King of the Hipsters
Join Date: Jan 2005
Location: Bend, Oregon
Bikes: Realm Cycles Custom
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I just went out and looked at my RD cranks and I see the issue.
I can't imagine that Sugino spaced out on where to drill the hole.
They had a reason.
Anyway, I like this crank because I change chainrings and cogs more often than most people.
I guess I like to experiment.
This crank lets me put the chainring on either the inside or the outside of the crank spider arms, which gives me a lot more options on my chainline.
Not all cogs line up the same, and EAI cogs have two sides that put the teeth different distances from the center of the hub.
With an EAI cog and a Sugino RD crank, I have four possible chainlines.
An EAI cog, with the flange against the hub, and a Sugino or Shimano chainring on the outside of the spider arms gives me a perfect (absolutely perfect) chainline on my Pista.
Further, I like the 130mm BCD of the Sugino RD because it lets me run Shimano Biopace chainrings.
Harriscyclery has a long list of 130mm BCD chainrings in stock.
When and if I build an ice bike on a Steamroller frame I will use a Sugino RD crank.