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@fredtc
I'm after some new cranks and have narrowed it down to two options. Either http://www.freshtripe.co.uk/Freshtripe/Shiny%20Bits_files/Sugino%20RD%20Track%20Crank-1.jpeg for £47.50 and buy a basic bottom bracket, or http://www.pearsoncycles.co.uk/product/3230/FSA_SINGLE_SPEED_CHAINSET_AND_BOTTOM_BRACKET_OFFER with the bottom bracket. I'm leaning towards the Sugino because I think they have a nice look to them but does anyone have any experience with either and could give me some advice?
also with the suginos, tokyo fixed gear recommends a 103mm bottom bracket but freshtripe says a 113mm would be best. Does anyone know which of these would be correct?
Lastly when buying bottom brackets what does the second number (either 68, 70 or 73 re3fer to and how can i tell what size is best for me (i dont know what my frame is as it was bought second hand)
Thanks in advance