As suggested if there is enough room in your track ends.... flip flop hub, double up front..... stop, loosen/take of wheel, change gear.
this is what rivendell does with their SS
http://www.rivbike.com/products/show/quickbeam/50-150
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Life is too short not to ride the best bike you have, as much as you can
(looking for Torpado Super light frame/fork or for Raleigh International frame fork 58cm)