Genesis flyer owners

I had that problem and I changed my pedals, the stock ones are grim, cheap and nasty, but I found that the 'clanking' came from the free wheel, (thats assuming you haven't had her fixed yet) you could try feeding lithium grease into the free wheel mechanism see if it makes any difference, I had to replace mine as there was too much grit in it, you can service them but you need a special tool to get to the bearings even Sheldon brown recommends no even bothering with that as its waaaaaaay fiddly.

I'm taking my new Flyer in today with exactly the same sound/issue. I suspected the freewheel, as I'd had the same problem with my Charge from brand-new too. It's a real 'regular' sound, almost like a clock ticking. Only when pedalling reasonably hard too.

I swapped my Charge over to the fixed side, and the noise disappeared, so I'm getting a cog today, but still think they should fix/replace the f/w too!

**Just back from the as yet un-named bike shop. The manager took a look and even went for a ride, but couldn't hear anything! I explained that it was probably due to the wind in his ears, and that I wasn't in the habit of making things up. But he still wouldn't replace the f/w, even after another member of staff took it for a spin and could definitely hear the same thing. The managers advice was to let the chain-set "bed in". So I'll have to take it back in a week, when it's less windy. ;o)