# Yoyofactory 400 series shuttles help

**URL:** <https://forums.yoyoexpert.com/t/yoyofactory-400-series-shuttles-help/303282>\
**Category:** Yo-Yo Mods and Maintenance\
**Created:** [June 3, 2019, 10:22pm UTC](https://forums.yoyoexpert.com/t/yoyofactory-400-series-shuttles-help/303282 "2019-06-03T22:22:04Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Breadroid](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/breadroid/32/52505_2.png) [@Breadroid](https://forums.yoyoexpert.com/u/Breadroid)\
**Post date:** [June 3, 2019, 10:22pm UTC](https://forums.yoyoexpert.com/t/yoyofactory-400-series-shuttles-help/303282/1 "2019-06-03T22:22:04Z")

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So I was wondering if the Yoyofactory velocity shuttles were compatible with older Yoyofactory yoyos such as the speed dial or the adjust-o-matic. I just realized that the yoyo I just bought was not a Yoyofactory 401sd, but a Yoyofactory Adjust-o-matic. The dials seems to be a bit stuck and I can’t find much documentation on how these work. It currently is at a setting so it is responsive, but I want to make it unresponsive. Any help or info would be appreciated.

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**Author:** ![YoYoExpertGarrett](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/yoyoexpertgarrett/32/1543_2.png) [@YoYoExpertGarrett](https://forums.yoyoexpert.com/u/YoYoExpertGarrett)\
**Post date:** [June 3, 2019, 10:36pm UTC](https://forums.yoyoexpert.com/t/yoyofactory-400-series-shuttles-help/303282/2 "2019-06-03T22:36:57Z")

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@yyfben2.deactivated should be able to help you out.

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**Author:** ![YOHANS](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/yohans/32/40176_2.png) [@YOHANS](https://forums.yoyoexpert.com/u/YOHANS)\
**Post date:** [June 4, 2019, 4:51pm UTC](https://forums.yoyoexpert.com/t/yoyofactory-400-series-shuttles-help/303282/3 "2019-06-04T16:51:40Z")

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There were variations of tolerance along the way. Also if I remember correctly we changed the direction of adjustment on the early designs to make it more intuitive.

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**Author:** ![Breadroid](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/breadroid/32/52505_2.png) [@Breadroid](https://forums.yoyoexpert.com/u/Breadroid)\
**Post date:** [June 6, 2019, 10:52pm UTC](https://forums.yoyoexpert.com/t/yoyofactory-400-series-shuttles-help/303282/4 "2019-06-06T22:52:18Z")

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Edit: Bought a YYF velocity yesterday just to test out my hypothesis. Well, the parts are the same dimensions, but now I see that the adjust-o-matic’s are really stubborn. Good to know that this yoyo can still take the newer velocity’s parts (once I somehow get the old parts off that is).