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The Museum of Yo-Yo History is a labor of love, and we would not be able to stay up-to-date with exhibits without the support of our sponsors and curators. Big thanks go to One Drop Design and Duncan for supplying us with their latest models, YoYoExpert for their help and support, and to Cody Orr, TotalArtist and YoYoBrothers™ for allowing us to use their collections!

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Tom Kuhn RDX prototype
Exhibit #3629
ShapeH Shape
ResponseCBC Slim Pad
Diameter56 mm
Width42 mm
Weight70 gm
Number Produced10
OwnerRick Brough

The Tom Kuhn RDX prototype from sometime in 2016. Made by CYYC (Chico Yo-Yo Company) out of Chico, California for Tom Kuhn Yo-Yos. Unfortunately, the yo-yo was never put into production because the makers could not get the yo-yo design to be properly balanced. (Or, did the inner convex aluminum hubs violate Duncan's own patent pending MOD spacers from 2011?)

The prototype in this exhibit is interesting. It uses a projecting, convex inner aluminum hub with response pads and a ball bearing axle. The entire inner hub assembly was then combined with maple body halves that had outer rim weight rings installed.

The entire "greeked" design on the outer face -- with the exception of the Tom Kuhn infinity logo -- was laser printed on paper and held in place by the weight ring. Came with an extra set of paper logos that had an alternate design on them. Ten prototypes -- each one apparently slightly different from the other -- were supposedly made.
Other Views
Side, angled, large
Internals A
Internals B

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