Joined: Apr 2006
Posts: 4,058
Likes: 943
From: Washington County, Vermont, USA
Bikes: 1973-4 Gitane Tour de France, early 1970's Lejeune, 1970 Italvega Super Speciale, 2010 Surly Long Haul Trucker 26
Yes, of course, I should have thought of that--super mirages did come with that SR crankset, which I'm quite sure had an appropriate spindle for a double. Maybe the SR has a much lower Q-factor, and so doesn't require as long a spindle? I'm too lazy to look it up, but it could be the same spindle worked for both cranksets.