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    Grasshopper Nut for Battery Terminals

    Be the first to review this product

    The Grasshopper nut, produced with the help of James Cole-Henry from FRC team 95, The Grasshoppers, is an innovative battery solution to increase the reliability of battery terminal connections.

    MFR Part #: TTB-0071
    $15.40
    Availability: 79 in stock

    Kit contents: 

    • x2 Grasshopper Nuts
    • x2 PEM Nuts, pressed into the sheet metal Grasshopper Nut
    • x2 Nordlock washers
    • 10-32 x 5/8" long hex head bolt

    The Grasshopper Nut allows for a few things:

    • The aluminum nut plate provides a second frictional/mechanical interlock between the battery terminals. This engagement is so good that the potting around the battery tab will crack before the joint is loosened. No more loose battery lugs!
    • We recommend installing the nuts using a torque wrench for maximum effectiveness - install to 70 in-lbs (5.83 ft-lbs).
    • The threads and bolt head/lock washer are mechanically coupled, so a single Nord lockwasher can lock the whole assembly together exactly as the washer was designed to do
    • The extra material, flange head bolt, and PEM nut create a broad, even, clamping load on the terminal, reducing the chances of cupping and deformation that will reduce the electrical efficacy of the terminal
    Write your own review
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    • Gauge: 06 AWG
    • Hole Size For Stud: 0.25 in.
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    The Sushi Roller Intake Wheels are an excellent choice for robot intakes, internal conveyors, feeder mechanisms, or anywhere you need a durable, compact and grippy roller. These rollers are made with a robust polycarbonate hex bore hub, so no external hub is necessary - just slide them onto a hex shaft, constrain them axially and you are good to go. Available in a range of durometers for a wide variety of applications, these cute little rollers are great for getting a grip on things!

     

    Specifications

    • Bore: 0.5 in. Hex, 5 mm Hex, 0.375 in. Hex
    • Core Material: Polycarbonate
    • Diameter: 1 in.
    • Durometer: 35A (Green), 40A (Orange), 50A (Blue), 60A (Black)
    • Tread Material: TPU
    • Weight: 0.022 lbs
    • Width: 1 in.
    Picture of 2" Stealth Wheel, 1/2 Hex Bore, Orange, 40 Durometer (am-3155_orange)

    2" Stealth Wheel, 1/2 Hex Bore, Orange, 40 Durometer (am-3155_orange)

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    The inside black portion of this wheel is made from molded polycarbonate plastic. The outer tread is TPU (Thermoplastic PolyUrethane). This robust but lightweight wheel provides good traction on carpet and soft tiles. Stealth wheels are the perfect drive wheel for smaller (<50 lb.) robots, or for intakes and other auxiliary robot mechanisms. These wheels are available in a variety of bores and durometers. 4 in. Stealth Wheels feature a 6 bolt pattern on a 1.875 in. bolt circle for mounting sprockets, hubs, and gears. Nub Bore Stealth Wheels feature a 4 bolt pattern on a 16 mm bolt circle found in most FIRST Tech Challenge building systems. The lower the durometer the softer the wheel is, this makes it wear away faster, but also makes it more grippy.

    Product Usage:
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    Specifications

    • Bore: 1/2 in. Hex, 3/8 in. Hex, Nub Bore, 5 mm Hex
    • Diameter: 2 in., 4 in.
    • Durometer: 35A (Green), ⠀40A (Orange), ⠀50A (Blue), ⠀60A (Black), ⠀80A (Gray)
    • Hole Pattern: Qty 4 3.5 mm Holes on a 16 mm Circle for 8 mm bore wheels
    • Material: TPU, Polycarbonate
    • Weight: 0.23lb, 0.1lb
    • Width: 1 in.

    Documents

    Layout Print(s)

    am-3664 2in 5mm Hex Stealth Wheel REV4.PDF

    am-3156 2IN 8mm Stealth Wheel REV3.PDF

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    Specifications

     

    • Bore: 0.375 in. Hex, 0.50 in. Hex, 5 mm Hex
    • Core Material: Polycarbonate
    • Diameter: 2.25 in.
    • Durometer: 35A (Green), 40A (Orange), 50A (Blue), 60A (Black)
    • Tread Material: TPU
    • Weight: 0.08 lbs
    • Width: 1 in.

