# One Drop Flat Bearings Are Outdated: Change My Mind **URL:** \ **Category:** Yo-Yo Mods and Maintenance\ **Created:** [May 17, 2019, 3:57pm UTC](https://forums.yoyoexpert.com/t/one-drop-flat-bearings-are-outdated-change-my-mind/302430 "2019-05-17T15:57:04Z")\ **Posts on this page:** 20\ **Page:** 19
**Author:** ![andy569](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/andy569/32/1256_2.png) [@andy569](https://forums.yoyoexpert.com/u/andy569)\ **Post date:** [August 12, 2019, 10:22pm UTC](https://forums.yoyoexpert.com/t/one-drop-flat-bearings-are-outdated-change-my-mind/302430/362 "2019-08-12T22:22:34Z")
I think you would like the Top Deck Just remember to swap out the flat bearing :wink: ---
**Author:** ![MoosaK](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/moosak/32/116955_2.png) [@MoosaK](https://forums.yoyoexpert.com/u/MoosaK)\ **Post date:** [August 12, 2019, 10:24pm UTC](https://forums.yoyoexpert.com/t/one-drop-flat-bearings-are-outdated-change-my-mind/302430/363 "2019-08-12T22:24:06Z")
Oops, I thought it said May ’17 ---
**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**Post date:** [August 12, 2019, 10:25pm UTC](https://forums.yoyoexpert.com/t/one-drop-flat-bearings-are-outdated-change-my-mind/302430/364 "2019-08-12T22:25:38Z")
You can click or tap the date at upper right to expand it. ---
**Author:** ![Myk\_Myk](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/myk_myk/32/63087_2.png) [@Myk\_Myk](https://forums.yoyoexpert.com/u/Myk_Myk)\ **Post date:** [August 12, 2019, 10:33pm UTC](https://forums.yoyoexpert.com/t/one-drop-flat-bearings-are-outdated-change-my-mind/302430/365 "2019-08-12T22:33:59Z")
> [@codinghorror](#): > > A-RT ships all their stuff with the fancy Japanese DS bearing. Which is effectively a CT. This is not so! They are closer to a KK than a CT in shape. They softly center the string, like a KK. > **[Yoyorecreation DS Bearing](https://shop.yoyoexpert.com/collections/yoyorecreation/products/yoyorecreation-ds-yoyo-bearing?_pos=1&_sid=ca4230e6f&_ss=r&variant=18873671812)** > > Yoyorecreation is known for making some of the best performing yo-yos on the market, and they designed their new DS Bearing to the same standards of precision and perfection as every one of their yo-yos.The DS (Double Straight) Bearing is a double... ---
**Author:** ![da5id](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/da5id/32/48214_2.png) [@da5id](https://forums.yoyoexpert.com/u/da5id)\ **Post date:** [August 12, 2019, 10:35pm UTC](https://forums.yoyoexpert.com/t/one-drop-flat-bearings-are-outdated-change-my-mind/302430/366 "2019-08-12T22:35:21Z")
Does someone have a list of all the string nudging bearings? ---
**Author:** ![andy569](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/andy569/32/1256_2.png) [@andy569](https://forums.yoyoexpert.com/u/andy569)\ **Post date:** [August 12, 2019, 10:37pm UTC](https://forums.yoyoexpert.com/t/one-drop-flat-bearings-are-outdated-change-my-mind/302430/367 "2019-08-12T22:37:32Z")
CT KK V(Buddha whipple) Double step/multi step(Pixel, 5-cut, DS) Grooved(Crucial) Wing(Terrapin) [if you count that] ---
**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:** [August 12, 2019, 10:38pm UTC](https://forums.yoyoexpert.com/t/one-drop-flat-bearings-are-outdated-change-my-mind/302430/368 "2019-08-12T22:38:07Z")
I have a whole topic about it. This is the topic that people hated so much on Reddit (when it was posted there) they harangued me until I left. > [@History of / differences between different concave bearings?](https://forums.yoyoexpert.com/t/history-of-differences-between-different-concave-bearings/290973): > > [image] OK so there are a variety of concave bearing shapes: obviously, pure smooth concave, the “O” of bearing shapes if you will concave but with a center channel indent for the string angled down to the middle, the “V” of bearing shapes if you will the most common type: flat in the center, but the sides angle up, the “H” of bearing shapes if you will. I’d say 80% of the “concave” bearings I encounter are this type the least common type, a combination of V and H, angled steps i… ---
**Author:** ![Myk\_Myk](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/myk_myk/32/63087_2.png) [@Myk\_Myk](https://forums.yoyoexpert.com/u/Myk_Myk)\ **Post date:** [August 12, 2019, 10:38pm UTC](https://forums.yoyoexpert.com/t/one-drop-flat-bearings-are-outdated-change-my-mind/302430/369 "2019-08-12T22:38:22Z")
I think I’ll create a bearing called “The Nudge”! ---
**Author:** ![da5id](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/da5id/32/48214_2.png) [@da5id](https://forums.yoyoexpert.com/u/da5id)\ **Post date:** [August 12, 2019, 10:39pm UTC](https://forums.yoyoexpert.com/t/one-drop-flat-bearings-are-outdated-change-my-mind/302430/370 "2019-08-12T22:39:40Z")
Well I use nudge because apparently “centering” isn’t accurate. I’m not an expert though. ---
