"True Negative Drag" in bicycle wheel brochure - possible?
"True Negative Drag" in bicycle wheel brochure - possible?
(OP)
Interesting in a aerodynamic expert opinion of the term.
A $3,000 bicycle wheel brochure advertises "true negative drag". "using the most difficult wind tunnel testing protocol".
Possibly these wheels don't require that I install pedals as the bike will accelerate on its own.
But seriously, possibly this is a 'term of the trade" that I am not familiar with. Or just advertising fodder.
A $3,000 bicycle wheel brochure advertises "true negative drag". "using the most difficult wind tunnel testing protocol".
Possibly these wheels don't require that I install pedals as the bike will accelerate on its own.
But seriously, possibly this is a 'term of the trade" that I am not familiar with. Or just advertising fodder.





RE: "True Negative Drag" in bicycle wheel brochure - possible?
Yup, your right it all sales talk.
RE: "True Negative Drag" in bicycle wheel brochure - possible?
TTFN
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RE: "True Negative Drag" in bicycle wheel brochure - possible?
RE: "True Negative Drag" in bicycle wheel brochure - possible?
RE: "True Negative Drag" in bicycle wheel brochure - possible?
...well, no. It can produce a lift vector if oriented properly to the the wind, and that lift vector, combined with a keel or other suitable resistance, can be directed to provide a useful thrust, usually in a direction perpendicular to the wind velocity.
Could one of those spokeless wheels act like a sail, and produce net thrust from a strong crosswind? Well, maybe. But there's no good (efficient, effective) way to counterbalance the drag force acting sideways on the bike without a third wheel, or a way to lean off one pedal and still control steering, brakes.
RE: "True Negative Drag" in bicycle wheel brochure - possible?
I agree in a cross wind there may be some thrust available.
Cheers
Greg Locock
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RE: "True Negative Drag" in bicycle wheel brochure - possible?
RE: "True Negative Drag" in bicycle wheel brochure - possible?
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