Originally Posted by
DannoXYZ
1. Measure the distance between the inner-surfaces of the dropouts.
2. Then measure the distance between the ends of the axle locknuts (not to the ends of the axle). This is the surface that rests against the inside of the dropouts.
Compare the two measurements.
The simple, logical things that we (I) don't think of.
Thanks also to kingsting. I don't have the bike here, but don't think there's a sandwich bolt. I'll certainly look, however.