[python] Svar: Re: another newcomer
- From: "Thomas Paul Jahn" <tpj@xxxxxxxxxx>
- To: <python@xxxxxxxxxxxxx>
- Date: Fri, 26 Jan 2007 15:44:18 +0100
Oh yes, it must be independent on the test driver. I found that page about SRM,
but did not understand it. Of course your are right.
But I like your second point. But that can only be measured with the SM method.
;-)
cheers
Thomas
>>> <dirk.bonne@xxxxxxx> 26-01-2007 15:24 >>>
Thomas P Jahn wrote:
>>
>> > dirk.bonne@xxxxxxx wrote:
>> > FYI: there has been documented measurements related to this. Check
>> out
>> > this pdf:
>>>
>>> http://www.ligfiets.net/redactie/meetligfietsengels.pdf
>>>
>
> Hey,
>
> Apparently SRM measures more precisely than any other method. How and
> why I don't know.
> But what I do not understand about this investigation: Everybody will
> have to develop muscles to fit to the particular bike used for training.
> Sorry for my ignorance. But I don't know Bram Moens, the test driver.
> He may be well trained at any seat inclination and BB height. But if
> not, another test driver will certainly produce very different data.
Not at all. The measurements do not include comfort or ability of Bram.
The SRM measures the power input on the cranks.
http://www.srm.de/usa/prod_srmts_subhome.html
So the human element is cut away from the experiment. The experiments do
not say if Bram enjoyed pedalling at 200W ;-).
> So when there is no big difference between 15 and 25 cm BB height,
> then this may relate to Bram Moens personal shape.
It is more comfortable to have the BB low. If you lower the BB below
15cms you come into the wind flowing under your seat.
Dirk
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