Help needed ! Specialized Strongarm's

waxxer_1

Dirt Disciple
Does anyone know what the pcd is for the strongarm cranks as I have just purchased a set with steel rings and want to change to ally.
I will take some measurements and post later
Cheers
 
lewis1641":qfp5r9ao said:
dont know the pcd but mine are "compact"

=94mm PCD/BCD

There were also newer 4-bolt ones, which would be 104mm.

I've not seen any standar 5-bolts ones, but I'm not an authority, so they may have existed.
 
Measure center to center on 2 sequential holes in mm then multiply by 1.7 for 5 bolt and 1.4 for 4 bolt patterns and bingo you've got the BCD.
 
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