Thought I'd try here as a last resort. Bike shop have inspected it many times but were unable to find root cause. Many bike noises are hard to pin down. This one is almost certainly harmless, yet annoying.
Basically whenever you ride off shallow curb, over a speed bump, or over some other unevenness in the road surface, hear a single 'click'.. it's hard to describe in words what exactly this click sounds like. Not every time, but most of the time. It happens even when walking with the bike, when you wheel it along and go over a curb.
Terrible video:
https://drive.google.com/file/d/0B6doSN ... h1eEk/view(you see it happening over a large speed bump here, but it happens over much smaller bumps too)
Road bike, giant defy 2:
https://www.giant-bicycles.com/gb/defy-2-2016Noise occurs often (every few minutes when riding) but hard to consistently reproduce on demand. Which means bike shop guys actually have to go outside and ride it for 15 mins, something I'm not sure they have the patience for. I am currently based in South Korea so various language and cultural differences.. one guy in this shop speaks decent English but still.. unfortunately my Korean is not good enough..
Noise started as soon as I bought the bike brand new a year ago and has never really gone away. The shop where I bought it, a couple of times they did something that made it go away temporarily but it always came back. The most promising time, they said they had rebuilt the front wheel, that there was something with the spokes that was causing the noise, but it came back within a couple of weeks, and I am not convinced if that was really the problem.
It feels a little bit like a spring, in that if it clicks once, then if you try to get it to click immediately after, the click will be weak or absent, but if you give it 10-15mins to store up the energy.. it will click quite loud.
I am wondering if it's something with the caliper brakes.. or perhaps the mechs.. or the headset.. it's nothing to do with the pedaling action that's for sure.
Any bright ideas? I don't think any bike shop here will be able to figure it out..
Thanks!