AlanS
Active Member
I posted an image several days ago in Machine Modifications to show my modified George Thomas Versatile Dividing Head. I should have posted that picture in the Boo Boo section. The image showed drilling and milling the starting rod holes in the flywheel of my model Cat Sixty crawler tractor. Each hole was drilled and then canted backwards with two plunge passes of an end mill. They looked fine BUT were the wrong hand.
They should have been canted to suit clockwise starting viewed from the front but were made counter clockwise. They will never be used for starting so were just cosmetic, I doubt many would notice the mistake, but I have to please my toughest critic - myself.
Fortunately there’s a step in the flywheel perimeter so I was able to conceal machining off the holes and fixing on a replacement ring approximately 3/8 inch in cross section. This gave me a second chance to cut the holes correctly. Wish all my screwups were as easy to fix and that I noticed them while the machine setup was still in place.
They should have been canted to suit clockwise starting viewed from the front but were made counter clockwise. They will never be used for starting so were just cosmetic, I doubt many would notice the mistake, but I have to please my toughest critic - myself.
Fortunately there’s a step in the flywheel perimeter so I was able to conceal machining off the holes and fixing on a replacement ring approximately 3/8 inch in cross section. This gave me a second chance to cut the holes correctly. Wish all my screwups were as easy to fix and that I noticed them while the machine setup was still in place.
