File:OPL-fig-idle-wheel-gearing.svg

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Summary

describes the need for idle wheels in Maxwell's model

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	02:11, 9 September 2026		720 × 380 (4 KB)	BFP Rauch (talk \| contribs)	describes the need for idle wheels in Maxwell's model

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Short title	The idle wheel
Image title	Two wheels intended to turn the same way cannot touch directly, because their touching surfaces would move oppositely. A small wheel placed between them, an idle wheel, lets both turn the same way. If the idle wheel's centre is free to move, its velocity is the half sum of the surface velocities of the two wheels it separates.
Width	720
Height	380