The gears were made of nylon actually, I've replaced a few of them in my time. It's easy to do. They tended to get brittle if grease was used on them (a no-no). I haven't seen the inside of the newer machines, it would be interesting to find out if they have spiral gears.
Originally Posted by
J Miller
We were at JoAnn Fabrics and ran into a guy who said he had or worked at a sewing machine shop in or near Divernon, IL. When the subject of plastic gears came up he told us that Singer is now using spiral cut gears instead of the straight cut gears and that although they are still plastic they are not prone to breakage like the old gears were.
Since I don't have a new(er) sewing machine to look at I was wondering if anyone here had seen the insides of a newer Singer to confirm or deny what this guy said.
Joe