# Further adventures in response systems
**URL:** https://forums.yoyoexpert.com/t/further-adventures-in-response-systems/360541
**Category:** General Yo-Yo
**Created:** [July 29, 2022, 10:55am UTC](https://forums.yoyoexpert.com/t/further-adventures-in-response-systems/360541 "2022-07-29T10:55:37Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@Zippy8](https://forums.yoyoexpert.com/u/Zippy8)
#### Post date: [July 29, 2022, 10:55am UTC](https://forums.yoyoexpert.com/t/further-adventures-in-response-systems/360541/1 "2022-07-29T10:55:37Z")
Prompted by [this reply](https://forums.yoyoexpert.com/t/hybrid-mixed-response-systems/359927/16) in another thread, another idea in this field that came and went was Roo-Yo’s SIDROMS from the mid-2000s.
Four teeny-tiny red silicone O-rings per side, held tightly in recesses, that you could… if you _ **really** _ wanted… move up and down to tweak responsiveness.
Back when the Internet was held together with string and only slightly outperformed a carrier pigeon for speed the rumour was that the machinist had misunderstood the instructions for “grooves to hold O-rings” but this - and I trust you are all sitting down - turned out to be inaccurate information on the Internet.
As such it combined elements of a starburst, O-rings and silicone for some sort of Response Trifecta. Regrettably it was soon replaced and I can’t recall any other manufacturer using the idea. Whilst it worked, it was~is a pig to adjust and balance properly.
Also of note on the internals are that the KonKave bearing sits on 3 (different) O-rings. I think this is intended to damp any vibrations as they are not needed mechanically.
Oh yeah, and it has golf-ball style dimples. It’s a lovely thing.
Edit: more pics. to pad things out.
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### Author:  [@hobby\_master](https://forums.yoyoexpert.com/u/hobby_master)
#### Post date: [July 29, 2022, 11:35am UTC](https://forums.yoyoexpert.com/t/further-adventures-in-response-systems/360541/2 "2022-07-29T11:35:27Z")
I always wondered why we havent seen more dimple experiment throws
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### Author:  [@Lido](https://forums.yoyoexpert.com/u/Lido)
#### Post date: [July 29, 2022, 8:44pm UTC](https://forums.yoyoexpert.com/t/further-adventures-in-response-systems/360541/3 "2022-07-29T20:44:33Z")
Ever see that episode of Myth Busters where they test whether golf ball dimples work or not by putting them all over a car? IIRC they decided that the dimples do reduce drag. So, yeah, why not add them to more yoyos?! Aside from the fact that only Dif-e-yo is set up for that kind of machining, of course. 🙂
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### Author:  [@mable](https://forums.yoyoexpert.com/u/mable)
#### Post date: [July 29, 2022, 8:51pm UTC](https://forums.yoyoexpert.com/t/further-adventures-in-response-systems/360541/4 "2022-07-29T20:51:22Z")
That o-ring bump response reminds me a lot of the og Loop 720s. The idea being that you could use different string materials/thicknesses to adjust the responsiveness of the yoyo.
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### Author:  [@Hanker](https://forums.yoyoexpert.com/u/Hanker)
#### Post date: [July 31, 2022, 9:34am UTC](https://forums.yoyoexpert.com/t/further-adventures-in-response-systems/360541/5 "2022-07-31T09:34:26Z")
What a throwback! Wasn’t around for that but have seen some pictures of these Loop 720s when I was getting into 2A.