Chainring BCD Question
 

Hey
I've got a quick question
What would be the most likely BCD on a 1979 Sugino (motobecane) Crankset?

Thanks

forum would need either a crankset model name or a photo in order to give you a meaningful answer.

http://velobase.com/CatalogScans/Mot...ne_catalog.pdf

That's the 1979 motobecane catalog. My bike is a grand sport so it's a sugino 2NJX 2D crankset

Grand sprint not sport sorry

The pictured crankset very much appears to be a 110mm bcd Sugino Maxy. See close up showing big drop down from the small ring's teeth to the bolt circle, has to be 110.

this is the 110mm bcd so it accepts chainwheels down to 34T.

same bcd as the Mighty Tour model.

Thanks for the help Juvela and dddd.