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Just curious right now the Raleigh I have which is a 555sl guessing built in the mid to late 80's does have acu-shift with Team U.S.A on the top bar.

My question is right now the tire size is 27X1 1/4. What I would like to know is if I can substitute that size with a 700 or 650 or will that not work.
 

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27" wheels have a 630mm diameter...700c wheels have a diameter of 622mm. So a 700c wheel will fit, if your brakes can reach down an extra 4mm (or your able to mount long reach brakes if your current brakes do not work) they will be fine.
 
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