Drilling out rear clutch

[bigdaddy]

I have instructions from the Hetrick kit I bought with the sizes, etc. What kind of bits have people used? I tried it and can barley scratch the surface of course all my drill bits are dull or missing :mad: Let me know if anybody has done this.

[BradLoomis]

If you don't have an accurate gram scale that can handle the weight of each shoe individualy... I wouldn't suggest doing this. Remember that the clutch will spin in excess of 12,000 rpm.