# ZGRT: KnuckleYo at YYE
**URL:** https://forums.yoyoexpert.com/t/zgrt-knuckleyo-at-yye/362427
**Category:** Manufacturer Official News
**Created:** [September 5, 2022, 11:44am UTC](https://forums.yoyoexpert.com/t/zgrt-knuckleyo-at-yye/362427 "2022-09-05T11:44:51Z")
**Posts on this page:** 20
**Page:** 4
### Author:  [@jeduardo](https://forums.yoyoexpert.com/u/jeduardo)
#### Post date: [September 13, 2022, 3:07pm UTC](https://forums.yoyoexpert.com/t/zgrt-knuckleyo-at-yye/362427/61 "2022-09-13T15:07:07Z")
This one is not a collab and I do not think it will push the limits of your wallet 🕶
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### Author:  [@jeduardo](https://forums.yoyoexpert.com/u/jeduardo)
#### Post date: [September 13, 2022, 5:21pm UTC](https://forums.yoyoexpert.com/t/zgrt-knuckleyo-at-yye/362427/62 "2022-09-13T17:21:36Z")
These two pictures complement the last one that unveils the project.
you were pretty much on the right track since the very beginning @adamantiumpops:+1:
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### Author:  [@Yoyogeek15](https://forums.yoyoexpert.com/u/Yoyogeek15)
#### Post date: [September 13, 2022, 5:34pm UTC](https://forums.yoyoexpert.com/t/zgrt-knuckleyo-at-yye/362427/63 "2022-09-13T17:34:01Z")
WHAT IS THAT !!! My mind’s going all over the place 🤯 this should be an interesting release :wink:
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### Author:  [@bheinz63](https://forums.yoyoexpert.com/u/bheinz63)
#### Post date: [September 13, 2022, 5:34pm UTC](https://forums.yoyoexpert.com/t/zgrt-knuckleyo-at-yye/362427/64 "2022-09-13T17:34:05Z")
oh my GODDDDDD. dude I cant wait.
instant purchase, even consdiering i just snagged a modular AO2 knucklebone.
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### Author:  [@bheinz63](https://forums.yoyoexpert.com/u/bheinz63)
#### Post date: [September 13, 2022, 5:35pm UTC](https://forums.yoyoexpert.com/t/zgrt-knuckleyo-at-yye/362427/65 "2022-09-13T17:35:05Z")
YoBegliBone has entered the chat.
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### Author:  [@adamantiumpops](https://forums.yoyoexpert.com/u/adamantiumpops)
#### Post date: [September 13, 2022, 5:57pm UTC](https://forums.yoyoexpert.com/t/zgrt-knuckleyo-at-yye/362427/66 "2022-09-13T17:57:36Z")
Yooooo what do I win?! Other than the incredible prestige?
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### Author:  [@jeduardo](https://forums.yoyoexpert.com/u/jeduardo)
#### Post date: [September 13, 2022, 6:10pm UTC](https://forums.yoyoexpert.com/t/zgrt-knuckleyo-at-yye/362427/67 "2022-09-13T18:10:08Z")
Well… I was not thinking in giving a prize, but man, I think you deserve one 🕶
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### Author:  [@adamantiumpops](https://forums.yoyoexpert.com/u/adamantiumpops)
#### Post date: [September 13, 2022, 7:11pm UTC](https://forums.yoyoexpert.com/t/zgrt-knuckleyo-at-yye/362427/68 "2022-09-13T19:11:40Z")
I was mostly kidding, but will accept any and all forms of reward.
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### Author:  [@jeduardo](https://forums.yoyoexpert.com/u/jeduardo)
#### Post date: [September 14, 2022, 8:29pm UTC](https://forums.yoyoexpert.com/t/zgrt-knuckleyo-at-yye/362427/69 "2022-09-14T20:29:17Z")
**KnuckleYo**
We have a tendency in wanting to turn everything we see into a yoyo. Some ideas from this tendency are, of course, kind of crazy but some others are kind of cool. One day, having this obsession in mind while looking at a knuckle roller, we asked ourselves our typical initial question: what if…
And here we are introducing the KnuckleYo.
