F
DougC wrote:
> [email protected] wrote:
> >
> > No, it's a sad fact given the physics of this particular universe. If
> > you apply force downward on the pedals, you will naturally apply less
> > downward force on the seat.
> >
> So, tell me: if a casual 150-lb rider is tottering along at a casual
> pace, say 12-15 MPH, over level ground, how much downward force (in
> pounds) would they have to apply to the pedals? I'd bet not a whole lot;
> less than 20 lbs perhaps? 15 lbs maybe?
Not a whole lot. But you certainly can't pretend _all_ their weight is
on the seat!
>
> > And not all riders choose to support part of their weight on the
> > handlebars. "Sit up and beg" posture is normal for many cyclists. For
> > example, look at the girl in this photo: http://tinyurl.com/yqccja
> >
> Charmingly enough--this photo also blows a big hole in the "levitating
> bicyclist" silliness, at least among one casual rider. The rider is not
> leaning forward at all, so she cannot be supporting her weight partly
> with her arm(s).
The silliness is yours. AFAIK, casual utility riders are not told they
must "levitate." They just buy their bikes and pedal away, upright and
happy.
For example, I don't think the girl in the picture is in agony! She
_could_ be phoning the bike store to complain about the terrible design
of the bike they just sold her, and its effect on her tortured nether
parts, but I highly doubt it.
Again: Posture on the bike depends on the rider's objectives. For
longer, faster rides, cyclists learn that leaning forward decreases air
resistance and aids comfort. There are no significant disadvantages,
so it's a winning strategy. It's cheefully discovered by every
eight-year-old racing his buddy.
But utility potterers and neighborhood cruisers don't ride far enough
or fast enough to need those benefits. They don't stay on the bike
long enough to suffer any discomfort at all.
That's why they disappoint you. They don't clamor for recumbents. For
most people, recumbents are a solution to a non-problem.
- Frank Krygowski
> [email protected] wrote:
> >
> > No, it's a sad fact given the physics of this particular universe. If
> > you apply force downward on the pedals, you will naturally apply less
> > downward force on the seat.
> >
> So, tell me: if a casual 150-lb rider is tottering along at a casual
> pace, say 12-15 MPH, over level ground, how much downward force (in
> pounds) would they have to apply to the pedals? I'd bet not a whole lot;
> less than 20 lbs perhaps? 15 lbs maybe?
Not a whole lot. But you certainly can't pretend _all_ their weight is
on the seat!
>
> > And not all riders choose to support part of their weight on the
> > handlebars. "Sit up and beg" posture is normal for many cyclists. For
> > example, look at the girl in this photo: http://tinyurl.com/yqccja
> >
> Charmingly enough--this photo also blows a big hole in the "levitating
> bicyclist" silliness, at least among one casual rider. The rider is not
> leaning forward at all, so she cannot be supporting her weight partly
> with her arm(s).
The silliness is yours. AFAIK, casual utility riders are not told they
must "levitate." They just buy their bikes and pedal away, upright and
happy.
For example, I don't think the girl in the picture is in agony! She
_could_ be phoning the bike store to complain about the terrible design
of the bike they just sold her, and its effect on her tortured nether
parts, but I highly doubt it.
Again: Posture on the bike depends on the rider's objectives. For
longer, faster rides, cyclists learn that leaning forward decreases air
resistance and aids comfort. There are no significant disadvantages,
so it's a winning strategy. It's cheefully discovered by every
eight-year-old racing his buddy.
But utility potterers and neighborhood cruisers don't ride far enough
or fast enough to need those benefits. They don't stay on the bike
long enough to suffer any discomfort at all.
That's why they disappoint you. They don't clamor for recumbents. For
most people, recumbents are a solution to a non-problem.
- Frank Krygowski