Skip to main content

Hand Made Bicycle Hits 80 Miles per Hour

London-based framebuilder Tom Donhou has managed 80 mph on a hand-made bicycle on the open road — though indoor tests ultimately revealed his bike was capable of reaching 102 mph.
Donhou's bike is a custom-engineered contraption that he assembled with the help of a few friends, all for the purpose of showcasing the value of backyard engineering. And, of course, for making a bike go really fast. By comparison, the average person on a normal bike would probably have to push it to reach speeds around 25 mph.
In order to get his bike up to super speed, Donhou added an oversized chainring, adding significant power to the pedaler. It features 104 teeth, compared to the 20 to 50 you'd find on a normal bike. Donhou also sought more stability by positioning the chainring lower to the ground, and lowering the handlebars.
Donhou's reconstructed his Ford Zephyr to fit in front of the bike and serve as a pace car and wind shield. The car's frame blocks the wind while also providing Donhou with a form of speed control. In the video demonstration above, Donhou's friend sits at the wheel while Donhou pedals, hard. The result is an extremely fast bike ride.
"We'd hit 80 mph; essentially I had outrun my car and we had run out of road," Donhou says in the video posted on his website. "We went there to go as fast as we could, and I felt that we'd done that, and I was, you know, I was stoked," he says.
Although the world record for the fastest bike ride was set in 1995 by Fred Rompelberg, who reached 167 mph, Donhou's experiment was reportedly never really about breaking records, but about the excitement of assembling something with such power.
"It's about British engineering, it's about backyard engineering," Donhou explains.
What do you think of Donhou's bike? Let us know in the comments, below.
Homepage image: Donhou Bicycles

Popular posts from this blog

LG’s first flexible OLED phone due before the year is out

LG plans to launch a flexible OLED smartphone before the end of the year, the company’s VP of mobile has confirmed, though it’s unclear to what extent the work-in-progress handset will actually flex. The OLED panel in question is the handiwork of LG Display according to VP of LG mobile Yoon Bu-hyun, the WSJ  reports, with the proposed device set to launch sometime in Q4. LG Display’s work on flexible OLEDs has been underway for some time, though the company’s efforts have perhaps been overshadowed somewhat by rival Samsung’s YOUM development. Last year, according to a Korea Times report, LG Display was preparing for

Bing Apps for Windows 8 get major updates

Late least year, Microsoft rolled out a half dozen Bing Apps for Windows 8 users, each one focused on a specific category, such as travel and sports. The apps were designed to offer “immersive vertical experiences,” and now, about six months later, a big line of updates for them is being pushed out. Users can grab the updates now by heading into the Windows Store and selecting the updates notification.

Syrian Electronic Army claims credit for CBS Twitter accounts hack

Yesterday, several of CBS ’s Twitter accounts were hacked, including its main account, and its accounts for 60 Minutes, 48 Hours, and CBS Denver. The hackers got into the account and tweeted a series of things relating to President Obama and the United States being in cahoots with Al-Qaeda . The tweets also had links that led users to malware-infested sites. While CBS was able to regain access to its accounts, it was unable to figure out who was behind the attacks, until now. The Syrian Electronic Army , the same group that hacked 3 of the BBC’s Twitter accounts, claimed