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Massive Hobby Parts Sellout!

Hobbyparts.com.au is selling off all hobby specific items at extremely reduced pricing. Please browse the website for special pricing on all items. Small Parts and Bearings will be taking over any non deleted ranges.


12 - Skate - Hobby
Hobby and Engineering Supplies

Skate Bearings - Question 12

I have read something about a skate’s wheels spinning faster than an Indy Car, and they even "prove" it with a mathematical formula - Is this true?

Yes. A skates wheels can easily get up to 2-3 times the RPM (revolutions per minute) of an Indy Car wheels. We will bet that what you read did not mention that this is still well within the capabilities of the 608 bearing. Speed is not one of the problems faced by skate bearings - lack of lubrication, contamination, moisture and the unavoidable shock loads associated with skating are the biggest problems. Be very wary of anyone trying to tell you that Skating is a high speed application for a bearing - it isn’t.

An example of how non technically minded these marketing people are is that the "Indy Car Formula" that we were supplied with shows forward momentum being the product of the Radius of the Wheel and RPM. It only takes a little logic to realise that one turn of a wheel does not move the skate forward by the distance of its radius but rather by its circumference. However, using this incorrect formula in the above analogy will still get you the relationship of the skate wheel speed to that of the Indy Car. Whilst the formula is incorrect, the analogy is still correct - albeit irrelevant.

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You can purchase online at Hobby and Engineering Supplies Online.


For a huge range of bearings online please visit the Bearing Shop Online website.

The Small Parts and Bearings website has a much larger range of engineering supplies.

For the best range of miniature and small bearings please try the Miniature Bearings Australia website. Miniature Bearings Australia also list a large variety of miniature engineering products.



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Hobby and Engineering Supplies offers 2327 products in 246 categories including special sellout prices on all remaining RC spare parts, balsa wood, kites and more. - see the full listing in the Online Catalogue. We have excellent Freight Rates within Australia and worldwide. We offer a choice of delivery with a signature required, or cheaper options with no signature required. The no signature required options are at the customer’s risk once the goods leave our store.

Using the links throughout this site you will find extensive information including catalogues, technical data, and other product specific information. We sell our products worldwide through our online store and our overseas freight rates are competitive for fully traceable courier delivery.

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