good stuff chis. i definitely appreciate you taking the time to work out numbers for each character. this is similar to the down tilt combo thread that i had magnum make.
I'm glad that Chis has some of the support for this that he does have. I tried making a thread like this before and instantly got told by soo many people that it was a horrible idea and then the few people who seemed interested never replied back on it at all. So, instead, I started trying to make a list of occurrences based on my own videos. Unfortunately, i only have 2 times that I have done it that I have been able to replicate, one being the fox instace that I mentioned. The other is on Ivysaur, but it didn't kill him because he didn't go off the side of the stage but it was clearly a spike.
@ Chis -
I gave the exact info that I have on the Fox example, and if you need to see it is in my combo vid and I can try to give you the exact time in the vid that it is shown if you are interested. I can also post the Ivysaur data that I have which includes a description of it and I can upload the vid I have of it on youtube if you'd like. I believe that there are a lot of factors to include in this that may make it hard to get a general percentage rule about when to do it. If we can manage that, then great that would be amazing. If not, then I think we could at least compile a list of times that I has happened and descriptions of when it was done so that we can try to replicate them in matches. Like, I might be able to say, "oh, try for a upsmash spike when fox is at the 20 -30% range after a down throw." The problem I see with getting a typical rule is that we don't have enough data to determine how this works exactly. I think it is very important that you have figured out that the 7th hit is a downward hit and this will probably make a huge difference.
The problem with that even is that we don't seem to have a way to cause the 8th hit to miss or for the 7th hit to launch them out fast enough. As for making that happen, I have several factors that I think may effect it. These are: How many hits of the up smash have hit the opponent, the distance between the opponent and Sonic when the upsmash begins, the physical position of the opponent ( laying on the ground, standing, in the air, rolling, running, etc.) when it begins, the opponents DI, opponent's percentage, opponent's character (in regards to weight, size, shape), etc.
Also, I just thought of this, could we find a distance, from which we can hyphen smash or DACUS to where the first 6 hits will be done by the time we hit the opponent so that we only land the 7th?