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Item No:70110
Educational Construction Series (Units) No.110
4-SPEED CRANK AXLE GEARBOX
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This assembly kit gearbox lets you switch between 4 gear ratios by reassembling its gears. By employing a worm gear as the pinion for the motor, it gives considerable torque at lower rotation speeds, and in its highest gear ratio it provides a mere 2 RPM. Two crank arms are included for when you want to convert motor rotation into lateral motion. Reinforced plastic gears and case make for smooth operation, and cement is not required for assembly. ★Length: 74mm, attachment width: 30mm, height: 33mm ★Output shaft length: 100mm ★126:1, 441:1, 1543:1 and 5402:1 gear ratios ★Motor included.
Assembly instruction manual (PDF)
Assembly instruction manual (PDF)
![](<img src="//d7z22c0gz59ng.cloudfront.net/cms/img/usr/item/7/70110/70110_4c1.jpg" />
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![](<img src="//d7z22c0gz59ng.cloudfront.net/cms/img/usr/item/7/70110/70110_4c2.jpg" />
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