focus jam2 6.8 cassette issues.q

[M-Bon-focus-jam2-6.8]

Hello, new here. Thanks for letting in.

I am riding a fantastic focus jam2 6.8 with shimano cs-m7100 12s cassette, now after 8 times of serious riding are the highest 3 (so the smallest chain wheels ) worn out already. When pushing with power the chain is jumping on it.

U already made the chain shorter but its not getting better.

Are there cassettes made of better/stronger material then the one I am using (shimano cs-m7100 12s)



Thanks already.

In love with the e-MTB !

 

[Jackware]

Can you adjust the b-screw to improve the chain wrap on the smaller cogs?

 

[steve_sordy]

How many Km have you ridden? Your jumping chain problem sounds like wear to me.

 

[M-Bon-focus-jam2-6.8]

How many Km have you ridden? Your jumping chain problem sounds like wear to me.

Thats correct. But I just have the bike, maybe 400 km on track.

To me it loods like the cs-m cassette materiaal is not strong enough for the power of the bike...

 

[M-Bon-focus-jam2-6.8]

Can you adjust the b-screw to improve the chain wrap on the smaller cogs?

There was a bit of space to do this.

But I think it's wearn out....