After my very old magnetic trainer died a quick death last week I just ordered a Wahoo Kickr Core . I own an old road bike with 7speed and was wondering if I can put the 7-speed CS-HG200 cassette 12-32 on the trainer. In the manual it says you can use a 8/9 or 10 speed with the included 1,8mm spacer. Maybe it is possible to put another spacer behind the cassette?
Or is it a bad idea and I should buy a 8-speed only using the first 7 gears?
THANKS a lot