Laurie Forbes wrote:
Am contemplating constructing a wood cutting chop saw for cutting up
fireplace logs. 18" circular blades are readily available here and would
seem about the right size for the size of logs I'd be working with.
Question is, what HP electric motor would be required (about 3?) and, what
would be best RPM for the blade?

All suggestions appreciated.....

Laurie Forbes



7.5hp MINIMUM motor, and that's electric. If gas, make it 18hp.

Blade speed 3000 sfm. 1.5' diameter, 4.7' circumference, rpm = 636.

Figure 1760 rpm / 3 = 586 rpm, close enough, gear a 1760 motor down 3:1-ish.

This sounds *extremely* unsafe. Better type all your questions now while you
still have hands.

GWE