# Need help. Designing a yoyo.

**URL:** <https://forums.yoyoexpert.com/t/need-help-designing-a-yoyo/28263>\
**Category:** Yo-Yo Mods and Maintenance\
**Created:** [July 21, 2011, 6:35pm UTC](https://forums.yoyoexpert.com/t/need-help-designing-a-yoyo/28263 "2011-07-21T18:35:03Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![888alltheway](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/888alltheway/32/798_2.png) [@888alltheway](https://forums.yoyoexpert.com/u/888alltheway)\
**Post date:** [July 21, 2011, 6:35pm UTC](https://forums.yoyoexpert.com/t/need-help-designing-a-yoyo/28263/1 "2011-07-21T18:35:03Z")

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Like the title says, I need help. I need help getting the dimentions for a bearing seat. I’m getting it anno’d in a solid color. I need dimentions in mm’s for the outer diameter, inner diameter, and the actual thing that the bearing sits on. Any recommendations for an axle width and length would also be appreciated. I also need suggestions on a bearing supplier and maybe an axle supplier.

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**Author:** ![kingroxas206](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/kingroxas206/32/678_2.png) [@kingroxas206](https://forums.yoyoexpert.com/u/kingroxas206)\
**Post date:** [July 21, 2011, 6:57pm UTC](https://forums.yoyoexpert.com/t/need-help-designing-a-yoyo/28263/2 "2011-07-21T18:57:56Z")

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well it all depends on the yoyo your trying to make

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**Author:** ![jhb8426](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/jhb8426/32/631_2.png) [@jhb8426](https://forums.yoyoexpert.com/u/jhb8426)\
**Post date:** [July 22, 2011, 1:09am UTC](https://forums.yoyoexpert.com/t/need-help-designing-a-yoyo/28263/3 "2011-07-22T01:09:08Z")

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Axle size - 10x24 set screw. Length really depends on your shell design and bearing size. Figure you want 1/4 inch threaded into the shell, and whatever you need for the bearing.

So let’s say a 10x24x34 in. long set screw.  
A common metric size is 4mm x.7mm pitch, 16mm long (actual length to suit).

Bearing seat dimensions really depend on the bearing you pick. It’s up to you to decide the tolerances.

Bearing supplier:  
[http://www.vxb.com/page/bearings/CTGY/YoYo](http://www.vxb.com/page/bearings/CTGY/YoYo)  
[http://www.bocabearings.com/](http://www.bocabearings.com/)

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**Author:** ![888alltheway](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/888alltheway/32/798_2.png) [@888alltheway](https://forums.yoyoexpert.com/u/888alltheway)\
**Post date:** [July 22, 2011, 2:28am UTC](https://forums.yoyoexpert.com/t/need-help-designing-a-yoyo/28263/4 "2011-07-22T02:28:50Z")

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Ahhh…thanks guys. I’m designing a throw with a size C bearing. I need some bearing seat dimentions that won’t make the seat too loose so that it’ll wobble, but not too tight that it won’t fit.

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**Author:** ![jhb8426](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/jhb8426/32/631_2.png) [@jhb8426](https://forums.yoyoexpert.com/u/jhb8426)\
**Post date:** [July 22, 2011, 2:40am UTC](https://forums.yoyoexpert.com/t/need-help-designing-a-yoyo/28263/5 "2011-07-22T02:40:28Z")

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Copy somebody else’s seat dimensions. Just keep in mind that the anodizing is going to add to the dimensions a bit. That is where you will need to know a bit more about the whole process. Anodizing forms a coating on the surface.

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**Author:** ![888alltheway](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/888alltheway/32/798_2.png) [@888alltheway](https://forums.yoyoexpert.com/u/888alltheway)\
**Post date:** [July 22, 2011, 2:45am UTC](https://forums.yoyoexpert.com/t/need-help-designing-a-yoyo/28263/6 "2011-07-22T02:45:13Z")

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Thanks dude, you’re great.