# kk vs center trac

**URL:** https://forums.yoyoexpert.com/t/kk-vs-center-trac/9599
**Category:** General Yo-Yo
**Created:** [December 27, 2009, 7:43am UTC](https://forums.yoyoexpert.com/t/kk-vs-center-trac/9599 "2009-12-27T07:43:24Z")
**Posts on this page:** 5
**Page:** 1

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### Author: ![kukumalu](https://avatars.discourse-cdn.com/v4/letter/k/b38774/32.png) [@kukumalu](https://forums.yoyoexpert.com/u/kukumalu)
#### Post date: [December 27, 2009, 7:43am UTC](https://forums.yoyoexpert.com/t/kk-vs-center-trac/9599/1 "2009-12-27T07:43:24Z")

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i use a standard steel kk bearing and i’ve noticed that the strings all gather at the center (obviously), but for example when you roll the yoyo towards your non throwhand in a say… trapeze, the string just kinda coils up and snags. i hope you guys understand what i mean.

will a center trac solve this problem?

anyways please offer comparisons and personal opinions on which is better.

thanks!

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### Author: ![Shisaki417](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/shisaki417/32/150_2.png) [@Shisaki417](https://forums.yoyoexpert.com/u/Shisaki417)
#### Post date: [December 27, 2009, 8:18am UTC](https://forums.yoyoexpert.com/t/kk-vs-center-trac/9599/2 "2009-12-27T08:18:08Z")

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The konkave forces string in the center so it’s alot easier to snap back at you. A ccenter track will still do that but not as easiely since it is flat in the center leaving more space for the strings.

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### Author: ![newbee](https://avatars.discourse-cdn.com/v4/letter/n/5f8ce5/32.png) [@newbee](https://forums.yoyoexpert.com/u/newbee)
#### Post date: [December 27, 2009, 10:07am UTC](https://forums.yoyoexpert.com/t/kk-vs-center-trac/9599/3 "2009-12-27T10:07:49Z")

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well i haven’t use this bearings yet but i think a center trac beaing allows more string layers because of its flat center.and I agree with shisaki.

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### Author: ![Pheenix](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/pheenix/32/65_2.png) [@Pheenix](https://forums.yoyoexpert.com/u/Pheenix)
#### Post date: [December 27, 2009, 11:34am UTC](https://forums.yoyoexpert.com/t/kk-vs-center-trac/9599/4 "2009-12-27T11:34:48Z")

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Flat bearing.

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### Author: ![titanium221](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/titanium221/32/174_2.png) [@titanium221](https://forums.yoyoexpert.com/u/titanium221)
#### Post date: [December 27, 2009, 12:36pm UTC](https://forums.yoyoexpert.com/t/kk-vs-center-trac/9599/5 "2009-12-27T12:36:53Z")

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i dont think this is the shape of your bearing, it is probably the lube or response of the yoyo. I have a concave, and that doesnt happen. Make sure the bearing spins freely for a good long time and even try out some other bearings in the yoyo to see if the response changes the play.  
Hope that helps