I see. I crave your indulgence for the following, likely of little interest to anyone but me.

The fork on my Felt TK-2 (sprint geometry, true track bike) has a fork drilled for a brake, which is why I chose it over the other aluminum track bikes available then.

MIA (stolen): 1983 Bianchi Eco Pista. I installed a short-rake chromed cro-mo road fork and a front brake. (I've held on to the celeste fork from the Eco Pista as a keepsake.) It was my favorite bike ever, until I bought my first aluminum bike.

That was and is my first-year-of-production Specialized Langster, which came with front and rear brakes and a flip-flop hub and has road racing geometry, so you've got me there.

Finally, when I bought a late-'60s Campy Record-equipped Peugeot track bike from a little old lady about 25 years ago (her late husband had bought it new when the two lived in France), it came set up with a rear Mafac brake that had been installed using Pletscher rack mounting hardware, exactly as I had done when I started racing a Helyett track bike in 1964, when I was 13.

[Edit: I misremembered. Had I bothered to walk into the next room to check before posting, I'd have seen that the Peugeot's Mafac brake was installed using a hole in the seat stay bridge, probably drilled for the husband at the shop where he bought the bike.]

Thinking about it, I raced the Helyett only once on the track. All my other races with the bike were on the road. At that time, the ABLA still allowed the use of a track bike in road racing, as long as the bike had at least one working brake.