Today I did battle with the knee offending horn…
The bolts holding the horn on the frame are carriage bolts with square inserts keeping the bolt from turning, unfortunately the one on the left had rounded out and was free spinning. because of being smooth on top and so rusty, I couldn’t get hold of it in any way to continue spinning the nut off…
Horn Bolt “Heads”
I ended up going for an all out assault.
The remains after the assault
I drilled out the head of the bolt from above to break it free, then the rest of the bolt dropped free, and so did the horn.
Drilled out