# Bimetal ring placement?
**URL:** https://forums.yoyoexpert.com/t/bimetal-ring-placement/387246
**Category:** General Yo-Yo
**Created:** [October 24, 2023, 4:04pm UTC](https://forums.yoyoexpert.com/t/bimetal-ring-placement/387246 "2023-10-24T16:04:19Z")
**Posts on this page:** 9
**Page:** 1
### Author:  [@theendofcake](https://forums.yoyoexpert.com/u/theendofcake)
#### Post date: [October 24, 2023, 4:04pm UTC](https://forums.yoyoexpert.com/t/bimetal-ring-placement/387246/1 "2023-10-24T16:04:19Z")
hey, just had a small question about yoyo creation. what goals does each placement do rings accomplish on bimetals (outer ring, inner, mid ring, etc)? just curious since i dont know anything about engineering and design
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### Author:  [@MarioMaker17](https://forums.yoyoexpert.com/u/MarioMaker17)
#### Post date: [October 24, 2023, 4:20pm UTC](https://forums.yoyoexpert.com/t/bimetal-ring-placement/387246/2 "2023-10-24T16:20:22Z")
> [@Just the Facts: Weight and Weight Distribution](https://forums.yoyoexpert.com/t/just-the-facts-weight-and-weight-distribution/374037):
>
> Yo I’m making another one of these to get my facts straight. It seemed impossible to talk about weight without talking about weight distribution so I’m going to include both of them here. Let’s start with talking about weight in general and then weight distribution. Might as well make a general note about distribution because it is confusing. For calculating the MMOI (Mass Moment of Inertia), the energy gifted to the yo as it hits the end of the string, weight distribution is all about whe…
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### Author:  [@GTDropKnot](https://forums.yoyoexpert.com/u/GTDropKnot)
#### Post date: [October 24, 2023, 4:49pm UTC](https://forums.yoyoexpert.com/t/bimetal-ring-placement/387246/3 "2023-10-24T16:49:03Z")
Aye this project is a little cringe to me now but I’m glad if it can help ppl learn how yo-yos work. Thanks for sharing it!
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### Author:  [@theendofcake](https://forums.yoyoexpert.com/u/theendofcake)
#### Post date: [October 24, 2023, 4:51pm UTC](https://forums.yoyoexpert.com/t/bimetal-ring-placement/387246/4 "2023-10-24T16:51:58Z")
edit it! fix it up with new knowledge, would love to read it
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### Author:  [@GTDropKnot](https://forums.yoyoexpert.com/u/GTDropKnot)
#### Post date: [October 24, 2023, 5:11pm UTC](https://forums.yoyoexpert.com/t/bimetal-ring-placement/387246/5 "2023-10-24T17:11:34Z")
I mean all the info there is correct. I just came onto the forums pretty strong when I was newer and that’s why I find it cringe.
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### Author:  [@theendofcake](https://forums.yoyoexpert.com/u/theendofcake)
#### Post date: [October 24, 2023, 5:34pm UTC](https://forums.yoyoexpert.com/t/bimetal-ring-placement/387246/6 "2023-10-24T17:34:01Z")
ok i read it and it’s super fun, but i don’t think it answered my question specifically to bimetal ring placement
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### Author:  [@zaf](https://forums.yoyoexpert.com/u/zaf)
#### Post date: [October 24, 2023, 5:36pm UTC](https://forums.yoyoexpert.com/t/bimetal-ring-placement/387246/7 "2023-10-24T17:36:07Z")
I think it’s mostly a matter of how much power you want the ss rings to give but there may be smaller effects from placing ss rims inside vs outside. I think this was brought up in the discord before
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### Author:  [@Captrogers](https://forums.yoyoexpert.com/u/Captrogers)
#### Post date: [October 24, 2023, 5:39pm UTC](https://forums.yoyoexpert.com/t/bimetal-ring-placement/387246/8 "2023-10-24T17:39:53Z")
I honestly thought it was smart and wish it was more in a wiki format so it could get updated and referenced better. But I get how you feel.
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### Author:  [@Shwa](https://forums.yoyoexpert.com/u/Shwa)
#### Post date: [October 24, 2023, 5:51pm UTC](https://forums.yoyoexpert.com/t/bimetal-ring-placement/387246/9 "2023-10-24T17:51:41Z")
It’s all about weight distribution. Stainless or Ti is more dense than aluminum so that allows the designer to place weight where they want it. That’s the simple explanation. There is a whole lot more if you dive into where its placed and how much diff material is used.
There are tri metal yoyo s now. Yikes.
While 1 gram of AL equals 1 gram of Ti, they don’t occupy the same volume. A mono metal yoyo identical in shape to a bimetal will not have as much power or rotational force.