
• 6061 Aluminum material anodized black

Kit includes:

- Two black anodized plates

- Four 10-32 1.5" long button head bolts

- Two 10-32 0.50" long bolts

Bearings are NOT included with this kit

Mount all the things with this latest offering from The Thrifty Bot! Finally a plate that can interface with just about any common motor or planetary gearbox in the FIRST Robotics Competition. This 4mm thick 6061 aluminum black anodized plate includes bolt mounting patterns for the following motors and planetary gearboxes:

- REV Ultraplanetary Gearbox

- REV NEO 550 & Banebots 550 Brushed motors

- VEX Versaplanetary and Versaplanetary Lite gearboxes

- AndyMark 57 Sport planetary gearboxes

- 775 series brushed motors

- REV NEO & Falcon 500 brushless motors

- Traditional Mini-CIM & CIM motors

- 4mm thick (.157") allows for stronger cantilevered applications

- 1/4" hole to hole spacing, 1/2" spacing between hole rows. Holes are .164" natively supporting #8 bolts or 5/32 rivets. Holes can be drilled out to support #10 hardware.

1 plate weight: .079 lbs

STEP CAD file available

Layout Drawing available