crank to chainstay clearance?

[bikenut2010]

just wondering what the tolerances should be regarding equal clearance from crankarm to chain stays... I have an older bike with a cottered crankset and the non drive side is around 3 mm from arm to chain stay but more like 10 mm on the drive side... :roll:

 

[Midlife]

Blimey, for some old cottered chainsets you had to take a taxi to get from the crank to the chainstay.........what's the chainline like?

Remember sometimes you had to have a lot of room for a chainguard and, god forbid, a chainbath.

Shaun

 

[bikenut2010]

front 44, rear 42 ( 120 rear dropouts, 5 speed regina fw )

 

[Midlife]

..........you lost me

Shaun

 

[lewisfoto]

Are you thinking that the 3mm is a bit narrow? Replacing the spindle should be easy, once you find the right spindle. On the other hand old solid steel cranks should have very little flex.

 

[bikenut2010]

..........you lost me

Shaun

you mean the measurements?

44 mm from centre of seat tube to middle of point between chainrings, rear as per http://sheldonbrown.com/chainline.html

is that the right way?