**Author:** ![Myk\_Myk](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/myk_myk/32/63087_2.png) [@Myk\_Myk](https://forums.yoyoexpert.com/u/Myk_Myk)\ **Post date:** [August 12, 2019, 10:41pm UTC](https://forums.yoyoexpert.com/t/one-drop-flat-bearings-are-outdated-change-my-mind/302430/371 "2019-08-12T22:41:07Z")
I know, but it’s great name. Hasn’t Frank’s patent expired by now, or no? ---
**Author:** ![da5id](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/da5id/32/48214_2.png) [@da5id](https://forums.yoyoexpert.com/u/da5id)\ **Post date:** [August 12, 2019, 10:41pm UTC](https://forums.yoyoexpert.com/t/one-drop-flat-bearings-are-outdated-change-my-mind/302430/372 "2019-08-12T22:41:55Z")
His patent has not expired. ---
**Author:** ![da5id](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/da5id/32/48214_2.png) [@da5id](https://forums.yoyoexpert.com/u/da5id)\ **Post date:** [August 12, 2019, 10:42pm UTC](https://forums.yoyoexpert.com/t/one-drop-flat-bearings-are-outdated-change-my-mind/302430/373 "2019-08-12T22:42:40Z")
Is this complete? Anything else? ---
**Author:** ![Myk\_Myk](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/myk_myk/32/63087_2.png) [@Myk\_Myk](https://forums.yoyoexpert.com/u/Myk_Myk)\ **Post date:** [August 12, 2019, 10:42pm UTC](https://forums.yoyoexpert.com/t/one-drop-flat-bearings-are-outdated-change-my-mind/302430/374 "2019-08-12T22:42:45Z")
Does anyone know the year of the patent? ---
**Author:** ![andy569](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/andy569/32/1256_2.png) [@andy569](https://forums.yoyoexpert.com/u/andy569)\ **Post date:** [August 12, 2019, 10:43pm UTC](https://forums.yoyoexpert.com/t/one-drop-flat-bearings-are-outdated-change-my-mind/302430/375 "2019-08-12T22:43:44Z")
That’s all the centering types atm ---
**Author:** ![andy569](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/andy569/32/1256_2.png) [@andy569](https://forums.yoyoexpert.com/u/andy569)\ **Post date:** [August 12, 2019, 10:44pm UTC](https://forums.yoyoexpert.com/t/one-drop-flat-bearings-are-outdated-change-my-mind/302430/376 "2019-08-12T22:44:41Z")
I think a grooved flat bearing would be cool but nobody’s done it yet :thinking: ---
**Author:** ![zslane](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/zslane/32/19816_2.png) [@zslane](https://forums.yoyoexpert.com/u/zslane)\ **Post date:** [August 12, 2019, 10:44pm UTC](https://forums.yoyoexpert.com/t/one-drop-flat-bearings-are-outdated-change-my-mind/302430/377 "2019-08-12T22:44:48Z")
This came up not long ago and it was listed as lapsed on the patent website, but then a few days later it showed as renewed. ---
**Author:** ![da5id](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/da5id/32/48214_2.png) [@da5id](https://forums.yoyoexpert.com/u/da5id)\ **Post date:** [August 12, 2019, 10:45pm UTC](https://forums.yoyoexpert.com/t/one-drop-flat-bearings-are-outdated-change-my-mind/302430/378 "2019-08-12T22:45:44Z")
[US7175500B1 - Yo-yo having a concave bearing surface for performing string layering maneuvers - Google Patents](https://patents.google.com/patent/US7175500) 2004 “…urge the string towards the center” String Urging Bearing :wink: ---
**Author:** ![Myk\_Myk](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/myk_myk/32/63087_2.png) [@Myk\_Myk](https://forums.yoyoexpert.com/u/Myk_Myk)\ **Post date:** [August 12, 2019, 10:47pm UTC](https://forums.yoyoexpert.com/t/one-drop-flat-bearings-are-outdated-change-my-mind/302430/379 "2019-08-12T22:47:20Z")
Thanks. @da5id, 2004? I thought the max is 20 years. Guess I was wrong… ---
**Author:** ![da5id](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/da5id/32/48214_2.png) [@da5id](https://forums.yoyoexpert.com/u/da5id)\ **Post date:** [August 12, 2019, 10:48pm UTC](https://forums.yoyoexpert.com/t/one-drop-flat-bearings-are-outdated-change-my-mind/302430/380 "2019-08-12T22:48:21Z")
Applied for in 2004. Granted in 2007. And extended to 2024. 2024 is 20 years from date of application if my calculations are correct … ---
**Author:** ![Nathan](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/nathan/32/191605_2.png) [@Nathan](https://forums.yoyoexpert.com/u/Nathan)\ **Post date:** [August 12, 2019, 10:48pm UTC](https://forums.yoyoexpert.com/t/one-drop-flat-bearings-are-outdated-change-my-mind/302430/381 "2019-08-12T22:48:58Z")
Crucial did grooved bearings many moons ago. [Previous page](https://forums.yoyoexpert.com/t/one-drop-flat-bearings-are-outdated-change-my-mind/302430.md?page=18) [Next page](https://forums.yoyoexpert.com/t/one-drop-flat-bearings-are-outdated-change-my-mind/302430.md?page=20)