The drawings of this power hammer are free to use for anyone who is interested. The drawings are created in ACAD light.
This link will direct you to my drawings
25 LBS power hammer. Motor 750 Watt 2850 rpm. Top speed approximately 4 hits per second. Anvil is made of a 30 Kg block cast iron and supported by a steel pipe filled with 30 Kg lead on rubber shock absorbers to please the neighbors.
After some modifications the machine is more stable.
I reduced the speed from 6 hits per second to 4 hits per second.
mounted some springs for the motor en the middle shaft.
I also welded some parts together for more stability.
To be continued.