Decided it was time to beef my hammer up a little.
I upsized from a 1-HP, 120V motor to a 2-HP, 1,750 HP TEFC motor wired at 240V. Also added about 12ish lbs. of lead to the tupp and increased the couterbalance weight by about 2 lbs. I increased the motor mounting plate from 1/4" thick to 3/4" to avoid any plate deflection due to the heavier motor. So now it's closer to a 65-lb hammer.
I'm amazed by how much more responsive the hammer is now and the noticable increase in striking force. I can definitely feel the difference in my 6", 5,000 psi concrete slab for sure. The main thing I was worried about was loss of finesse since I work with a large size range of materials, but I honestly think I have better control now than I did with the 1-HP motor.
Also took the time to install an industrial grade switch that's lockable since my grandson (toddler) has all of the sudden taken an interest in the "powahamma" .