D) What design characteristics, if any, contribute in a meaningful way to the effective transfer of energy when throwing? (e.g. diameter relative to hand size.)
To be clear, I don’t have answers to these questions, I just think they are interesting to think about and discuss.
I agree that there isn’t a single end-all be-all design objective, which is why I raised the question. It seemed like the unspoken premise of the original post was that more “power” was better.
I would also suggest that power, performance, and stability are interrelated, but different.
I would expect moment of inertia would translate somehow to RPMs. The question of sustained RPMs then comes down to friction (bearing, string, air, tile floor, etc.).
Performance may be more subjective, but would be how effectively the “power” can be used. A hugely oversized yoyo might have greater power, but lesser performance, for example.
I think resistance to procession is part of stability, but it has also been my sense that player technique with staying on plane is also a contributing factor for most people.
True, but if we’re asking about the differences between types of yoyos, then you have to take the player out of the equation because otherwise you can’t tell how much of the results is due to the yoyo and how much is due to the player. Unless I am misunderstanding the goals of the original question.
Definitely interesting things to think about for sure, and I think that designers who’ve done this sort of testing on their own may have more experimental evidence/info about this than we do. It’s still fun to discuss the physics of rotational motion though lol.
Just to clarify, sustained RPM would be directly tied to moment of inertia, while initial rpm is tied to your hand and the string applying torque as the yoyo goes down. A higher moment of inertia might actually be lower RPM (just because the yoyo will resist gaining high RPM based on its rotational inertia), but that RPM would be sustained longer because the moment of inertia would try to keep the yoyo at the same rotational speed while the string, the air, and other factors slow it down. I think stability would also be tied to the moment of inertia, as the yoyo would be resisting rotational tilt.
I’m not really sure what power has ever meant in the context of yoyoing tbh, it doesn’t really have anything to do with actual power, I think it more so refers to the rather intense feeling that a lot of competition oriented bimetals give.
Yeah, exactly. I think it might be difficult to arrive at a consensus as to what “power” ought to refer to when someone asks if hybrids can have “more power” than bi-metals.
That’s what I’ve wanted to suss out. I’ve seen a lot of comments over the years about a design (often organics) being “unstable” or some designs being “more stable” and I’m curious to know if it’s purely a design issue or if it has more to do with the interplay of the design and the player where some designs compensate or allow for looser play without having a noticeable degradation of performance.
On a tangent, optimization for spin time (which seems related to RPMs and “power”) led to the creation of C3’s BTH in 2012, which weighed 220g and slept for 30 minutes, but was not useful for looping or string tricks or hand health.
But I think nobody has asked the real question. Would the most “powerful” hybrid be “glass smooth”?
I think power would be best described as how long the yoyo retains a steady rate of spin over time, all else staying equal (more time = more power). Stability would be the ability for it to resist slowdown and precession when outside factors are introduced (string friction, air resistance, knocking it into your hand etc.)
When I say powerful I mean how much It can power through long ,taxing combos and still keep going or come back to your hand with a ton of power/ force. I guess you could take the best hybrids and the best bimetals and compare. So far the iceberg has beat every bimetal throw I own in terms of power. I tested them all today and the iceberg was able to perform longer than any of my other throws
I like yoyos with more power. They are better for learning and personally I love being able to do longer combos without my yoyo dying. Everyone seeks different things though
Well getting more rim weight past what a Draupnir type of yoyo has isn’t necessarily better. Other yoyos have done it but they don’t beat the Draup. It gets so hard to control once you absolutely max out rim weight on a big and light yoyo.
I could be wrong but… although the draupnir is an exceptional yoyo I think there are a ton of yoyos that are just as good or even better than the draup that are out. I think there is just so much hype for that yoyo(and it being made by yyr) it causes the placebo effect.
