i have and evader jw whats a good Torque for a new servo and speed
dont need some tower links just a good range for both

For a 6v charge, look for a .16 response time or lower. Trouble your going to find.. is that many metal geared servos have slower response times, but higher torque. There are some good futaba plastic servo's tho that have very very high torque and very quick response times. A good torque amount for an st would be 90 or higher i'd say.

My Hitec HS605 in my GT has served me well, as has the 645 in my X-Terminator, and the JR Z590M in my Nitro TC3

I would say .20 secs or less on transit time, 85+ on torque