Old School Chopper Frame Fabrication - Knucklebuster
Old School Chopper Frame Fabrication - Knucklebuster
Old School Chopper Frame Fabrication - Knucklebuster
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Figure 5<br />
The frame in Figure 5 is on the line but I took the shot from a slight angle so it only appears skewed from this vantage point.<br />
At this point in time I take measurements from the extreme ends of the long dummy rear axle bar to an imaginary point way<br />
out in front of the bike on the control line as a quick double-check that the axle plates are indeed square to the frame<br />
centerline.<br />
There are countless ways of temporarily holding and aligning the neck-piece with the frame. If you have the benefit of<br />
working with a jig it is simply a matter of just setting the neck into your steering head fixture. If you don't have a jig however<br />
you'll have to improvise some way of attaching the neck-piece onto some type of long rod that you can use for alignment.<br />
You can develop some pretty sophisticated fixtures for doing this but I've found that a true <strong>Old</strong>-<strong>School</strong> method from the<br />
sixties works pretty good.<br />
It just so happens that 1.25" ERW frame tubing has almost the same O.D. as the raw steering neck I.D. and to top it off ERW<br />
tubing has a nice straight seam running down the inside that we can use as a reference for aligning the neck.