Re: New Video showing R2 sweep pair for dry land rowing

On Sep 29, 3:35 am, kdav...@xxxxxxxxxx wrote:
On 28 Sep, 19:58, aramlemme...@xxxxxxx wrote:

For the first time, we have a video of the R2, a machine that
certainly is a milestone for us, online.

It comes up at the starting page of biorower.com.

Best wishes,

Aram

Very interesting.
One comment: there is much emphasis on "rowing together", etc. One of
the sections on technique in the book "Rowing Faster" edited by Volker
Nolte mentions that research into the top pairs shows the force curves
of bow and stroke are often quite different. In good pairs it is often
seen that bow maintains a consistent stroke length and power, whereas
stroke controls the run of the boat by varying load at the front of
the stroke. Obviously the R2 isn't aimed purely at pairs, but maybe
the force curve comparison is a bit of a red herring.

Kit

But the real question is: "Do the force profiles adapt to moving the
pair well, or are the people shuffled about until the right pair is
found?" Since this machine uses a single source of resistance (like a
boat, sort of) it may well be a good way to see if the 'desireable'
force profiles occur when rowing at the same "virtual speed".

IMO, the reason that the force curves vary in the "optimized" Pair has
to do with making the straightest course rather than the top speed
(That comes from being skilled and fit.). i.e. if both rowers had the
stroke profile (equal amplitude), bow would be pulled around and
require steering input, the opposite if both had the bow profile.

The bit I'm still quite curious about is that the mass of this machine
must not be anywhere near that of a shell, so how (if all the
RowPerfect material is to be believed) can it be a better simulator?
(BTW - I'm not convinced at all that the machine mass matters within a
very large range, as long as it moves freely. But the individual
claims of "being an accurate simulation" are mutually exclusive, based
on RP's reasoning, and I would like to see the arguments supporting
each.)

- Paul Smith

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Relevant Pages

  • Re: New Video showing R2 sweep pair for dry land rowing
    ... there is much emphasis on "rowing together", ... Nolte mentions that research into the top pairs shows the force curves ... of bow and stroke are often quite different. ... boat, sort of) it may well be a good way to see if the 'desireable' ...
    (rec.sport.rowing)
  • Re: New Video showing R2 sweep pair for dry land rowing
    ... there is much emphasis on "rowing together", ... Nolte mentions that research into the top pairs shows the force curves ... of bow and stroke are often quite different. ... the force curve comparison is a bit of a red herring. ...
    (rec.sport.rowing)
  • Re: New Video showing R2 sweep pair for dry land rowing
    ... there is much emphasis on "rowing together", ... of bow and stroke are often quite different. ... boat, sort of) it may well be a good way to see if the 'desireable' ... force profiles occur when rowing at the same "virtual speed". ...
    (rec.sport.rowing)
  • Re: New Video showing R2 sweep pair for dry land rowing
    ... there is much emphasis on "rowing together", ... Nolte mentions that research into the top pairs shows the force curves ... of bow and stroke are often quite different. ... The "work together section" points out moving elements of a pair in ...
    (rec.sport.rowing)
  • Re: for the science junkies: journal update
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    (rec.sport.rowing)