Re: Recumbent

bornfree wrote:
On 10 Dec, 08:43, Peter Clinch <p.j.cli...@xxxxxxxxxxxx> wrote:
Artemisia wrote:
What we didn't get round to discussing was whether the fact that you can
stand on the pedals on an upright bike, and thus convert gravity into
forward motion, is not an advantage over your position on a recumbent,
where the available force is only what you can push from your abdomen,
unaided by God or Newton.
On a 'bent you can push against the seat, which is actually a much more
effective thing to push against than gravity, so not being able to honk
isn't the disadvantage most people paint it as. As well as the seat
being a more static point, you don't waste all that energy moving your
body up and down.


On a common bike you are not pushing against gravity, that would mean
the pedals are above your head. Think about it.

I think it's a problem with English rather than physics. The force you
are resisting and the thing you push against in order to resist it take
a common term in English.
i.e., you push against the pedals in order to push against gravity and
rise up.

Pete.
--
Peter Clinch Medical Physics IT Officer
Tel 44 1382 660111 ext. 33637 Univ. of Dundee, Ninewells Hospital
Fax 44 1382 640177 Dundee DD1 9SY Scotland UK
net p.j.clinch@xxxxxxxxxxxx http://www.dundee.ac.uk/~pjclinch/
.

Relevant Pages

  • Re: Recumbent
    ... On a 'bent you can push against the seat, which is actually a much more ... effective thing to push against than gravity, so not being able to honk ... the pedals are above your head. ... In a recumbent some of your leg muscles have ...
    (uk.rec.cycling)
  • Re: Recumbent
    ... stand on the pedals on an upright bike, ... On a 'bent you can push against the seat, which is actually a much more ... effective thing to push against than gravity, so not being able to honk ... the pedals are above your head. ...
    (uk.rec.cycling)
  • Re: Recumbent
    ... you can stand on the pedals on an upright bike, ... gravity into forward motion, is not an advantage over your position ...
    (uk.rec.cycling)
  • different muscles for standing pedaling
    ... There's some opportunities to use unexpected muscles to help push the pedals ... push upper leg sideways from hip ...
    (rec.bicycles.tech)
  • Re: Nose Wheel Steering for Retracts
    ... retractable gear. ... A push on the right pedal would pull back the push rod and roller ... If the nose gear strut was directly below the pedals, ... Then the wheel could rotate and retract, and the hose pipes from brake flexibles, would just flex. ...
    (rec.aviation.homebuilt)
Loading