Originally Posted by
stronglight
The early 1980s Shimano Deore "Touring" group could use the TA chainrings, too. However, their crank arms were different, with no indentation {see scan below} ... a few years later Shimano adopted the Sugino 74/110 mm bolt circle and dropped that style.
Here's a pic of the Deore touring crank (a $17 Craig's List find), the right side of which I currently have on my Kogswell.
Neal