Bicycle gear shifting is synchronized so the chain moves to the next gear, except the shifts are not perfect, just good enough. I finally decided to adjust the spacing between the gears so the shifts are much more accurate.
For stiffness the larger 6 gears are attached in groups of three, with the middle one not being able to mount independently, which didn't allow changing the spacing of the sets of three. Recently Campagnolo started selling a different design gear set with only the larger triplet, and by combining two different gear sets I was able to get the the smaller triplet in separate gears, so I was able to shim the spacers of 8 of the 11 gears to get near perfect shifting. Now I want to make my own triplet for stiffness using the spacers from another triplet with the necessary shims. The first picture shows a drilled out triplet. The rivets are 1/8 inch, odd for an Italian product. Does anyone know if stainless rivets like these are stock item, and is there a press mandrel that produces the flat ends or did Campy probably make custom tooling?
The gears I am using are larger than the one shown and I can allow the rivet head to stick out about 2 mm on both sides.
For stiffness the larger 6 gears are attached in groups of three, with the middle one not being able to mount independently, which didn't allow changing the spacing of the sets of three. Recently Campagnolo started selling a different design gear set with only the larger triplet, and by combining two different gear sets I was able to get the the smaller triplet in separate gears, so I was able to shim the spacers of 8 of the 11 gears to get near perfect shifting. Now I want to make my own triplet for stiffness using the spacers from another triplet with the necessary shims. The first picture shows a drilled out triplet. The rivets are 1/8 inch, odd for an Italian product. Does anyone know if stainless rivets like these are stock item, and is there a press mandrel that produces the flat ends or did Campy probably make custom tooling?
The gears I am using are larger than the one shown and I can allow the rivet head to stick out about 2 mm on both sides.