Hi All,
Has anyone experienced issues with Hope Trial Zone disc setups? Specifically with the rear calliper making a "clunking" noise when on the rear wheel?
I love a quiet riding bike, so find this super annoying!
For context, below is my setup:
- Frame = 24" Inspired FourPlay, Brake = Hope Trial Zone, Hub = Hope Pro 2, Rotor = Hope Trial Zone (200 mm).
In detail, I tend to find that when on the rear wheel, a clunking noise emanates when completing forward/rearward/upward moves.
Below follows the steps I've taken to resolve:
1) Early on, I found that the upper most frame/adapter bolt would routinely work loose. I put this down to torque reversals, which eventually would ruin the threads inside the adapter.
2) I then replaced the adapters, used longer bolts so the threads of the adapter are fully utilised, applied a small amount of thread lock and applied a decent torque (11 nM). This appears to have resolved that particular issue.
3) I still was getting clunking noises from the rear, so threw away the Tarty bikes chain stay protector and adapted a tube to dampen chain noise. OK the bike now runs quieter, but still the clunking noise is present...
4) I then wondered if the rotor itself was working loose, so replaced the hub bolts and torqued them upto 6 nM. They appear to be holding fine now, and still the clunking noise continues.
5) With the bike on the flat, I clamped the rear brake and rapidly rocked the rear wheel back and forth to re-create the forces. Definitely the noise is coming from the calliper.
In conclusion, I believe that the pads probably "rock" to some degree within the calliper, despite them bolt holding the pads in place being tightened to 5 nM.
Has anyone else experienced similar issues?
Super annoying if you like a quiet running bike!
Cheers
Ben