Anyone know whether the Suginos put the pedals tighter in (narrower "tread" or "Q-factor" for the jargon-inclined)? Seems they might since the spindle is shorter with the chainring on the outside of the spider for a 42 mm chainline. IROs have a longer spindle and ring on the inside for the 42 mm chainline. Then again, the Suginos are indeed converted road cranks (as others have pointed out), so maybe the IROs have an adjusted pedal positions (e.g. narrower crank arms) to compensate? Perhaps this all has a piddling effect on pedal strike relative to just using shorter cranks and I'm wasting time thinking about it.