You have to see this!
11-18-14, 07:30 AM
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11-18-14, 07:39 AM
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That must have made for a strange cycling cadence.
11-18-14, 07:46 AM
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Why would you do that?
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11-18-14, 07:51 AM
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The evolution of Biopace.
11-18-14, 07:52 AM
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So, Im trying to play this out in my head...would that make you feel like the bike was pulsing? You know, kind of like riding in a car with someone that can't keep the gas pedal steady.
11-18-14, 08:12 AM
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Well, yeah, you could call it a pulsing effect. But worse, three pulses per revolution; one pulse with one leg, two with the other. I suppose something like this might be good if one leg was much stronger than the other.
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11-18-14, 10:10 AM
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It's a Reuleaux triangle. Basically, due to the arc on the sides, it creates a curve of constant width, so the chainline will not change despite the orientation of the triangle. There were some nerd engineers in the 19th century working on all kinds of machines using these kinds of shapes. Here's the wiki.
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11-18-14, 11:14 AM
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Except for the fact that in order for a Reuleaux to roll, the center of rotation is not fixed like in your example gif. On the OP's video the center is fixed, causing oscillation.
Also the chainring resembles more of a Wankel rotor than a Reuleaux.
Also the chainring resembles more of a Wankel rotor than a Reuleaux.
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