Bike Forums - View Single Post - Issues with disc brake adapter upside down

04-07-23 | 03:21 AM

#1

digger

Senior Member

Joined: May 2002

Posts: 2,316

Likes: 205

From: Likely North of you.

Bikes: 2020 Trek Domane SL6, 2021 Salsa Cutthroat 600, 2018 Giant Trance 2, 1998 Marinoni Turismo, 2016 Rocky Mountain -20 fat bike, mid-80s Velo Sport single speed, 2020 Fyxation Quiver

Issues with disc brake adapter upside down

I recently installed post mount TRP Spyres on an IS mount using IS to PM adapter on 160mm rotors (SM-MA-R160P/S).

When the adapter was mounted with arrow up, the pads only contacted half the rotor.
When the adapter is mounted upside down, then the pads contact the full rotor, I can see the top of the rotor level with the top of the pads and the barrel adjuster is pointed up at the cable run at a good angle.

It is the same situation for front and rear.

Is this normal or expected? Have I the wrong adaptors? I can’t seem to see a safety issue with this.

Thoughts?

Reply

0