Originally Posted by
Roelof
The link does not work....
I have made once a flywheel with that taper, it was drilling a hole of 8mm and then with a small toolbit in the lathe with an angle of 7.5 degrees enlarge the hole.
I can't seem to get links to work. Well it's ebay number 113268381297 if you're interested.
I used to do it the way you describe with a boring bar but getting my compound to the right angle was trial and error each time and a real pain at that. So I started setting the compound at 7, which was my best guess, and cutting the flywheel and then making a collet without moving the compound. The plus side to this is that my collets fit so perfectly into their mating flywheels that its almost difficult to remove them.