Originally Posted by
J Miller
I looked at a parts source today and some of the gears they showed were spiral and I know the originals were straight. The Singer 538 is an example, the feed dog gears are straight I'm sure, the parts place shows spiral, same with the bobbin hook drive gears.
If this is true, perhaps retro fitting some of these machines might increase their longevity.
Joe
Singer would never retro fit the old machines - they are in business to sell new machines
.