# The physics behind spin times, speediness, and float

**URL:** <https://forums.yoyoexpert.com/t/the-physics-behind-spin-times-speediness-and-float/368826>\
**Category:** General Yo-Yo\
**Created:** [January 24, 2023, 1:06am UTC](https://forums.yoyoexpert.com/t/the-physics-behind-spin-times-speediness-and-float/368826 "2023-01-24T01:06:48Z")\
**Posts on this page:** 1\
**Showing post:** 51

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**Author:** ![codinghorror](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/codinghorror/32/8052_2.png) [@codinghorror](https://forums.yoyoexpert.com/u/codinghorror)\
**Post date:** [July 21, 2025, 6:36am UTC](https://forums.yoyoexpert.com/t/the-physics-behind-spin-times-speediness-and-float/368826/51 "2025-07-21T06:36:49Z")

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This is amazing 🤩

Preserving these yo-yo physics pamphlets is pure gold. Thank you, everyone, and know that we support the Internet Archive in so many ways, and I know people there personally.

> **[Yo-Yo Physics : Donald W. Watson : Free Download, Borrow, and Streaming :...](https://archive.org/details/Don_Watson_YoYo_Physics1-5)**
>
> The 5 Vol. of Yo-Yo Physics pamphlets, written by yo-yo expert Don Watson, also known as Captain Yo. These pamphlets, published by Pencil Point Press, dive...

However – I think these were written **when yo-yos were all made of simple wood?** The physics have not changed, but the materials – and what we can do with them – _definitely have_. A lot.

I mean, [I like Pumping Wood](https://forums.yoyoexpert.com/t/tom-kuhns-pumping-wood-and-other-classic-yo-yo-instruction-sheets/296600), don’t get me wrong, but there’s a reason we don’t build a lot of things out of plain old wood any more..

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