KELVIN® Cranes & Catapults
  • KELVIN® Creative Crane Kit

    KELVIN® Creative Crane Kit

    Students will design and build a lightweight crane that creatively lifts a variable load (P) from a structure a minimum vertical height (V) of 18 inches with a minimum horizontal (H) clearance distance of 9 inches from the edge of the tower or footprint...

    $24.95
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  • KELVIN® Creative Crane Kit w/ StiKutter™

    KELVIN® Creative Crane Kit w/ StiKutter™

    Comes with KELVIN® StiKutter™. Students will design and build a lightweight crane that creatively lifts a variable load (P) from a structure a minimum vertical height (V) of 18 inches with a minimum horizontal (H) clearance distance of 9 inches...

    $29.95
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  • KELVIN® Creative Crane Team Pack

    KELVIN® Creative Crane Team Pack

    Enough for six teams. Students will design and build a lightweight crane that creatively lifts a variable load (P) from a structure a minimum vertical height (V) of 18 inches with a minimum horizontal (H) clearance distance of 9 inches from the edge of...

    $66.00
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  • KELVIN® Creative Crane Hardware Team Pack

    KELVIN® Creative Crane Hardware Team Pack

    Students will design and build a lightweight crane that creatively lifts a variable load (P) from a structure a minimum vertical height (V) of 18 inches with a minimum horizontal (H) clearance distance of 9 inches from the edge of the tower or footprint...

    $59.95
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  • KELVIN® Creative Crane Pulley

    KELVIN® Creative Crane Pulley

    This pulley will fit a 2mm motor shaft or a 1/8 in. dia. axle. The inside width is 3/8 in. The overall width is 0.94 in. The inner dia. is 0.28 in. and the outer dia. is 1-1/2 in. Has holes in side wall to thread string through. 10/pkg.

    $9.95
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  • KELVIN® Tower Crane Kit

    KELVIN® Tower Crane Kit

    The Tower Crane is different from the Creative Crane™ as the power unit and motor are positioned on the boom making for easier construction. In this activity, groups of students are asked to use the Engineering Design Process to design, build and test a...

    $14.95
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  • KELVIN® Tower Crane Team Pack

    KELVIN® Tower Crane Team Pack

    Bulk Pack of 10 - As Low As $12.50 Per Kit! The Tower Crane is different from the Creative Crane—the power unit and motor are positioned on the boom making for easier construction. In this activity, groups of students are asked to use the...

    $125.00
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  • KELVIN® Swing Unit Kit

    KELVIN® Swing Unit Kit

    Besides lifting, a crane may be required to move a load from one point to another. With this kit, students can design a mechanism to allow theboom of their tower crane to swing so that it can lift a load from one spot and place it in another. The Swing...

    $19.95
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  • KELVIN® Gear Box & Pulley Activity

    KELVIN® Gear Box & Pulley Activity

    Learning about gears and what they can be used for (gearing for speed or for power) is an important aspect of many crane and vehicle activities and this kit enables students to do just that. Kit includes: Gear Set, Pulley Set, Creative Crane Pulley,...

    $9.95
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  • KELVIN® Gear Box & Pulley Activity Bulk Pack

    KELVIN® Gear Box & Pulley Activity Bulk Pack

    Bulk Pack of 20 - As Low As $6.25 Per Kit! Learning about gears and what they can be used for (gearing for speed or for power) is an important aspect of many crane and vehicle activities and this kit enables students to do just that. Each kit includes:...

    $125.00
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  • KELVIN® Kre8® Catapult

    KELVIN® Kre8® Catapult

    Mangonel-type catapults (or a Ballista) were used to fling objects over castle walls for defense in medieval times. All aspects of assembly and performance of this catapult are easy and fast to adjust:- the amount of leverage the throwing arm has, the...

    $9.95
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  • KELVIN® Kre8® Catapult Bulk Pack

    KELVIN® Kre8® Catapult Bulk Pack

    Bulk Pack of 20 - As Low As $7.50 Per Kit! Mangonel-type catapults (or a Ballista) were used to fling objects over castle walls for defense in medieval times. All aspects of assembly and performance of this catapult are easy and fast to adjust:- the...

    $150.00
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  • KELVIN® Adjustable Stop Catapult

    KELVIN® Adjustable Stop Catapult

    Allow your students through hands-on discovery to learn the fundamentals of force, energy, simple machines, Newton's Laws, trajectory and other science and math concepts with KELVIN® Adjustable Stop Catapult Kit. Simple assembly has this fun activity...

    $14.95
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  • KELVIN® Magnetic Repulsion Adjustable Stop Catapult

    KELVIN® Magnetic Repulsion Adjustable Stop Catapult

    Works with or without magnets. Simple assembly has this fun activity ready to test in a short time. Learn the fundamentals of force, energy, simple machines, Newton's Laws, trajectory and other science and math concepts. The moving lever arm is powered...

    $16.95
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  • KELVIN® Catapult Kit

    KELVIN® Catapult Kit

    With this kit, students can either design their own catapult or build one from the plans that are included. This kit replicates an ancient catapult in which tension could be increased or decreased to alter the tossing distance. Requires hand tools...

    $14.95
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  • KELVIN® Catapult Bulk Pack

    KELVIN® Catapult Bulk Pack

    Bulk Pack of 10 - As Low As $12.50 Per Kit! Students can either design their own catapult or build one from the plans that are included. The design replicates an ancient catapult in which tension could be increased or decreased to alter the tossing...

    $125.00
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  • KELVIN® Build Your Own® Small Catapult

    KELVIN® Build Your Own® Small Catapult

    Design and build a small catapult with a 7-1/2 in. long base. The swing arm can be made up to 12 in. long. This kit weighs 0.3 lbs. Determine which catapult is capable of launching ping pong balls the farthest or the highest. An additional challenge is...

    $9.95
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  • KELVIN® Build Your Own® Large Catapult

    KELVIN® Build Your Own® Large Catapult

    Using this kit, students can build catapults in various sizes, depending on their designs. The swing arm can be up to 24 in. long. The base is 18 in. long and 2-1/2 in. wide. The kit weighs 0.8 lbs. Students can then see which catapult is capable of...

    $11.95
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