Thanks to all who responded.
I think these are cobalt bits. They are goldish colored. They are 1/8"
bits, and are marked "Champion" and "CO - US". This was a new one.
I bought them years ago as "the best bit I could buy" and drilled tons
of screw holes through steel plate that I used to construct laminated
wood and steel beams for my garage -- 24' spans.
It was not "walking" on the clutch fork -- just would not bite. The bit
still feels sharp.
I know about the feed and speed stuff. I was drilling slowly and using
oil. Looked like the cast iron clutch fork was just way to hard for the
bit. I thought cast iron was soft and easy to drill. Doesn't make sense
to me.
The clutch fork pin is broken off, and I'm trying to drill a hole in the
opposite end of the clutch fork, from the pin, so I can punch out the
broken clutch fork pin and remove the clutch fork from the shaft. Per
Nelson.
Beginners.....
Don Malling
Don Malling wrote:
> What sort of drill bits do you need to drill into the clutch fork? I
> tried some bits that I used to drilled holes in a "I" beam, but they
> wouldn't touch the clutch fork.
>
> I'm trying to follow Nelson's article on how to remove a broken clutch
> fork pin by drilling a hole in the opposite side of the pin hole and
> tapping it out with a pin punch.
>
>
>http://www.buckeyetriumphs.org/technical/Clutch/ClutchForkPin/RemovingBrokenClutchForkPins.htm
>
>
>
> Don Malling
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