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CAT # GR-84 (2 Reviews) Write a Review

$11.95 each
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Product Description
Velleman Kits # KNS7. Fun with gears and motors. Small 3 Vdc motor, metal bracket and axles, and an assortment of small plastic gears and collars to produce a gear train of various ratios.

Note: Kits cannot be returned or exchanged once assembly has begun.
WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to
(This item was manufactured prior to August 31st, 2018)

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Customer Reviews (2 Reviews)

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Reviewer: from Georgia USA

Including the mounting tabs, it is 44.5 mm wide by 68 mm long. The diameter of the drive shaft, which is the one with the cranks in the picture, is 3 mm. The two gear sets included in the kit result in either 42 or 200 RPM. It is a bit noisy.

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Reviewer: from Hayward, CA

What are the approximate dimensions of the motor and gear train?

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