Specs:
**Yoyo mode:**
Diameter 22.5 mm
Width 35.8 mm
Gap 3.45 mm
Weight 47.7 gr
Bearing: Concave Size A
Materials: Stainless Steel, Brass and Copper
**Knuckle roller mode:**
Max diameter: 22.5 mm
Length: 61 mm
Weight: 53.2 gr
Body: Aluminum
Beads: Stainless Steel, Brass and Copper
The KnuckleYo pushed our very own limits in creating a knuckle roller that is capable in turning into a yoyo—hmmm we are not sure now if it was the other way around: a yoyo that is capable in turning into a knuckle roller? @yoyodoc might have the best answer to this 🕶
The initial challenge we hit right away was the weight and dimensions the KnuckleYo needed to have in other to be functional as a yoyo and as a knuckle roller. We played around with different dimensions, shapes and materials. Some worked perfectly, some just did not such as Titanium. One of prototypes we made out of titanium did not perform the best as a yoyo. The limitations of the dimensions and its density did not play well.
—picture of the prototype with Titanium beads—
—Picture comparing one of the prototypes fully tested as begleri (left) with production version (right)—
For such reasons, we ended up using only Stainless Steel, Brass and Copper. All of them have similar densities but different enough to have a different weight distribution for each material. In other words, although the weight is the pretty much the same, each material variation has a slightly different weight distribution.
The other challenge we had was in the designing part. We wanted to have thin walls with thick rims but the size of the cup prevented to use standard tooling. This of course led us to work with the machinist and create customized tooling.
—picture of the final version—
The initial idea was to accommodate begleri as part of the features by using a 275 paracord that fit the M4 hole size no problem. It worked perfectly. The problem we had was that the axle was going through the cup side making the yoyo assembly a little bit frustrating. For such reason we ended up adding a stop to prevent the axle to go to the side of the cup, but that reduced the diameter of the ending part of the axle hole. For such reason, a \<2mm diameter paracord could do the trick to turn the KnuckleYo in begleri.
—Picture of two prototypes: one made out of Titanium (no cup) and the other in Stainless Steel with the hole size to accommodate begleri—
For the engine of the yoyo, we did not want to use a mini bearing. We wanted instead to use a a bearing size that had a good performance and that was easy to find out there in the market. At the same time, we wanted the bearing to be concave to some how reduce the friction of the string with the pads. We ended up choosing an A size bearing and customized pads to properly fit the bearing and yoyo dimensions—by the way, our Throw Key can also remove this bearing if it gets stuck :wink:
—final version—
Playing with a mini yoyo is challenging. This is not the exception but definitely has great stability to perform complex tricks and to improve your yoyo accuracy. One element that definitely is key with this throw is the string, we tested several combinations in terms of materials, length and thickness along with Zipline to find the perfect match that suited the KnuckleYo not only from the performance perspective, but also from the winding up and binding perspectives.
When not in yoyo mode, you can toss it in your pocket and start using it as a knuckle roller practically anywhere yo go.
This project made us connecting with different people with different skills to test the prototypes and to receive feedback after testing them. We would like to thank them all for their time and extraordinary response that helped us to develop this project.
As we always say, let nothing hold you down.
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### Author:  [@POspot](https://forums.yoyoexpert.com/u/POspot)
#### Post date: [September 14, 2022, 8:32pm UTC](https://forums.yoyoexpert.com/t/zgrt-knuckleyo-at-yye/362427/70 "2022-09-14T20:32:54Z")
Just gotta
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### Author:  [@suspense](https://forums.yoyoexpert.com/u/suspense)
#### Post date: [September 14, 2022, 8:40pm UTC](https://forums.yoyoexpert.com/t/zgrt-knuckleyo-at-yye/362427/71 "2022-09-14T20:40:58Z")
This is absolutely insane.
