Hi Pat in NC,

I have learned recently that the Best 60 and the Cat 60 up until 1928 had the tracks with the rib at the trailing edge. For information, you can look at issue #19 of the club newsletter. There is an article by Dave Smith that explains the design. The Sixty is the only Tractor made by Cat with that design according to Dave.

By the way, the club still has plenty of copies of issue #19for sale. I will bring some to the national ACMOC Show in Virginia.

Regards,
Lee

Lee,

Thanks for the information! I kind of thought it was intentional on some of the SIXTY's.

I will look you up in Richmond. I'm counting down the days!!