colinjohnchapman
New Member
i have just taken my summer rim brake bike of zwift trainer and put the rear wheel back on.
However i now have weird problem. the chain moves up from small front ring to big ring and back when on a bike stand.
But if i try and start riding in the big front ring the chain drops immediately.
But i can start in small front ring ok and i can change up to big ring when riding ok . Sora groupset which has been fine until now.
Have tried a different rear wheel (with same size cassette 11-28) made no difference. checked chain wear and it is not an issue.
any ideas?
However i now have weird problem. the chain moves up from small front ring to big ring and back when on a bike stand.
But if i try and start riding in the big front ring the chain drops immediately.
But i can start in small front ring ok and i can change up to big ring when riding ok . Sora groupset which has been fine until now.
Have tried a different rear wheel (with same size cassette 11-28) made no difference. checked chain wear and it is not an issue.
any ideas?