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### Author:  [@Yoyogeek15](https://forums.yoyoexpert.com/u/Yoyogeek15)
#### Post date: [September 14, 2022, 8:51pm UTC](https://forums.yoyoexpert.com/t/zgrt-knuckleyo-at-yye/362427/72 "2022-09-14T20:51:30Z")
Wow !!! Just wow !!! You guys really pushed the limits on this one. A knuckle roller, begleri, and yo-yo all in one !!! That’s insane. I might just try one out :wink:
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### Author:  [@POspot](https://forums.yoyoexpert.com/u/POspot)
#### Post date: [September 14, 2022, 9:57pm UTC](https://forums.yoyoexpert.com/t/zgrt-knuckleyo-at-yye/362427/73 "2022-09-14T21:57:00Z")
I will have to get 2 one set up as throw stainless and one set up as knuckle bone copper or brass. That is my wants. When are they going to drop and where here on Yo-Yo expert ? Links to other places please. With whip cream and a cherry.
Thanks
Have a great rest of the week.
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### Author:  [@jeduardo](https://forums.yoyoexpert.com/u/jeduardo)
#### Post date: [September 14, 2022, 10:19pm UTC](https://forums.yoyoexpert.com/t/zgrt-knuckleyo-at-yye/362427/74 "2022-09-14T22:19:52Z")
Thanks! As I mentioned in the previous post, it is doable to do begleri but it does require a paracord thinner than #275. The weight of the beads for begleri would be in the heavier range–~22.7 gr per bead.
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### Author:  [@hesperaux](https://forums.yoyoexpert.com/u/hesperaux)
#### Post date: [September 14, 2022, 10:22pm UTC](https://forums.yoyoexpert.com/t/zgrt-knuckleyo-at-yye/362427/75 "2022-09-14T22:22:04Z")
Oh my god. I need this. Post haste. You literally combined my two favorite things!
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### Author:  [@jeduardo](https://forums.yoyoexpert.com/u/jeduardo)
#### Post date: [September 14, 2022, 10:22pm UTC](https://forums.yoyoexpert.com/t/zgrt-knuckleyo-at-yye/362427/76 "2022-09-14T22:22:58Z")
Just waiting for some accessories to finalize that will be part of the package and should be all set. We estimate to release the KnuckleYo by early to mid October. Dropping at our store, some others and, of course, here at YYE :wink:
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### Author:  [@bheinz63](https://forums.yoyoexpert.com/u/bheinz63)
#### Post date: [September 14, 2022, 10:23pm UTC](https://forums.yoyoexpert.com/t/zgrt-knuckleyo-at-yye/362427/77 "2022-09-14T22:23:33Z")
This is so cool!! Really cant wait for this, going to try and snag a rainbow bead/black bone one (if that combo exists lol)
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### Author:  [@jeduardo](https://forums.yoyoexpert.com/u/jeduardo)
#### Post date: [September 14, 2022, 10:27pm UTC](https://forums.yoyoexpert.com/t/zgrt-knuckleyo-at-yye/362427/78 "2022-09-14T22:27:51Z")
I have to say it is a great combination!
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### Author:  [@jeduardo](https://forums.yoyoexpert.com/u/jeduardo)
#### Post date: [September 14, 2022, 10:28pm UTC](https://forums.yoyoexpert.com/t/zgrt-knuckleyo-at-yye/362427/79 "2022-09-14T22:28:27Z")
Yes, that combination will be available :+1:
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### Author:  [@100Love](https://forums.yoyoexpert.com/u/100Love)
#### Post date: [September 14, 2022, 10:32pm UTC](https://forums.yoyoexpert.com/t/zgrt-knuckleyo-at-yye/362427/80 "2022-09-14T22:32:54Z")
This is such a beautiful and unique concept! Congratulations on trying something completely new, and achieving it ten-fold. Can’t wait to get my hands on one when they release!
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