Originally Posted by
SoSmellyAir
Unfortunately these slight variations exist between not only different brands, but also across different models of the same brand; I had to re-index the rear derailleur when upgrading from Mavic Aksium to Mavic Ksyrium Elite, and again from going from an 11-32 cassette to a 12-25 cassette (both 11 speeds).
Here's a Shimano Ultegra CS-6700 (11-28) for $60. I don't know if that is expensive or not but it is definitely less than either of my 11 speed Ultegra cassettes, which I got on sale.
Shimano Ultegra CS-6700 Cassette | Competitive Cyclist
Other options here for $11 more if you don't want 11-28.
Shimano Ultegra CS-67000SP Cassette | Jenson USA
Thanks! You answered my main question about the spacing, so I guess I’ll just factor in some adjustment time for future trainer sessions.
I do consider $60 a lot for a 10s cassette. Iirc, I got my 11 speed Miche Primato for about that much. I definitely don’t want to spend that for a cassette with a cog I’ll never use (the 11), and without one that I do want (who doesn’t love a 16? Bike component manufacturers, that’s who).