Yes, another vote for loose headset. They can be hard to see on a cursory inspection, esp. if it's just a little loose, but what you're describing is exactly behavior I would expect from one. What i do is lock the front wheel with the brake, put my stomach on the seat to weight the bike, and try rocking back and forth. The only other time it was anything else, in my experience, is when I was assembling a cheap cruiser and there was a similar knocking, but it was a poor-fitting stem quill rocking back and forth in the steerer.
You might also check your wheel bearings--try moving the wheel side to side in the fork to see if there's any lateral play. On Wednesday, May 23, 2012 1:22:35 PM UTC-7, JL wrote: > > I rode the Rambouillet on my morning commute today - something I > normally don't do. I usually ride another bike. I got to my > destination and realized there was an odd knocking sound coming from > the front of the bike. When I use the front brake firmly and un- > weight the rear wheel it clicks/knocks a single time and feels like > the bars/etc shift forward. A slight pull on the bars toward myself > results in the opposite happening. I could be imagining the movement > but not the sound nor the click. Any idea what could be causing this? > > I checked the front brake it was tight and aligned. > > The front pads are secure and aligned right as well. Are they grabbing > the wheel then sliding with the fork flex? > > The stem is in good condition and tight > > The brake levers don't move and they are tight. > > Headset loose? It isn't visibly. I'll check when I get home - and > recheck the rest of the things. > > The odd thing is that it made a single click and it must click forward > before clicking backward to replicate it. > > Any ideas as to what is going on here/what else to check > > Thanks > JL > > > -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To view this discussion on the web visit https://groups.google.com/d/msg/rbw-owners-bunch/-/oX2oi1AAqVcJ. To post to this group, send email to rbw-owners-bunch@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en.
