Current Projects chat and miscellany

problem?

almost centred:

definitely not centred:

what could it be?

4 possibilities as far as I can work out:

• Wheel bearings loose: causes wheel to flop over sideways but leaves it central between the chainstays.
  
• Wheel incorrectly dished, centred between the chainstays by moving right-hand end of axle forward, but still not centred between the seatstays.
  
• Rear triangle bent such that right-hand track-end/dropout is further out than left-hand one.
  
• Rear triangle bent so that right-hand track-end/dropout is lower than left-hand one. Wheel is centred between chainstays but lies over sideways closer to right-hand seatstay (similar to #1).
  
  

Edit: 5. Combinations of very minor instances of several of the above.