I’d like to buy a Tacx Flux S trainer but I can’t understand if I can use my old racing bike on it.
Instructions say that Flux S is compatible with every Shimano cassette from 8 to 11 speed, but my bike has an old 7 speed Shimano cassette. Does it fit anyway or it will be to small and there will be problems?!
Thanks for your help and sorry for my English.