i’ve a Rdley Kanzo Fast with Sram 12 speeds xplr on a Elite Direto xr trainer with Zwift cog.
Everything is mounted correctly but het runs extremely heavy and the chain is not tight enough but its in a straight line. I tried to swich gears on my bike and also change gear with the Zwift gear plus and minus, bur it keeps very heavy and not smooth.
Anyone knows what to do?
I’m consider to changing the Zwift cog with a SRAM 12 xplr cassette on the Ekite trainer, but will that sokve my problem and is this compatible?
The Cog is mounted on a Shimano compatible freehub, so if you want to put a SRAM 12 speed cassette on it, you would also need an XDR freehub body: https://www.elite-it.com/en/products/home-trainers/ecosystem-accessories/freehub-sram-xd-xdr
Whether that would help is hard to say since I’m not sure what the problem is. It is common to experience unexpectedly high resistance on Elite trainers at low power levels. That’s why Zwift offers the 18 tooth Cog for Elite and 14 tooth for other trainers like Wahoo. Some people have found it necessary to use an even lower gear, so a cassette would let you do that. But your comment about the chain not being tight enough - I’m not sure what that’s about. We do hear from many Wahoo trainer users who fail to install the drive side adapter on the trainer so the frame rubs on the Cog, but I don’t think I’ve heard of that happening with an Elite trainer. You could verify that the frame is not touching the Cog.