KELVIN® Super Economy Gear Set ** A set of four different-sized gears (ranging from 12-, 20-, 30-, and 40-teeth) with holes to attach to each other with screws. Small gear fits toy motor shafts. New durable plastic material. Black, Set of 4.Works with other gears marked **. MSRP: Was: Now: $0.95 Add to Cart
KELVIN® Super Economy Gear Set, Green ** A set of [4] different-sized gears (ranging from 12-, 20-, 30-, and 40-teeth) with holes to attach to each other with screws. The large gear measures 1-5/8 in. dia. The small gear fits 2mm motor shafts. Other gears fit 3mm shaft. Durable plastic. Green... MSRP: Was: Now: $1.45 Add to Cart
Gear Pack - 15mm, 13-tooth ** Fits 1/8 in. or 3mm diameter axle. 10/pkg. Works with other gears marked **. MSRP: Was: Now: $3.95 Add to Cart
Gear Pack - 20mm, 18-tooth ** Fits 1/8 in. or 3mm diameter axle. 10/pkg. Works with other gears marked ** MSRP: Was: Now: $3.95 Add to Cart
Gear Pack - 40mm, 38-tooth ** Fits 1/8 in. or 3mm diameter axle. 10/pkg. Works with other gears marked **. MSRP: Was: Now: $4.45 Add to Cart
Gear Pack - 60mm, 58-tooth ** Fits 1/8 in. or 3mm diameter axle. 10/pkg. Works with other gears marked **. MSRP: Was: Now: $5.95 Add to Cart
Advanced Gear Set Use the Gears to Count Movement with Sensors! Evenly spaced holes near the edge, which can be used with a slotted optocoupler to measure velocity, acceleration or distance of the gear or vehicle. Holes can also be used to attach the gear to a wheel,... MSRP: Was: Now: $2.45 Add to Cart
Slotted Opticoupler For use with the Advanced Gear Set (391128). Can be used with your circuit to measure the gear rotation speed. 5V DC. MSRP: Was: Now: $3.95 Add to Cart
Deluxe Gear Set ** Deluxe assortment of gears for power transmission. Small gear and worm gears fit a toy motor. The Deluxe Gear Set Includes: [4] 10-Tooth Gears [4] 20-Tooth Gears [4] 30-Tooth Gears [4] 40-Tooth Gears [4] 50-Tooth Gears [2] 1/4 in. dia. Rack and Pinion... MSRP: Was: Now: $46.95 Add to Cart
KELVIN® Inertia Welder Make your own gear combination for all your design needs. Includes a special KELVIN® jig, class pack of gears to start welding and a PowerPoint presentation that explains how it works. Requires drill stand or drill press and teacher supervision. MSRP: Was: Now: $145.00 Add to Cart
KELVIN® Gear Jig KELVIN®'s revolutionary jig design allows you to design different combinations of gears on each side. On one side, the combination is 4-, 8- or 16-teeth gears. On the other side, the combination is 6-, 12- or 24-teeth gears. This jig is ideal for... MSRP: Was: Now: $9.95 Add to Cart
KELVIN® Worm Gear This versatile worm gear can be used for a variety of projects. It features two hole sizes. One side fits a 2mm motor shaft. The other side fits a 1/8 in. axle. Black. 10/pkg.Does not include motor and gear assembly shown.Works with 841219. MSRP: Was: Now: $9.95 Add to Cart
