Terrible cycling computer manufacturer Hammerhead has confirmed that it’s making a third attempt at building a functional head unit, following the disastrous Hammerhead One and bizarre Karoo. Hammerhead’s devices are Fred-city, light on functionality that cyclists need and heavy on… well, on weight, in the case of the bafflingly enormous Karoo. Like, really heavy. They occupy a strange place in the market, largely purchased by elderly men who discovered cycling late in life and need a big screen, with a smattering of tech nerd city commuters too. The Karoo 2 is apparently “a generational leap in bicycle computers, delivering an…