Anyone who likes bicycles has at some point probably fantasized about it - getting their own one-of-a-kind custom-made bike. There are oodles of independent frame-builders out there who will gladly accommodate such fantasies, but their services generally don’t come cheap. Building a high-end bicycle from scratch definitely requires a lot of skill, and even designing one isn’t something that just anyone can do… or is it? BikeCAD, a free online applet, guides users through designing their own road, mountain, tandem or recumbent bike. They can then take their finished design to a builder, or even attempt to build the thing themselves.
The purpose of BikeCADCanadian mechanical engineer Brent Curry developed the program. “BikeCAD was originally intended to allow custom frame builders to quickly design a bike and easily obtain the lengths and angles at which to cut the tubes,” he told us. “Over the years, BikeCAD has been enhanced to account for component designs, spoke length calculations, and paint schemes… With all of BikeCAD’s added features, the program now appeals not only to frame builders, but also bike shops, bicycle fitting specialists and serious cyclists.”
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What you do with itThe basic, free version of BikeCAD is available as an applet through Curry’s website – this means that instead of downloading it, you just use it online, but save your project to your own hard drive. You start by selecting the type of bike you want to design, which can include road, kids, recumbent, tandem, plus hardtail and full-suspension MTB (there’s also a version for building wheels). Then, through the program’s customizable Fit advisor, you enter your personal body dimensions, and the optimum frame geometry will be automatically determined for you. Tinkerers and/or know-it-alls can then proceed to tweak some of these numbers, although they do so at their own peril – that said, professional frame-builders receiving these designs would likely question any really inappropriate geometry.
BikeCAD for the big boysAnd on the subject of professionals, there are apparently at least 200 of them, all around the world, using Curry’s software. For users like these, he developed BikeCAD Pro, the paid, downloadable version of BikeCAD. It sports a pannier-load of extra features, including the ability to reverse-engineer bikes from digital photos, and an animated human figure that rides your designs, to show how the client would interact with the bike. There’s also a third version of the program, called BikeCAD for the Web. Bicycle builders can install it on their websites, so prospective clients can create their own bikes, but only within parameters set by the builder – the distinctive graphics, components and other features unique to their brand will always be present, while anything that strays from their design philosophy won’t be possible.