     

    Documents

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    • Core Material: Polycarbonate
    • Diameter: 2.25 in.
    • Durometer: 35A (Green), 40A (Orange), 50A (Blue), 60A (Black)
    • Tread Material: TPU
    • Weight: 0.08 lbs
    • Width: 1 in.

     

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    Specifications

     

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    • Diameter: 2.25 in.
    • Durometer: 35A (Green), 40A (Orange), 50A (Blue), 60A (Black)
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    • Weight: 0.08 lbs
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    Documents

     

    Layout Print(s)

    am-3949 2.25IN 500Hex HD Compliant Wheel REV3.PDF

    am-3950 2.25IN 375Hex HD Compliant Wheel REV3.PDF

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    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.



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    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)

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    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.

     

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    Kit contents: 

    • x2 Grasshopper Nuts
    • x2 PEM Nuts, pressed into the sheet metal Grasshopper Nut
    • x2 Nordlock washers
    • 10-32 x 5/8" long hex head bolt

    The Grasshopper Nut allows for a few things:

    • The aluminum nut plate provides a second frictional/mechanical interlock between the battery terminals. This engagement is so good that the potting around the battery tab will crack before the joint is loosened. No more loose battery lugs!
    • We recommend installing the nuts using a torque wrench for maximum effectiveness - install to 70 in-lbs (5.83 ft-lbs).
    • The threads and bolt head/lock washer are mechanically coupled, so a single Nord lockwasher can lock the whole assembly together exactly as the washer was designed to do
    • The extra material, flange head bolt, and PEM nut create a broad, even, clamping load on the terminal, reducing the chances of cupping and deformation that will reduce the electrical efficacy of the terminal
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    Specifications

    • Gauge: 06 AWG
    • Hole Size For Stud: 0.25 in.
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    Specifications

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    • Diameter: 1 in.
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    • Width: 1 in.
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    Product Usage:
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    • Hole Pattern: Qty 4 3.5 mm Holes on a 16 mm Circle for 8 mm bore wheels
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    Documents

    Layout Print(s)

    am-3664 2in 5mm Hex Stealth Wheel REV4.PDF

    am-3156 2IN 8mm Stealth Wheel REV3.PDF

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    Specifications

     

    • Bore: 0.375 in. Hex, 0.50 in. Hex, 5 mm Hex
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    • Diameter: 2.25 in.
    • Durometer: 35A (Green), 40A (Orange), 50A (Blue), 60A (Black)
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    • Weight: 0.08 lbs
    • Width: 1 in.

     

    Documents

    Layout Print(s)

    am-3949 2.25IN 500Hex HD Compliant Wheel REV3.PDF

    am-3950 2.25IN 375Hex HD Compliant Wheel REV3.PDF

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    CAD File(s)

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    am-3950 2.25IN 375Hex HD Compliant Wheel.STEP

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    Compliant wheels are not intended for moving robots, but moving objects. Compliant wheels give way to allow rigid objects to be manipulated easily. A line of multiple wheels on a driven hex axle creates a very effective roller that ignores variations in the objects being driven. This makes for high-performance intakes and internal conveyors.



    Different durometer ratings give each wheel unique characteristics. Green wheels (35A durometer) are the softest and most compliant around objects, maroon (45A), blue (50A), and black (60A) wheels are increasingly firm. The increased firmness also allows the latter wheels to carry a higher RPM rating. Check out the downloads tab for a chart showing wheels and their maximum RPM.

     

    Specifications

    • Bore: 0.375 in. Hex, 0.50 in. Hex, 5 mm Hex
    • Core Material: Polycarbonate
    • Diameter: 2.25 in.
    • Durometer: 35A (Green), 40A (Orange), 50A (Blue), 60A (Black)
    • Tread Material: TPU
    • Weight: 0.08 lbs
    • Width: 1 in.

     

    Documents

    Layout Print(s)

    am-3949 2.25IN 500Hex HD Compliant Wheel REV3.PDF

    am-3950 2.25IN 375Hex HD Compliant Wheel REV3.PDF

    am-4536 2.25in HD 5mm Hex Molded Compliant Wheel.PDF

    CAD File(s)

    am-3949 2.25IN 500Hex HD Compliant Wheel.STEP

    am-3950 2.25IN 375Hex HD Compliant Wheel.STEP

    am-4536 2IN OverMolded 5mm Hex Compliant Wheel.STEP

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