Seat post diameter

[Nibor]

go to your LBS the have a stepped tube thing for measuring seat tubes

 

[Daddybus]

Should have measured or had it measured ...I just bought the same size as was marked on the old seat post... But looking at the old seat tube clamp bolt now, it looks like a boomerang, as if the previous owner had trouble tightening it up?... Anyone want to buy a brand new 27mm seat post, much cheapness.. ha

 

[e-rider]

25.4
27.0
27.2
it should be one of those at a guess

 

[mikeymustard]

Well it isn't gonna be 25.4 if a 27 is flapping is it? lol

 

[mikeymustard]

a drinks can shim will do the trick; there may have been a 27 in there for a reason - like the 27.2 was too tight. You never know

 

[Daddybus]

I think I'll have to invest in a vernier

 

[Daddybus]

@mikeymustard good idea! Might try a drink can shim just to see if it fits ....Carling or Stella?

 

[mikeymustard]

no wife beater in a classic build please!

 

[biggs682]

@mikeymustard good idea! Might try a drink can shim just to see if it fits ....Carling or Stella?

Coke zero ones are lighter in weight

 

[Daddybus]

^