As I posted yesterday, this is my Stucchi road bike from 1972. Everything is original, but the previous owner or maybe the constructor himself drilled the bigger chainring and removed half the teeth.
So, I did some more tests on the Stucchi, and the chainring seems to ride smoothly. I counted 26 teeth, and 25 are missing, but the shifting still works well without any issues. I lowered the front shifter, and the change is smoother than before. The missing teeth don’t seem to complicate the process. I tried unsuccessfully to make a video of my tests, but my editing skills weren’t up to the task.
Thank you all for the support!
by Swimming-Raisin-5915
7 Comments
That’s a nice old-school classic bike . I’ve never seen teeth removed from chainrings before, I’ve seen them drilled before, and I’ve even drilled them myself before. I hope you keep your bike as it is and enjoy riding it.
Maybe done for weight?? definitely intentional, not sure why it was done but this is the weird part of old bikes haha
Shit, that was built by Galmozzi for Stucchi in the 1960s
That’s pretty cool!
Chainring looks awesome! If it doesn’t make a difference you should def keep it.
If you look at newer rings some teeth are shaved down for shifting. I think this was more for weight but 1” pitch chains did this very thing so I kinda get it.
Schwinn made skip tooth rings at one point. I have no experience with them, but there’s precedent for this approach.
https://images.app.goo.gl/Vp8X2bu9AegPtpSt5