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Rival etap shifting issue

Old 08-05-23, 01:27 PM
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Rival etap shifting issue

Hi,

I'm a long time mountain biker, but relatively new to road biking. I recently got a Bianchi Infinito XE with etap AXS rival transmission 2x, 36 cassette.

My issue is this: in the rear cassette it has trouble shifting from the smallest cog to the second smallest cog under the slightest load. I have checked the derailleur hanger, b gap, limiting screw and everything looked fine.

I took it to the bike shop. The guy messed with the B gap, saying that this type of bike hanger doesn't work with the sram b gap gauge. He changed the b gap, but it still doesn't shift under the slightest of load. He said this is normal because you're supposed to go fast at those gears. In my opinion, his explanation falls short because shifting in that direction usually occurs in anticipation of extra load.

all other gears shift under moderate load just fine and the shifting from the second smallest cog to the smallest is fine as well.

I was wondering what you guys think.

Last edited by starwave; 08-05-23 at 05:24 PM.
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Old 08-07-23, 09:51 AM
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Originally Posted by starwave
Hi,

I'm a long time mountain biker, but relatively new to road biking. I recently got a Bianchi Infinito XE with etap AXS rival transmission 2x, 36 cassette.

My issue is this: in the rear cassette it has trouble shifting from the smallest cog to the second smallest cog under the slightest load. I have checked the derailleur hanger, b gap, limiting screw and everything looked fine.

I took it to the bike shop. The guy messed with the B gap, saying that this type of bike hanger doesn't work with the sram b gap gauge. He changed the b gap, but it still doesn't shift under the slightest of load. He said this is normal because you're supposed to go fast at those gears. In my opinion, his explanation falls short because shifting in that direction usually occurs in anticipation of extra load.

all other gears shift under moderate load just fine and the shifting from the second smallest cog to the smallest is fine as well.

I was wondering what you guys think.
It sounds like it is out of adjustment at the lower limit. Like the derailleur is only moving "part way" in that shift. I would suggest starting from scratch and doing whatever setup routine the system requires. Essentially a re-boot.
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