STI Trouble

[chicagorider]

Hi all,

I lack the vocabulary to describe this problem well... I'm having an issue where if I try and shift up the rear cassette (on a DA9100 shifter), then the metal lever that is actuated by the shifter would get stuck... I've made a video of it (please excuse the background noise).

https://photos.app.goo.gl/mm9ntT1MPhEwY7bo7

Before I start taking it apart etc. wondered if someone knows what's going on. I've had similar problems before when the hoods were not on properly but I don't think that's the issue here.

Thanks PL!

[mass_biker]

Could not open video but I had problems with my STI right (rear) shift lever getting stuck on occasion.

One time I managed to “unstick” it by spraying the (shift) interface with lube. There was some gunk stuck in there.

The other time, it was revealed on an overhaul that the cable had become frayed and some burrs were sticking in the housing.

MB

[John H.]

Check the rear cable. This shifters are know to eat/fray the derailleur cable up at the shifter.