Originally Posted by marked001
I"m going to be using some deep v's built up by Iro...and they use Iro's hub... not sure what that hub actually is... so once i get the wheels..is there any way for me to 'measure' anything? or should I just risk and go with your recommendations? much appreciated guys.
sheldonbrown.com has a list of hubs, sprockets, and the chainline they'll yield.
if you follow his links to harris cyclery's parts-->cranks, you'll see what BB's will yield what chainline.
IRO 's hubs (made by formula), with a DA cog, wants a 42mm chainline--that means that a straight chain will be 42mm away from the centerline of the bike. so you want to get cranks and a BB with the right length spindle, so that you'll get a 42mm (or close to that) chainline.
once it's all on, you can double-check by measuring from the center of your seat tube to the center of your chainring.