Polo Bikes

I want 700.

I just want an idea about a decent distance between tire (28c) and crankset to avoid toe overlap. a sketchy idea.
OK, the distance you need to know is the front centre (distance between the front axle and the BB). Within this distance, you need to be able to fit:

• Your crank (170mm)
  
• The radius of your wheel, including tyre (336mm)
  
• Your foot (depends on size of feet, position on the pedal, shoes etc.)
  This gives a total of 506mm + a bit for your foot.
  
  

The front centre measurement will be a function of:

• Effective Top Tube (ETT) length
  
• Head + seat angles
  
• Fork length
  
• Fork rake/offset
  (There may well be other factors, a good framebuilder* should be able to advise on this)