Chuck, what do you mean by amazing? Surplus Center, as Willie suggested has one available ratio is 40:1 .38 hp left or right output for under a 100 bucks It's Item Number: 13-133-40-L ( or R)
Busy Bee 12-36 lathe, Busy Bee Mill drill, Busy Bee 4x6 bandsaw, Homemade 9x17 bandsaw, Ad infinitum.