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-   -   Checking BCD (https://www.bikeforums.net/classic-vintage/1170069-checking-bcd.html)

sloar 04-07-19 05:01 PM
Checking BCD
 
i have a 5 bolt chainring with a distance of 49.5mm, it’s not on the chart. What’s the BCD?

merziac 04-07-19 05:15 PM
Originally Posted by sloar (Post 20874041)
i have a 5 bolt chainring with a distance of 49.5mm, it’s not on the chart. What’s the BCD?
According to the Park CDG-2 paper chart, 50mm is 85 BCD.

sloar 04-07-19 05:22 PM
I just found it online, it’s 86mm. Not much out there for replacement rings.

ThermionicScott 04-09-19 10:09 PM
Originally Posted by sloar (Post 20874065)
I just found it online, it’s 86mm. Not much out there for replacement rings.
Spa Cycles keeps them in production: https://www.spacycles.co.uk/m2b0s149...gs-Stronglight

Lascauxcaveman 04-10-19 12:08 AM
And shipping form Old Blighty is quite reasonable; at least from Spa Cycles, Harrogate, England. :)


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