# curved bearings... concave, koncave, terrapin X wing, center trac..... question. **URL:** \ **Category:** Looking for Help/Recommendation\ **Created:** [March 24, 2012, 8:20am UTC](https://forums.yoyoexpert.com/t/curved-bearings-concave-koncave-terrapin-x-wing-center-trac-question/36157 "2012-03-24T08:20:36Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![turtle](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/turtle/32/1044_2.png) [@turtle](https://forums.yoyoexpert.com/u/turtle)\ **Post date:** [March 24, 2012, 8:20am UTC](https://forums.yoyoexpert.com/t/curved-bearings-concave-koncave-terrapin-x-wing-center-trac-question/36157/1 "2012-03-24T08:20:36Z")
As far as concaved bearings go - I’ve used Center Track (Northstar and Protostar) and the Terrapin wing… of the others out there, how much deeper of a groove are they? the T-Wing is super shallow, especially compared to YYF CT. So I’m wondering about the Konkave and Crucial… I’ve heard pro’s and con’s on all of them, but I haven’t heard too much of what makes them different, which is depth Another question - what type of throws do you find yourself putting/favoring the non-flat bearings into (rather than flats)? Heavier? Lighter? More weight on a particular part of the throw (heavy outer rim, etc)… ---
**Author:** ![anonyo](https://avatars.discourse-cdn.com/v4/letter/a/8baadc/32.png) [@anonyo](https://forums.yoyoexpert.com/u/anonyo)\ **Post date:** [March 24, 2012, 8:36am UTC](https://forums.yoyoexpert.com/t/curved-bearings-concave-koncave-terrapin-x-wing-center-trac-question/36157/2 "2012-03-24T08:36:39Z")
Observation, I don’t have calipers to confirm anything: The koncave seems a bit deeper than the centertrac. The centertrac pulls string away from the sides and into the middle region. The konkave is rounded, so string is forced/pulled to the center by the shape. The Crucial Groove seems about as deep as the centertrac, but it’s V-shaped to direct the string to the central groove. The Terrapin X Wing Cut is merely a “center assist” concept. String layers aren’t forced to bunch up in the middle, yet for the most part, the string will be centered. I’ve heard the Wing Cut is like 3/100ths of an inch or some sort of really small number like that. As far as what’s best or better, it really varies a lot. As you know, in regards to preferences, bearings also fall into that area as well. I personally find the Hiroyuki Suzuki signature yoyos work best with konkaves. Or, at least, I like them better that way. The Meteor and Speeder 2 come with flats, but I put konkaves in them and I like them better. The Phenom and Phenomizm come with konkaves. I haven’t put one in my Chaser yet. My Crucial Half & Half seems to perform best with a Crucial Grooved bearing. Go figure. It came stock with a flat. The bearing is great, but it didn’t work best for me. Now that I put a grooved bearing in there, I like it a lot better. Because the ghost pads are thick, it keeps the string away from the pads and so it is less grabby. There’s been discussions that bearings don’t make a difference. My thoughts, right or wrong, I feel that there’s a reason why some bearings are chosen to be installed into a yoyo. Of course, it’s nice we can swap out for what we might like. The guy I throw with on the weekends likes Crucial Grooved bearings. I tend to like either a stock-type bearing, but in some instances, I do like to make my own choices. I’ve put Konkaves in other yoyos as well, but I just haven’t cared for it in those yoyos. But that’s just my experiences. I think we should all buy some bearing and experiment. ---
**Author:** ![amanojakumo](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/amanojakumo/32/173_2.png) [@amanojakumo](https://forums.yoyoexpert.com/u/amanojakumo)\ **Post date:** [March 24, 2012, 10:35am UTC](https://forums.yoyoexpert.com/t/curved-bearings-concave-koncave-terrapin-x-wing-center-trac-question/36157/3 "2012-03-24T10:35:11Z")
I’m planning on getting a crucial bearing to try out, but right now I put konkaves in all my throws. I’ve tried many bearings over the years, but konkaves are my preference. I’ve noticed that konkaves seem to play best with slick 6 50/50, no string bunching. ---
**Author:** ![fjh123](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/fjh123/32/325_2.png) [@fjh123](https://forums.yoyoexpert.com/u/fjh123)\ **Post date:** [March 26, 2012, 3:32am UTC](https://forums.yoyoexpert.com/t/curved-bearings-concave-koncave-terrapin-x-wing-center-trac-question/36157/4 "2012-03-26T03:32:26Z")
Terrapi X bearings have a very sleight dip (.003in.) With a decent throws the string will find center. There is no point in having a centered string on a bad one. They are not for beginners. ---
