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Since we live in the advent of the smartphone, you can likely look at the brand and model of a bike and quickly google it. Two sites to look at are Bicycle Blue Book and Bikepedia. This probably helps you avoid having to look at the individual component specs since most of the time if a part is replaced, it is replaced with something at least as good as the ...


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Just like with any other area of expertise, there is no substitute for years of experience. If you need a simple heuristic though, brand recognition in combination with a general knowledge of groupsets and their quality can go a long way. At the very least, know how to tell forged components from stamped. Learn Shimano's and Suntour's groupset lineups. ...


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From what you have said be prepared to end up with a dud. It's not easy for a novice to tell the difference in quality, and impossible to tell the condition of the drive train without close inspection, even for an expert. Obviously look at the condition. Tires with mold tags still on them are a likely sign of a low mileage bike. But a quality bike with ...


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A aluminium frame is lighter then a steel frame. Old bikes and retro bikes often still have steel though. You can recognize an aluminium frame by its thicker tubes and welds. You will most probably not find carbon and titanium frames at such an auction. Determine what kind of gears you want. In case of an internal gear hub: Look which models and brands of ...


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The bicycle blue book does not include a Gudereit, which is a German brand. It seems to miss information about a lot of European brands and models yet. Sometimes a sticker on the frame indicates the build quality. There is a sticker just below the saddle and on diagonal tube almost entirely at the front if I see it correctly. If one of those says something ...


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A reasonable estimate can be found using a site like Bicycle Blue Book. This site is a database of used bike sale transactions going back for almost a decade, and has a number of pretty obscure manufacturers listed. You can even add upgrades you have made from the stock and get an estimate of how that changes the value, though it doesn't account for things ...



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