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Erg time vs. on-water time

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is without SPAM: rowSPAM@knovaspam.com J-Lo

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Aug 31, 2004, 11:50:55 AM8/31/04
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Does anyone have any data--even anecdotal--that correlates erg times with
on-water (in a single) times for an individual? Just wondering if there is
any rule-of-thumb that might be applied. Of course, realizing that on-water
performance has an almost unlimited number of variables (technique, wind,
current, etc., etc.) that does not affect erg performance. On that note,
some of the fastest erg rowers I've seen in the gym have horrible technique
in terms of what would work on-water. So, my question is really about any
relationship between an on-water session in pristine conditions (no wind, no
current) by a single sculler who is a competent rower and his erg time over
the same distance.

Best regards to all!

Anu Dudhia

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Aug 31, 2004, 11:58:59 AM8/31/04
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Relationship between Erg Score and Boat Speed
http://www.atm.ox.ac.uk/rowing/physics/weight.html#section8

PaulS

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Aug 31, 2004, 7:03:13 PM8/31/04
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"J-Lo" <email is without SPAM: row...@knovaSPAM.com> wrote in message news:<H81Zc.40334$5s3....@fe40.usenetserver.com>...

C2 has a calculator they say is useful relative to an 8+ adjusted for
weight. (and 8 identical rowers I suppose)

You could then take various adjustments of +16 to +18 seconds added to
that 500M pace for a 1x.

- Paul Smith

PaulW

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Sep 1, 2004, 10:32:35 AM9/1/04
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World record for 1X over 2K is 6.36 (Hacker, 2002)
World record for C2 over 2K is 5.37 (Siejkowski, 2002)

So, if your sculling 2K time is more than 118% of your ergo 2K score,
concentrate on your technique; if it's less, get fitter

Perhaps

(E&OE, I really should be working, not lurking - no time to check the
above properly)

PaulW

hba...@pipeline.com

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Sep 2, 2004, 11:15:54 AM9/2/04
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These numbers are completely incomparable, because the C2 number
doesn't take weight into account.

Neil Wallace

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Sep 2, 2004, 8:15:53 PM9/2/04
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C2 use
power = 2.8 * Velocity ^3
which is probably about right for a 4- with 95kg guys in it.


for a single, try this instead. Do a timed piece on the C2 (i.e how far can
I go in 5minutes), and note the watts. Use this formula to derive a single
scull speed.

power = 0.4358 * (your mass in Kg + 17.5)^0.5 * Velocity ^3

do let us know how you get on.

PaulS

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Sep 3, 2004, 1:47:53 PM9/3/04
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"Neil Wallace" <rowing.golfer@*NOPSAM*virgin.net> wrote in message news:<ZIOZc.194$sB...@newsfe5-win.ntli.net>...

The 0.4358 appears to be a boat specific constant, do you have those
for other boat classes as well?

- Paul Smith

Neil Wallace

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Sep 6, 2004, 5:13:26 AM9/6/04
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PaulS wrote:
> "Neil Wallace" <rowing.golfer@*NOPSAM*virgin.net> wrote in message

>> power = 0.4358 * (your mass in Kg + 17.5)^0.5 * Velocity ^3


>>
>> do let us know how you get on.
>
> The 0.4358 appears to be a boat specific constant, do you have those
> for other boat classes as well?
>
> - Paul Smith


Hi Paul,

You are right.
I derived the 0.4358 from a workout on the rowperfect. I don't have any
others (in fact I wonder about the merits of them, given the 1x mode is what
99% must use. Furthermore the model gets messy for coxed boats.)

Back of an envelope stuff link below (+ it contains a link to the original
source article)

Incidentally - could the different cox allowances for male and female crews
solve the "why do we have to input our sex?" FAQ?

http://www.invernessrowingclub.co.uk/neilswaffle/ergboatspeed.html


Bill Atkinson

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Sep 7, 2004, 9:26:43 AM9/7/04
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"J-Lo" <email is without SPAM: row...@knovaSPAM.com> wrote in message news:<H81Zc.40334$5s3....@fe40.usenetserver.com>...

J-Lo:

You might get some feel for the difference between boats and ergs at
<http://www.atkinsopht.com/row/erg/ergorowg.htm>
Best regards,
Bill

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