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Questions tagged [theoretical]

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9
votes
4answers
556 views

How to decelerate during long downhill rides and avoid brake glazing

I mostly ride touristic style, and its not uncommon descents of few hundred meters or even 1000 meters (vertically, usually average gradient is around 5-10%). What's the best technique to brake to ...
1
vote
3answers
121 views

cogs for front wheel

See this wheel. Can I put two freewheel cogs on it, instead of one freewheel and one fixed? (driving clock and anti clock, so both driving forward) Then get this wheel onto front steel fork, by ...
5
votes
1answer
132 views

Carbon foot print from the manufacture of bikes?

It was said on National Public Radio in the US that in most cases the carbon foot print from the exhaust off your old car would be less in a life time then carbon footprint to manufacture new cleaner ...
1
vote
6answers
915 views

Would variable crank arm length be beneficial to a rider?

I was thinking it would be cool to have a bike where the crank arms can be adjusted automatically "on the fly", depending on load. If that is not so safe then maybe a manual adjustment that the ...
-6
votes
1answer
349 views

Why don't we see this special progressive 3x5 gear setup being offered? [duplicate]

This question is not the same as the 36 gear post which used a combination of internal hub gears, cogs, and chainrings. This one is much simpler and much lower cost. Part of the problem of something ...