I’m wondering if it’s possible to use a 12 speed Sram on my trainer with an 11 speed cassette if I make sure to use the straightest possible chain line. If I put the trainer on ERG I wouldn’t need to shift, so I guess it should be fine, but I’m not sure, maybe I run the risk of damaging the chain or the cassette?
My GF also uses the trainer with an 11 speed shimano, so normally I just use another bike which also has an 11 speed shimano group. But I recently bought a new bike with Force AXS and I don’t want to change the cassette every time.