Posted by mark fenn on January 08, 2010 at 13:56:31:
hi there i need to make a set of helical gears 8dp 20 pa 30 degree helix left and right hand 48t on 1 gear and 19t on the other which gives me a 2.5 to 1 ratio the centre distance is 110mm and i need .2mm backlash between i need to know both gear diameters and span sizes