I see this a lot in the British TT forum. For same ratio we know the bigger diameter cogs and rings, the more efficient. Ok, I'll run with that for now.
I run 1x already, so cross chaining is out of the discussion of efficiency here. I'm not going back. So, that simplifies this.
I'm thinking of experimenting with drivetrain optimization now that my aero setup is pretty good for now.
I'm thinking of buying a pair of R8000 cassettes to frankenstein together and a new pair of larger chainrings.
Right now I run a 54T 1x with either a 12-25 (flat TT) or an 11-28 (hilly TT). This seems to work well. I'm rarely in the 11, 12, or 25/28. I'm usually in the "meat" of the cassette with a decent chain line.
Currently chain line looks "optimal" on the 4th cog. So that would be either the 14t or 15t depending on the setup.
Now, the conundrum. My old Felt seems to not like big chainrings. The 54 looks fine right now. But the 58 or 60 I'd like to run for the "junior cassette" experiment seems I'd need to space the big-ring out. Then, it would line up best with the 3rd cog instead of the 4th.
Who has gone down this rabbit hole, and where did you end up?
I run 1x already, so cross chaining is out of the discussion of efficiency here. I'm not going back. So, that simplifies this.
I'm thinking of experimenting with drivetrain optimization now that my aero setup is pretty good for now.
I'm thinking of buying a pair of R8000 cassettes to frankenstein together and a new pair of larger chainrings.
Right now I run a 54T 1x with either a 12-25 (flat TT) or an 11-28 (hilly TT). This seems to work well. I'm rarely in the 11, 12, or 25/28. I'm usually in the "meat" of the cassette with a decent chain line.
Currently chain line looks "optimal" on the 4th cog. So that would be either the 14t or 15t depending on the setup.
Now, the conundrum. My old Felt seems to not like big chainrings. The 54 looks fine right now. But the 58 or 60 I'd like to run for the "junior cassette" experiment seems I'd need to space the big-ring out. Then, it would line up best with the 3rd cog instead of the 4th.
Who has gone down this rabbit hole, and where did you end up?