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Fast fixie: Bicycle with giant chainring aims for 100 mph

Bicycle with giant chainring aims

Donhou 100mph bikeZoom, zoom.

Most of us don’t put much thought into the components that make a bicycle move. Things like chains and chainrings are pretty much out of sight and out of mind as we peddle along. With Donhou Bicycles’ 100-mph bike, you can’t ignore the chainring. It’s so big, you could serve a large pizza on it.

The Donhou bike has a purpose in mind. It’s made to go fast. The strange-looking handlebars keep the rider hunched forward in an aerodynamic position. That humungous serving plate-size chainring then goes to work to propel you forward at speeds your Huffy would never even dare to dream of.

That monster of a chainring sports 105 teeth and is 17 inches in diameter. That means every go-round of the pedal sends the bike forward way farther than your standard road or mountain bike.

According to NPR, the bike has already reached speeds of 60 mph on the open road, but creator Tom Donhou would like to get it up to 100 mph. Getting there under pure leg power alone is a little out of reach, which is why many speedster bicyclists use a lead vehicle that provides a good draft to follow in. That’s how Donhou plans to get up to speed with this unusual bike.

The Donhou 100-mph bike won’t be breaking any speed records, but it does manage to look much more like a regular bike than most of the specially designed creations that have set records. That chainring is certainly an attention-getter.

The bike was unveiled at the Bespoked Bristol 2013 show, but so far it looks like it will remain an specialty item and not go into wider production.

Donhou 100mph bike

This bad boy isn’t for dawdling around town on.





  1. 1. What exactly are mtb brands?

    2. How can you buy a mtb?

    3. What’s their cost range?

    I am likely to be by using this bike to urban mush with my husky.

  2. i had been using my buddies mtb, he first got it from REI or something like that like this. however i know its an costly bike. i needed to begin biking and it was wondering when the walmart or target brand bikes is going to do the task? there’s a trail by the house that everybody within the condition would go to to visit biking, so i’m wondering basically can use one of these

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