I can’t get consistent shoryuken uppercuts on my arcade stick. I’ve been practicing a week and they are pretty random wether it comes off or not. If I piano the buttons they come out more. Is that needed?
Also should I do the z motion or forward-then-hadoken. When I do the latter half the time Ryu spits out a fireball instead of shoryuken.
It took a while for me too to get used to do the shoryuken consistently. The key for it is practice and practice and more practice, and it will come out eventually.
I used training mode cheat with input display on mame-rr, you can see the setup in this video:
Definitely don’t do forward-fireball for the reason you mentioned. The easiest way for me to do it on square gate is to make sure you mash the corner as hard as you can.