**Author:** ![anonyo](https://avatars.discourse-cdn.com/v4/letter/a/8baadc/32.png) [@anonyo](https://forums.yoyoexpert.com/u/anonyo)\ **Post date:** [March 26, 2012, 5:30am UTC](https://forums.yoyoexpert.com/t/curved-bearings-concave-koncave-terrapin-x-wing-center-trac-question/36157/5 "2012-03-26T05:30:56Z")
> [@fjh123](#): > > Terrapi X bearings have a very sleight dip (.003in.) With a decent throws the string will find center. > There is no point in having a centered string on a bad one. > They are not for beginners. This beginner greatly benefited from these bearings. This beginner needs to get off his butt and order some more Terrapin X bearings soon! (in case nobody figured out how I’m referring to as the beginner, it’s ME!) ---
**Author:** ![mingfu](https://avatars.discourse-cdn.com/v4/letter/m/f0a364/32.png) [@mingfu](https://forums.yoyoexpert.com/u/mingfu)\ **Post date:** [April 8, 2012, 8:47pm UTC](https://forums.yoyoexpert.com/t/curved-bearings-concave-koncave-terrapin-x-wing-center-trac-question/36157/6 "2012-04-08T20:47:00Z")
> [@Studio42](#): > > Observation, I don’t have calipers to confirm anything: > > The koncave seems a bit deeper than the centertrac. The centertrac pulls string away from the sides and into the middle region. The konkave is rounded, so string is forced/pulled to the center by the shape. The Crucial Groove seems about as deep as the centertrac, but it’s V-shaped to direct the string to the central groove. > > The Terrapin X Wing Cut is merely a “center assist” concept. String layers aren’t forced to bunch up in the middle, yet for the most part, the string will be centered. I’ve heard the Wing Cut is like 3/100ths of an inch or some sort of really small number like that. > > As far as what’s best or better, it really varies a lot. As you know, in regards to preferences, bearings also fall into that area as well. I personally find the Hiroyuki Suzuki signature yoyos work best with konkaves. Or, at least, I like them better that way. The Meteor and Speeder 2 come with flats, but I put konkaves in them and I like them better. The Phenom and Phenomizm come with konkaves. I haven’t put one in my Chaser yet. > > My Crucial Half & Half seems to perform best with a Crucial Grooved bearing. Go figure. It came stock with a flat. The bearing is great, but it didn’t work best for me. Now that I put a grooved bearing in there, I like it a lot better. Because the ghost pads are thick, it keeps the string away from the pads and so it is less grabby. > > There’s been discussions that bearings don’t make a difference. My thoughts, right or wrong, I feel that there’s a reason why some bearings are chosen to be installed into a yoyo. Of course, it’s nice we can swap out for what we might like. The guy I throw with on the weekends likes Crucial Grooved bearings. I tend to like either a stock-type bearing, but in some instances, I do like to make my own choices. > > I’ve put Konkaves in other yoyos as well, but I just haven’t cared for it in those yoyos. But that’s just my experiences. I think we should all buy some bearing and experiment. Was wondering have ever put a konkave in your dm2?? and is it nicer like how you put konvkaves in your speeder and meteor ---
**Author:** ![anonyo](https://avatars.discourse-cdn.com/v4/letter/a/8baadc/32.png) [@anonyo](https://forums.yoyoexpert.com/u/anonyo)\ **Post date:** [April 8, 2012, 9:16pm UTC](https://forums.yoyoexpert.com/t/curved-bearings-concave-koncave-terrapin-x-wing-center-trac-question/36157/7 "2012-04-08T21:16:50Z")
> [@mingfu](#): > > > [@Studio42](#): > > > > Observation, I don’t have calipers to confirm anything: > > > > The koncave seems a bit deeper than the centertrac. The centertrac pulls string away from the sides and into the middle region. The konkave is rounded, so string is forced/pulled to the center by the shape. The Crucial Groove seems about as deep as the centertrac, but it’s V-shaped to direct the string to the central groove. > > > > The Terrapin X Wing Cut is merely a “center assist” concept. String layers aren’t forced to bunch up in the middle, yet for the most part, the string will be centered. I’ve heard the Wing Cut is like 3/100ths of an inch or some sort of really small number like that. > > > > As far as what’s best or better, it really varies a lot. As you know, in regards