Concept2 Forum

My model is the differential equation P = C * ω³ + ω * J * dω/dt , linearized for small time steps into ∆ω = ∆t * (P/(ω * J) - C/J * ω²). I think I've fallen prey to the classic "the perfect is the enemy of the good". The model I've been using has two major defects that yours does not: A proper for...

https://i.imgur.com/RXjkmCM.png This result seems counter-intuitive, because stroke rates of 30 are not superhuman, but rowing at 460W for an extended time is not for ordinary athletes. May I ask what model you are using to produce these results? I've worked out my own model that shows a minimal wa...

To provide a concrete example, I'm 32 and my zones are UT2=126, UT1=145, AT=158, TR=164, AN=177+. This is just based on the formula. I haven't had my max heart rate measured or anything. For my last row of 8.5k (181.2 Watts) I was 8% UT2, 51% UT1, 39% AT. Max heart rate 163 For calisthenics I was 23...

Every third day I do a pretty simple upper body calisthenics workout of chin ups, push ups, inverted rows, and dumbbell overhead press. I'll usually do four sets of each with 80 seconds of rest between, and the same rest between the different exercises, with the current goal of hypertrophy. Every se...

This is an excellent tool! Thank you for your time and effort! I've just been modifying the "log.concept2.com/rankings/2022/rower/" URI and changing the "?age=30-39" component to whatever age range I wanted, but I was limited on conveniently searching across seasons. I was about to code something up...

Hence the drive time 'seen' by the flywheel/PM/ErgData is significantly shorter than the drive executed by the athlete. Also the drive length will be shorter ; the drive speed displayed by ErgData will be higher. Correspondingly the duration of the recovery is significantly overestimated by ErgData...

For low rate training at say 18, suggest you try 4:1 recovery - pull time ratio. 2:1 is for racing 2k. I got my rower last May and, after a few weeks toying around and reading these forums, decided the beginner Pete Plan was the way to go. I'm on week 6 and have a 7500 to do today. I intend to pull...

Very interesting! And thank you for your time helping to investigate. Much appreciated. I suppose the minimal watts question occurred to me because of how I conduct my sessions. I've been rowing with a metronome which I set to three times my desired rating. If I do steady state at 24 spm, I'll set i...

I was given a link to this topic from a question I asked here: https://www.c2forum.com/viewtopic.php?f=7&t=199540 This is phenomenal work Nomath! Thank you, very much. I suppose the natural extension to finish the topic would be to describe the aerodynamic properties of the flywheel housing and fan....

Interesting question! You can find a general explanation of the physics in an internet paper The Physics of Ergometers . You can find several answers to specific issues in my topic Fan Blade Physics and a Peek inside C2's Black Box . What C2 calls the drag factor is the same variable as the drag co...

Per the Concept2 website https://www.concept2.com/indoor-rowers/training/tips-and-general-info/damper-setting-101 : Between each stroke, the PM measures how much your flywheel is slowing down to determine how sleek or slow your “boat” is. This rate of deceleration is called the drag factor. On your ...

It depends on drag factor. At a DF of 0 you would produce 0 watts at any stroke rate (after you accelerated the flywheel), at infinite DF you would produce 0 watts at 0 stroke rate as the flywheel won't move at all. Everything inbetween this theoretical extremes should be able to calculate, but I c...

As I understand it, the wattage that appears on the performance monitor is average watts per stroke. Wattage is work divided by time, and work is force times distance. The force you apply over the distance of your stroke length gives you joules of work done, and if you divide those joules by the tim...

jcross88 wrote: ↑

July 14th, 2021, 1:19 pm

Your total stroke duration from catch to catch, in seconds, is 60/rating. Force is energy divided by distance, and energy is work (wattage) times duration.

Whoops, typo there. Wattage is power, not work, obviously.

I wasn't sure where to post this, but I have a somewhat abstract question to ask about the relationship between stroke rate and wattage on the erg. Two different stroke rates can have the same wattage if the higher rate has less force per stroke. Two different wattages can have the same stroke rate ...