Concept2 Forum

There are a few articles and scientific studies on the topic, e.g. https://www.row2k.com/features/5903/time-of-day-matters-for-endurance-and-strength--sports-science-you-can-use/ For another one the abstract can be read, but the full article comes at a price (or by courtesy of the authors) https://p...

jamesg wrote: ↑

September 24th, 2023, 2:12 am

...
Surely these scientists should know how to spell Oxide.

It’s a jolly practise to leave something in a manuscript for the nitpickers.

This explanation is nice, but I think it does not contribute much to the mentioned problem. .... The topic poster is asking about his 7:45 for 2K, not your 6:45 or the 17.6 sec for 100m in the Youtube video. The chain will retract perfectly at his pace and he will feel the bungee tension. Just let ...

..... Mechanical differences, usage, maintenance, machine placement and storage conditions all differ across machines which aren't part of a single fleet. So they'll deviate and feel different. It is one of life's mysteries why. You are summing up all kinds of variables and, with more time, probabl...

... I am not in a contractual obligation with anyone on this forum, so I am not required to do anything. Sure! ...And as said, my alternative explanation is that the machine has to wear in. Given the low forces compared to the materials used, could take a couple of million meters though... If I wer...

.... I can imagine that is also what happens in a brand new C2. And as most sprockets, bearings etc. are not measured in the dragfactor, you feel it, but it isn't measured. The home machine of the topic poster is not brand new. Read his first post! We need other factors to explain the difference, w...

This is not about mathematics, but physics. The drag factor and the bungee tension are two quantities that make a perceptual difference while rowing. To find out whether they explain time or power differences, you need a physical model and real numbers.

Because the statement "bungee makes no difference" should be based on facts, in this debate on bungee tensions.

nick rockliff wrote: ↑

August 12th, 2023, 6:17 am

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There is no difference between before and after. Bungee makes no difference.

What was the bungee tension before the revision and what is it after the revision ?

... So having a big lunch (increasing my body weight with 1 kg) will also cost me 5 seconds? Are you serious? Instead of ridiculing my calculation, I suggest that you review your statements. We are debating the possible effect of bungee tension on power. I suggest that we also stick to the case of ...

.... Some quick calculation: 216 / 223 = 96.86%. In other words, essentially a 3.1% difference between the two. That doesn't strike me as a huge difference. I agree that 5 sec on 2K doesn't look like a huge difference. But put yourself in the position of the topic poster. He finds that he can row 5...

... Any other ideas? Going by the numbers you presented in the opening post : Ergometer-A 7:45 for 2000 m means 223 W average Ergometer-B 7:50 for 2000 m means 216 W average Note that this is the power over the entire stroke, which means that the average power in the drive is much higher. E.g. for ...

.. it also typically takes some time for the data to travel from the HRM strap to the PM5 (depending on the protocol type) it might take up to a second to be received on the other end. I agree that it takes 'some' time for the data to transfer from the HRM strap to the PM5, if 'some' means up to a ...

iain wrote: ↑

June 27th, 2023, 5:11 am

I don't have access to the graph so relying on the above words...

I have always assumed that the graphs and pictures that I attach to my posts, using imgur.com , are visible to all forum users. Does this depend on the computer or what?

The lag factor approximates come from a combination of... ... This help? Thanks for the links. I didn't have time to read them well. I scrolled them down to find specifics on 'lag' or 'delay', but couldn't find any. Did I miss one or two? Here is why I doubt that there is a device-related lag : 1. ...