# Concave sounds... metallic? **URL:** \ **Category:** Yo-Yo Mods and Maintenance\ **Created:** [January 27, 2012, 12:38pm UTC](https://forums.yoyoexpert.com/t/concave-sounds-metallic/34302 "2012-01-27T12:38:42Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![PlasticWhip](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/plasticwhip/32/896_2.png) [@PlasticWhip](https://forums.yoyoexpert.com/u/PlasticWhip)\ **Post date:** [January 27, 2012, 12:38pm UTC](https://forums.yoyoexpert.com/t/concave-sounds-metallic/34302/1 "2012-01-27T12:38:42Z")
So the bearing that came with my Desperado isn’t the one mentioned in reviews and has 8 balls instead of 10. I did shields bearing mod to get some stubborn dirt out of it and it hasn’t been the same since. I seems as if there’s something in it cause when i spin it dry one of the balls catches on something causing a “Metallic” sound and way reduced spin time. This problem is fixed with lube, but is plenty louder. Does anyone know how to fix this? Thanks, WildCat23 ---
**Author:** ![sirnaq\_MN42](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/sirnaq_mn42/32/613_2.png) [@sirnaq\_MN42](https://forums.yoyoexpert.com/u/sirnaq_MN42)\ **Post date:** [January 27, 2012, 12:49pm UTC](https://forums.yoyoexpert.com/t/concave-sounds-metallic/34302/2 "2012-01-27T12:49:09Z")
I would first try cleaning out the bearing and blowing it dry with compressed air. If that doesn’t work then you might need to get a new bearing. ---
**Author:** ![PlasticWhip](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/plasticwhip/32/896_2.png) [@PlasticWhip](https://forums.yoyoexpert.com/u/PlasticWhip)\ **Post date:** [January 27, 2012, 12:57pm UTC](https://forums.yoyoexpert.com/t/concave-sounds-metallic/34302/3 "2012-01-27T12:57:46Z")
> [@sirnaq\_MN42](#): > > I would first try cleaning out the bearing and blowing it dry with compressed air. If that doesn’t work then you might need to get a new bearing. I tried all that except for the new bearing. I also tried the paper method with no success. I think there may be something stuck on the inner race. ---
**Author:** ![anonyo](https://avatars.discourse-cdn.com/v4/letter/a/8baadc/32.png) [@anonyo](https://forums.yoyoexpert.com/u/anonyo)\ **Post date:** [January 27, 2012, 3:35pm UTC](https://forums.yoyoexpert.com/t/concave-sounds-metallic/34302/4 "2012-01-27T15:35:41Z")
The shields mod shouldn’t be done on a ceramic bearing. It’s more than likely ruined. That mod also shouldn’t be done unless you have a few bearings to practice on. Takes a few tries to get good at it. ---
**Author:** ![PlasticWhip](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/plasticwhip/32/896_2.png) [@PlasticWhip](https://forums.yoyoexpert.com/u/PlasticWhip)\ **Post date:** [January 27, 2012, 8:31pm UTC](https://forums.yoyoexpert.com/t/concave-sounds-metallic/34302/5 "2012-01-27T20:31:55Z")
> [@Icthus](#): > > The shields mod shouldn’t be done on a ceramic bearing. It’s more than likely ruined. > That mod also shouldn’t be done unless you have a few bearings to practice on. Takes a few tries to get good at it. I don’t think I said it’s ceramic, did I? ---
**Author:** ![sirnaq\_MN42](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/sirnaq_mn42/32/613_2.png) [@sirnaq\_MN42](https://forums.yoyoexpert.com/u/sirnaq_MN42)\ **Post date:** [January 27, 2012, 11:04pm UTC](https://forums.yoyoexpert.com/t/concave-sounds-metallic/34302/6 "2012-01-27T23:04:15Z")
Whitch polish did you use for the sheilds mod? If you use a gritty polish it will ruin your bearing. ---
**Author:** ![PlasticWhip](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/plasticwhip/32/896_2.png) [@PlasticWhip](https://forums.yoyoexpert.com/u/PlasticWhip)\ **Post date:** [January 29, 2012, 1:18am UTC](https://forums.yoyoexpert.com/t/concave-sounds-metallic/34302/7 "2012-01-29T01:18:11Z")
It’s equivalent to 10,000, I think that pretty fine.