View Full Version : 135 BCD Campy - how small can I go?
veggieburger
09-04-2018, 02:00 PM
Running a Daytona standard 10 speed crank, 53/39. Is there an aftermarket manufacturer that makes a small inner ring? Pretty sure I have seen a 38...anything smaller? Thx!
Hindmost
09-04-2018, 02:09 PM
Nope. No more real estate.
Mark McM
09-04-2018, 02:11 PM
Running a Daytona standard 10 speed crank, 53/39. Is there an aftermarket manufacturer that makes a small inner ring? Pretty sure I have seen a 38...anything smaller? Thx!
Two answers:
1) You can go down to 38 teeth on a 130mm BCD, but you can only go down to 39 teeth on 135mm.
2) You can go down to 24 teeth if you use a Tripleizer chainring to convert your cranks to a triple. You'll need a longer spindle for a triple crank, but since Daytona uses a square taper BB this is easy.
T.A. Specialites Vento-K Campagno 135mm tripleizer:
https://cdn.bike24.net/i/p/3/2/121423_00_c.jpg
veggieburger
09-04-2018, 02:16 PM
Nope. No more real estate.
Curses! Guess I'll just have to file off a few teeth and hope for the best. :banana:
Hindmost
09-04-2018, 02:26 PM
Now, a triple goes to 74 mm.
cachagua
09-04-2018, 02:43 PM
Curses! Guess I'll just have to file off a few teeth and hope for the best. :banana:
I think you'd get the same effect if you just filed all the teeth 1.5mm shorter? :banana: :banana:
Another option is to use the Willow triplizer for $35. If you have a Campy 135bcd crankset, you can get the 39t triplizer and then add a 74mm "granny" gear so you can go as low as 24t!
If you have a 130bcd crankset, you can get the 46t chainring and then a 74mm inner/granny gear that can go as low as 24t.
I have the 46t chainring and was planning on using a 30t, but that project is on hold. The rings comes with all the hardware needed too!
For more go here:
https://treetop.bigcartel.com/product/willow-chainring-tripleizer-130-135-bcd-options
Good Luck!
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