I have a 1983 Bianchi which has single pull Modolo brake calipers. These a less expensive knock off of Campagnolo Nuovo Record/ Grand Sport calipers of that era. I would like to upgrade the calipers to a more modern double pull variety. The Modolos are mounted to the fork or seat stay cross brace with a threaded end shaft, which is the same diameter as the hole in the fork/brace. It extends through an is held by a regular hex nut and a washer on the outside.
The modern calipers use an internal threaded insert collar with a hex key (allen) end which extends into the fork/brace and screws on to the caliper shaft to take the place of the nut. The shaft has a shoulder on the caliper side the same diameter as the hole in the fork/brace, and a reduced sized threaded area which accepts the insert collar.
Will the modern brake calipers work on the vintage frame without drilling out the holes in the fork/brace? I'm sure going to forget about this upgrade if enlarging the holes is the only way to do it. I could potentially ruin the frame and or fork if I screw up! Any advice would be appreciated
The modern calipers use an internal threaded insert collar with a hex key (allen) end which extends into the fork/brace and screws on to the caliper shaft to take the place of the nut. The shaft has a shoulder on the caliper side the same diameter as the hole in the fork/brace, and a reduced sized threaded area which accepts the insert collar.
Will the modern brake calipers work on the vintage frame without drilling out the holes in the fork/brace? I'm sure going to forget about this upgrade if enlarging the holes is the only way to do it. I could potentially ruin the frame and or fork if I screw up! Any advice would be appreciated