Sponsors and Curators 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! If you're a manufacturer, or just a big collector and you want to help support the Museum drop me at line at chimera@yoyomuseum.com Tom Kuhn RDX prototype Exhibit #3629 Type Prototype Shape H Shape Axle Bearing Packaging None Construction Composite Response CBC Slim Pad Diameter 56 mm Width 42 mm Gap Fixed Weight 70 gm Condition Mint Number Produced 10 Date 2016 Owner Rick Brough Compare 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 Profile Side, angled, large Internals A Internals B 2005-2023 Software © David W. Hall & Grahame BaptieWright Content by David W. Hall & Rick Brough