Return to question What is the change gear setup for a Fellows 6A Shaper?
the index gear formula for a Fellows 6A Shaper is: (G/T x 3/10)= (A/PG x B/C x D/E) where: G= teeth in workpiece T= teeth in cutter 3/10 is machine constant A is index gear on worm shaft PG is “pitch gear”, drives index gear “A” B is index gear mounted behind “PG” on same shaft C is index gear drives “B” D is index gear mounted behind “C” on same shaft E is index gear drives “D”, mounted far left All shafts are marked for the respective index gear. Our thanks go to Don Shattuck at Gear Works Inc. in Springfield, VT USA for providing this very useful information. Also, Gear Works specializes in Fellows 6A Shapers and are preparing a complete manual set for the care and feeding of 6A’s. According to Don, these manuals will detail in simple to follow steps the adjustment of the infeed and timing mechanism, 4-point adjustment and apron lock setting, as well as trouble shooting common problems. If you have (or want) a 6A, then you will want to visit their web site.
