Well I went to my Co-op tonight to find a "sacrificial" Huffy frame to destroy for my brake project, but found nothing. So back to the drawing board... I have a vision of the brake caliper drop part that will allow for a few different lengths of drop based on the the position of the attaching bolt. Since a bit of material will be shaved off of the bottom of the brake bridge there are a couple of grams to lose on the frame, but there will be some weight added for the drop part. By carefully calculating the position of the drop part it could be either braced against the lip of the existing bridge on the top or by judicious cutting on the bottom of the bride it will stabilize the drop from movement between the rear stays. Here is the mock up of the drop part as a universal length extender:
When I know the exact amount of length it needs to extend the drop part can be shaved to length and finished as is appropriate for a Campy part.
This is gonna be fun. Smiles, MH