Though it looks like the popular BOB Yak this trailer costs a lot less and folds flat for shipping. It’s not quite as suited to expedition use, but for shopping or touring it’s a bargain., Blink and you’d be excused for thinking you’re looking at BOB’s popular and long serving Yak trailer. After all, Revolution’s Cargo shares the same single wheel setup and similar proportions (62×39x20cm). Like all axle-mounted single wheelers, there are pros and cons compared to two-wheel trailers – they exert stress on the bike’s rear triangle, they’re longer and they require more of a balancing act to park or load. On the plus side, they cut a narrower profile through traffic and are as happy off road as they are jumping in and out of city potholes. There are a few key differences between the Cargo and the Yak. For a start, the Cargo can be ‘flat-packed. The yoke, which accepts 26in wheels with mudguards and 700c without, is easily removed and it collapses down, while hinges on the struts allow the main frame to fold, fitting into its own bag. Also, the mounting mechanism is simpler and less prone to failures, using two spring loaded hooks to clip it into place. On the downside, though, the high viz bag uses waterproof material but it’s not seam taped, there’s no bungee included and the mudguard runs through the quick release, which isn’t ideal. Extra pivots and bushings mean marginally less rigidity and more wear and tear. This said, having used it for the last few months, including …