Uploaded July 2025 | Updated September 2026, 3 weeks ago

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Math is the language of the universe! Think of all the amazing things you can do with math: Travel to Space! Figure out when two trains will pass each other. Quickly determine the size of your rear sprockets?

Sure! Math can do that. Calvin will show you how with his BIG DUMB MATH TRICK.

➤ Fix It:
Did you know that Park Tool is the #1 resource for bicycle repair education?
• Visit our YouTube Channel: youtube.com/parktool
• Visit the Repair Help section of Parktool.com: parktool.com/repairhelp
• Check out The Big Blue Book of Bicycle Repair: parktool.com/product/big-blue-book-of-bicycle-repair-4th-edition-bbb-4

➤ About Park Tool:
Since our founding in 1963, Park Tool has been the leading name in bicycle tools. Our YouTube channel is an extension of our mission to be the ultimate resource for mechanics and riders of all skill levels. Here you will find comprehensive repair help tutorials for a wide range of components and processes, as well as troubleshooting guides, tips and tricks, and information on the latest Park Tool products.

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