Re: HydroDynamic Lifting

Neil Wallace <[EMAIL PROTECTED]> writes
> Carl Douglas wrote:
> > Neil Wallace <[EMAIL PROTECTED]> writes
> > > The topic turned to DIY adjustment of blades. Ewoud chimed in that
> > > he has had some sucess decreasing the spoon size in this way with
> > > some of his athletes.
> > >
> > > CD took a different line, he said that small people should just
> > > accept rowing short, thus accepting loss of lift, but instead go for
> > > bigger blades still to minimise their "slippy stroke".
> >
> > CD did what???!!  Did he heck!
>
> Did I interpret you incorrectly Carl?
> Here's the direct quote
> ............................................................................
> ............................
> Maybe, even, the
> weaker guy with the shorter (in angular terms) stroke who shoves all his
> work in at mid-stroke needs bigger blades than the more flexible but
> stronger rower who invests a rather higher percentage near the catch?
> ............................................................................
> ..............................
>
> taken from google groups.
> http://snurl.com/38fp
And taken selectively, I'd say.  As a fuller quote shows:
  "So blade size should be a compromise of many factors.  Maybe,
   even, the weaker guy with the shorter (in angular terms) stroke
   who shoves all his work in at mid-stroke needs bigger blades than
   the more flexible but stronger rower who invests a rather higher
   percentage near the catch?
  "I would note, in passing, that it is perfectly normal for the
   lightweight & the super-heavyweight to use almost identical oars
   & rigs, despite their very different blade loadings.  But where's the
   science in that!?"

Since when has Weaker meant, or automatically implied, Smaller?

I was exploring a side issue to illustrate the main points under 
discussion, & I meant exactly what I said.  That weaker person with a 
shorter stroke might, e.g., be an unfit guy of gut-restricted reach. 
Rowing is not only for athletic demigods & mad dentists, you know. ;^)

As my second paragraph had indicated, I've always advocated 
physique-specific rigging.  Thus an athletic but small lightweight 
should row through a similar angular range as a taller person of similar 
athleticism, but at a higher rating in order to compensate for their 
shorter overall stroke.  The shorter runner needs a higher cadence.

Cheers -
Carl
--
Carl Douglas Racing Shells        -
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