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re:You weigh less or bike weigh less?
In category Racing
Written by RazorFetish000

Here's a scenario regarding identical twins, Jim and John:

Jim weighs 160 pounds and rides a 20 pound bike.
John weighs 155 pounds and rides a 25 pound bike.

With everything else being equal who should ride faster?

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re:"The Stability of the Bicycle"
In category Tech issues
Written by loanercrow

There was an article in "Physics Today" for 1970, 23(4), pp. 34-40 by David
E. Jones entitled, "The Stability of the Bicycle". I am trying to get a copy. Is it, perhaps, somewhere on the internet? Advice appreciated.

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re:"Continuously variable" electric transmission
In category Tech issues
Written by ducky

My searches have not turned up anyone selling a bicycle with a continuously variable electric transmission. I don't mean an electric scooter: I mean one in which the crank turns a generator/alternator, whose output through an electronic controller then drives an electric motor on the wheel rim(s) or in the hub(s). There would be no chain, derailleur or gears, except perhaps for some fixed-ratio

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re:Roadies, do you use rear-view mirrors
In category Tech issues
Written by Guildenstern

I ride 50 - 100 miles a week on the roads around Baltimore and am getting weary of not knowing what's pulling up behind me.

Question: What is the thinking regarding rear-view mirrors, either helmet or bar-end mounted? Is this something for the pocket protector set only, or is it something most serious road riders do?

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re:Flywheel for Bicycles
In category Tech issues
Written by NathanCollins

Here in the Sonoran Desert anti-thorn measures typically result in a bicycle wheel that, when rotating at 8 mph, has an angular momentum that would rival
Jupiter's.

This wouldn't be such a problem if the brakes could somehow spin a flywheel to save the otherwise wasted energy for a nice quick acceleration after the light changes or after the mountain switchback.

Is anyone doing anything with thi

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re:Easiest chain to break
In category Tech issues
Written by hypermush

The difficult to break chain on my Peugot mountain bike will eventually have to be removed for cleaning. It was a bear. Needle nose pliers helped.

Does anybody make a pliers type tool that breaks a chain in two seconds flat?
Not the kind that shoots the pin out, at a cost of around a hundred dollars, but something that is made to break the same chain at the same place with a special link many tim

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