I am learning how to do some trills but they are really fast and my trills are really slow. Like for instance crazy train the one part in the solo he just does the trills, while some tap. I can pick to the speed but it doesn't sound as good as a trill. So what are some exercises or techniques so I can trill fast.
What you want to do is practice really slowly and get it so that you can trill without any other fingers moving. The other fingers moving is resistance that slows you down. Once you can do that, speed it up little by little until you can do it full speed.
Strength exercises help too, like using a gripmaster and working out your extensor muscles too