has anyone widened a brake bridge hole in an old steel frame to fit modern calipers?
It's the leading face that needs to be widened and unless your frame has a particularly strange geo, you won't get a drill inside the triangle.
Have a look on Sheldon Brown, he covers fitting modern brakes to an old frame: I think it's in the dual pivot brakes article.
Gotcha, cheers!
I used a regular cordless drill with a good HSS drill on my GF's mixte. Fork was easy and the rear bridge turned out pretty rough, but it works well enough.
@yokes started
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It's the leading face that needs to be widened and unless your frame has a particularly strange geo, you won't get a drill inside the triangle.
Have a look on Sheldon Brown, he covers fitting modern brakes to an old frame: I think it's in the dual pivot brakes article.