to preferences, bearings also fall into that area as well. I personally find the Hiroyuki Suzuki signature yoyos work best with konkaves. Or, at least, I like them better that way. The Meteor and Speeder 2 come with flats, but I put konkaves in them and I like them better. The Phenom and Phenomizm come with konkaves. I haven’t put one in my Chaser yet. > > > > My Crucial Half & Half seems to perform best with a Crucial Grooved bearing. Go figure. It came stock with a flat. The bearing is great, but it didn’t work best for me. Now that I put a grooved bearing in there, I like it a lot better. Because the ghost pads are thick, it keeps the string away from the pads and so it is less grabby. > > > > There’s been discussions that bearings don’t make a difference. My thoughts, right or wrong, I feel that there’s a reason why some bearings are chosen to be installed into a yoyo. Of course, it’s nice we can swap out for what we might like. The guy I throw with on the weekends likes Crucial Grooved bearings. I tend to like either a stock-type bearing, but in some instances, I do like to make my own choices. > > > > I’ve put Konkaves in other yoyos as well, but I just haven’t cared for it in those yoyos. But that’s just my experiences. I think we should all buy some bearing and experiment. > > Was wondering have ever put a konkave in your dm2?? and is it nicer like how you put konvkaves in your speeder and meteor No I haven’t as a matter of fact. I’m pretty pleased with the Terrapin X Wing Cut I have in there. Keep in mind it comes down to preferences though. I have 2 DM2’s and I like to have them set up the same for consistency. I did recently buy another Konkave though, but not sure where it’s going to go. I got a Konkave off BST and I’m not too pleased with it, and I bought a Chinese copy and I want to see how that will perform. But I don’t think I put another Terrapin X Wing cut in the other DM2 I have, I think I popped a YYJ speed bearing in there. However I may try this anyways. ---
**Author:** ![sniffy](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/sniffy/32/729_2.png) [@sniffy](https://forums.yoyoexpert.com/u/sniffy)\ **Post date:** [April 8, 2012, 9:31pm UTC](https://forums.yoyoexpert.com/t/curved-bearings-concave-koncave-terrapin-x-wing-center-trac-question/36157/8 "2012-04-08T21:31:33Z")
> [@turtle](#): > > As far as concaved bearings go - I’ve used Center Track (Northstar and Protostar) and the Terrapin wing… of the others out there, how much deeper of a groove are they? the T-Wing is super shallow, especially compared to YYF CT. So I’m wondering about the Konkave and Crucial… I’ve heard pro’s and con’s on all of them, but I haven’t heard too much of what makes them different, which is depth > > Another question - what type of throws do you find yourself putting/favoring the non-flat bearings into (rather than flats)? Heavier? Lighter? More weight on a particular part of the throw (heavy outer rim, etc)… I’ve been playing the Decapod with a crucial bearing that I terrapin coated. It seems a bit deeper than others. I like it quite a bit. I’m not sure where. X3 sourced their curved bearing, but the one that came with my la Goutte is one of the smoothest I’ve ever played. [Sniffy-Yo.com](http://Sniffy-Yo.com) @Sniffyo on twitter ---
**Author:** ![Schnayke](https://avatars.discourse-cdn.com/v4/letter/s/f14d63/32.png) [@Schnayke](https://forums.yoyoexpert.com/u/Schnayke)\ **Post date:** [April 8, 2012, 10:09pm UTC](https://forums.yoyoexpert.com/t/curved-bearings-concave-koncave-terrapin-x-wing-center-trac-question/36157/9 "2012-04-08T22:09:22Z")
I only use non flat bearing with yoyos that don’t have a wall between the pad and bearing like the old dif-e-yo’s, or kyo’s yo. It is what they where produced for originally, and really the only viable use for them I have found. ---
**Author:** ![sniffy](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/sniffy/32/729_2.png) [@sniffy](https://forums.yoyoexpert.com/u/sniffy)\ **Post date:** [April 9, 2012, 3:43am UTC](https://forums.yoyoexpert.com/t/curved-bearings-concave-koncave-terrapin-x-wing-center-trac-question/36157/10 "2012-04-09T03:43:24Z")
> [@Schnayke](#): > > I only use non flat bearing with yoyos that don’t have a wall between the pad and bearing like the old dif-e-yo’s, or kyo’s yo. It is what they where produced for originally, and really the only viable use for them I have found. I never thought of that variable. Thanks for posting it. [Sniffy-Yo.com](http://Sniffy-Yo.com) @Sniffyo on twitter