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@gbj_tester
The difference is that using a long axle in a skinny frame might mean the front dérailleur can't reach far enough to clear the chain in top gear.
Get a Shimano UN55 110mm* e.g. http://www.chainreactioncycles.com/Models.aspx?ModelID=71369
*based on this%2520Crankset%2520and%2520BB%2520Combination%2520Chart.pdf) Shimano document