[python] Re: Arm-assist pedalling
- From: Vi Vuong <vi_vuong@xxxxxxxxx>
- To: "python@xxxxxxxxxxxxx" <python@xxxxxxxxxxxxx>
- Date: Fri, 10 Jan 2014 17:55:02 -0800 (PST)
Hi Jürgen
If not obvious, I am simply pushing hands against thighs as you had mentioned
>> Wenn es mal schneller gehen soll, dann drücke ich mit
>> den Händen meine Knie, was so etwa 4 km/h bringt.
//www.freelists.org/post/python/probefahrt-entspannt,1
I also tried holding on fixed handlebar or seat effectively assisting with arms
and torso, but the experience is not as interesting / pleasant.
Vi
>________________________________
> From: Jürgen Mages <jmages@xxxxxx>
>To: python@xxxxxxxxxxxxx
>Sent: Friday, January 10, 2014 12:24 PM
>Subject: [python] Re: Arm-assist pedalling
>
>
>Hi Vi,
>
>I once tried two forms of arm input: One was a pushing force via two ski
>poles that were attached to the pedals. The other was a pulling force
>via two cords attached to the pedals.
>
>Both brought significant more speed but made me quite exhausted after
>several kilometers. The pole method was more fun because of the direct
>power transmission. If one manages to attach brake and gear levers to
>the pole handle it might work out pretty well.
>
>Cheers and keep up the good thoughts,
>Jürgen.
>
>On 10.01.2014 08:11, Vi Vuong wrote:
>> Hi All,
>>
>> Putting the arms to work seems like a logical thing to do on a long
>> quiet ride, rather than just resting. After some testing, it seems that
>> 10-15% arm-power assist at moderate range 100-150 watts is quite
>> practical. Overall gain is not much, just ~1mph, but speed is more
>> steady over slight changes in elevation or wind, similar to pedelec I
>> guess. I am more intrigued by the synergy between arms and legs, quite
>> different from rowing where the roles are switched. Steering seems more
>> confident somehow, as if the hands have some direct influence on the
>> pedals, new nueron connections?
>>
>> Yes, at first the arms do get tired but some moderate excercise should
>> be good in the long run. Can't imagine the exhaustion from pushing the
>> level of power mentioned in the article below...
>>
>> Cheers,
>>
>> Vi
>>
>> http://journals.humankinetics.com/AcuCustom/Sitename/Documents/DocumentItem/10417.pdf
>> Arm and Leg Exercise in Cycling
>> In a series of studies examining arm and leg exercise in cycling, we
>> found that
>> for a 1-min period, 6 subjects increased their power output by 17% using arm
>> and leg exercise compared to leg power alone (522 watts vs. 470 watts
>> average
>> for the 6 subjects). The most efficient mode of arm exercise was
>> bilateral op-
>> posed (arms moving opposite to their respective legs).
>>
>>
>> [python] Re: probefahrt entspannt
>>
>> * /From/: "brechtix" <brecht.vandeputte@xxxxxxxxxxxxxxxxx>
>> * /To/: <python@xxxxxxxxxxxxx>
>> * /Date/: Mon, 19 Apr 2004 19:34:21 +0200
>>
>>> Wenn es mal schneller gehen soll, dann drücke ich mit
>>> den Händen meine Knie, was so etwa 4 km/h bringt.
>>>
>> Then it would be the world's most efficient arm-power assist. However
>> extatic their owners and regardless of the great workout, I gather the
>> Thys Rowbikes are no faster than merely leg-driven hpv's. Probably our
>> heart & lung system provides a limit to the total wattage of arms and
>> legs combined.
>>
>> I rode an armpowered trike once and it went very well for about a km,
>> then I found out my arm muscles were not trained for endurance. First
>> time I had spaghetti arms instead of - legs.
>>
>> It's another fascinating aspect of the Python setup that without any
>> mechanical complexity or weight penalty one could deliver arm assist for
>> a short anaerobic outburst of acceleration or a short climb. In city
>> traffic I use the hamstrings for that trick.
>>
>
>============================================================
>
>This is the Python Mailinglist
>
>//www.freelists.org/list/python
>
>Listmaster: Jurgen Mages jmages@xxxxxx
>
>To unsubscribe send an empty mail to
>python-request@xxxxxxxxxxxxx
>with 'unsubscribe' in the subject field.
>
>============================================================
>
>
>
>
Other related posts:
