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@Jimmy_Fingers
Converting this bike at the moment
Sorry for the gay pic but had just got new camera and was playing with settings. Got a rear wheel, bidding on a surly tensioner on ebay, unsure about chain or front ring. Tempted by Middleburn Uno but is expensive and only 34T. Got other cranks lying about and even a 2pc Charge SS set I could strip off another bike but I what similar inches to my fixed which is about 70". I'm guessing my sprocket is 14T. Any advice? Do I need a new chain?