s14phoenix Posted February 16, 2017 Share Worn cassette or the amount of chain wrap on the cassette. If the B screw is too far in and the derailleur thus pushed back too far away from the cassette. Link to comment Share on other sites More sharing options...
CAAD4 Posted February 16, 2017 Share Or dilute your Cytomax in the bottle a little more.... Link to comment Share on other sites More sharing options...
Grey Hubs Posted February 16, 2017 Share On what type of frame? Carbon/Steel/Alu? If there is enough flex in the frame (e.g. steel frame), you might find the chain will slip under big power on the small cog because of a slight twist in the rear triangle. Iv'e seen this happen once on my steel MTB frame when a 100kg+ chap climbed on the bike and stomped on the pedals in the small cog - chain slipped. I could not repeat this with my weenie power output... just a thought. Link to comment Share on other sites More sharing options...
georges Posted February 16, 2017 Share Hi, Check your front chain ring and if the teeth are shark like in shape this could be you problem Link to comment Share on other sites More sharing options...
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