I started off by machining the back plate to accept a 1.25" x .058" aircraft chromoly tube...
The stem has bee designed to match his current set up and marked appropriately for the center line and heights...now just to start cutting and facing...
The stem is rough cut to the required dimensions and then faced on the mill to insure it is straight and perpendicular to the center axis.
A quick peek to insure that the back plate machining and counter sunk relief match the tubing profile and wall thickness.
The binder is then cut on the mill to the OD of the stem tubing...
With everything machined and set, I insure the stem is upright and square to the table, then tack the faceplate on. With a 6' tube installed, I then use the height gauge to gently align the orientation to insure the bar will be perfectly positioned in the stem.
Once the position is set, everything is welded up and secured...
Next up, I drill and cut the slot for the binder relief, allowing the stem to tighten on the steerer tube.
Checking the new stem to see how it matches up with the original...although a different shape, all the important datum points match up.
A little time in the paint booth and bake box and we have a graphite black ceramic coated beauty...
rody
1 comment:
Looks great!
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