Yo, just fitting my bike together, got a new set up you see. Got a king rear hub now, and stuck wheel on set up the gear for single speed. its 20-16 (too heavy ima change to 17). Everything looks and seems ok until i ride. This is what happens: When i put pressure on my left pedal, at a very certain point i feel and hear a clonk. Every time. I can put pressure on my right pedal n all and feel n hear nothing its always my left side at 1 point. I've narrowed a few things down. It cant be the hub itself, as the it is never at the same point of engagement and wheel is never in the same place when applying the pressure. The pedals are new, so wont be those. Everything is tight and in place properly as i can see witht he cranks and bb. The only thing that i can think of is the rear or front chain ring, at a certain point is being irratated with the chain. This is the only thing that stays constant too, because the change ring is always at the same place with the cranks etc. Maybe some slight chain suck at one point ? Hope i am not too confusing, it probably makes more sense to me than anyone else. But if you could try and help i'd appreciate it. edit Oh and the chain cogs etc aint new, the rear cog was not running with the chain and front cog before change. But the chain and front cog where running together