Our friend Joel has been moving fast on his Shovelhead project. It's got the aforementioned Shovelhead motor, and one of those Harley frames that was originally equipped with those godawful pogo seats.
Joel has a much more tasteful and tiny seat in mind for this bike, and but he didn't want to weld a hinge tab to the top tube... not even a nice one.
So, he knocked out the heavy chunk of cylindrical steel you see here. Trouble was, he didn't have a plan for securing it inside the frame.
That's where my cheesy BMX roots came in.
By chucking this baby up in a lathe and taking a couple swipes at it with some drills and milling bits, we devised the contraption you see here:
The photos tell the story better than words can>
After Joel popped the centerbore down the shaft, Scott here cut the wedge shape off the end with a bandsaw.
con'd...