Sorry to hear that.Shawn Baker wrote: Unfortunately a bit of a family health crisis means I have to hop back in car and drive right back to California today (another 12 hours with the dog Dave
I hope that everything turns out okay.
David
Sorry to hear that.Shawn Baker wrote: Unfortunately a bit of a family health crisis means I have to hop back in car and drive right back to California today (another 12 hours with the dog Dave
This is a concept a lot seem to have difficult grasping. Using a high drag factor when your physically able to apply a very large force is beneficial to measured performance. "Normal" people are not able to apply force that requires a high drag factor so people encourage you to reduce drag factor to get you back in their box. The increased drag factor severely caps peak wheel speed and drags wheel speed back down very quickly in between strokes, allowing you to keep maximum force on the handle. As you rate up the high drag factor maintains these peaks to a greater extent then a lower drag factor would therefore rating up has less effect on efficiency, to a point of course.Shawn Baker wrote:
Henry-I agree about the drop off in efficiency but I'm not sure for me if it will be at 26, when I did my 500 work I stayed pretty efficient through up to 30 spm
Nomatter what drag, using the same stroke, and taking more strokes per time unit costs more energy, in a liniar way.Tim K. wrote:This is a concept a lot seem to have difficult grasping. Using a high drag factor when your physically able to apply a very large force is beneficial to measured performance. "Normal" people are not able to apply force that requires a high drag factor so people encourage you to reduce drag factor to get you back in their box. The increased drag factor severely caps peak wheel speed and drags wheel speed back down very quickly in between strokes, allowing you to keep maximum force on the handle. As you rate up the high drag factor maintains these peaks to a greater extent then a lower drag factor would therefore rating up has less effect on efficiency, to a point of course.Shawn Baker wrote:
Henry-I agree about the drop off in efficiency but I'm not sure for me if it will be at 26, when I did my 500 work I stayed pretty efficient through up to 30 spm
1. Correct. Same force, more strokes = more work. It is basically linear if you ignore accelerating your body during the stroke.hjs wrote:
1.Nomatter what drag, using the same stroke, and taking more strokes per time unit costs more energy, in a liniar way.
2.Using the same rate, a higher drag does not take more force, but less, the slower moving flywheel gives you more time.
3.The trouble when rating at higher speeds is the time you have to catch the flywheel, that gets less and less.
4.Looking at Shawns 500 and 1 min work it showed pretty well. He needed less rating, but the higher drag gave plenty enough time overall.
5.On longer, slower work, high drag is not needed, the fan is slow enough to have plenty of time to stroke. Strength is seldom the limiting factor, aerobic fitness is. On shorter work raw power is the limiting factor, aerobic fitness plays much less a role.
You know I often don,t bother to be friendly.Tim K. wrote:Henry! Am I off your enemy list now? Lets try to keep this on friendly terms, ok?
1. Correct. Same force, more strokes = more work. It is basically linear if you ignore accelerating your body during the stroke.hjs wrote:
1.Nomatter what drag, using the same stroke, and taking more strokes per time unit costs more energy, in a liniar way.
2.Using the same rate, a higher drag does not take more force, but less, the slower moving flywheel gives you more time.
3.The trouble when rating at higher speeds is the time you have to catch the flywheel, that gets less and less.
4.Looking at Shawns 500 and 1 min work it showed pretty well. He needed less rating, but the higher drag gave plenty enough time overall.
5.On longer, slower work, high drag is not needed, the fan is slow enough to have plenty of time to stroke. Strength is seldom the limiting factor, aerobic fitness is. On shorter work raw power is the limiting factor, aerobic fitness plays much less a role.
2. Correct, however from a sprinting perspective (the subject of this thread), the wrong perspective. The high drag allows a greater force to be applied for a longer period of time than would be possible with a low drag.
3. Correct again, kind of. This is one of those statements that requires a tremendous number of qualifications. It is correct in a very narrow set of circumstances. If you do a piece at 20SPM with each stroke a 100% effort, you can easily increase stroke rate to 30SPM, by doing nothing other than shortening the length of time given to the recovery, and the drive remains essentially the same (100%). With a high drag the wheel at the catch will be spinning only marginally faster than it was at 20spm due to the square relationship of velocity to work (its deceleration is very fast at high speed.). With a low drag the wheel will be dramatically higher at the catch, very seriously affecting the performance curve and efficency of the stroke. This is part of the concept I was saying many have difficulty grasping.
4. ?
5. The drag required is dependent on what you are trying to accomplish. If you want to be stuffed back into the "erging is training for rowing" box then sure. The erg is just a machine. Use it as such to train in a variety of ways to prevent yourself from becoming a "one trick pony"
Agree about the out, lets not clog up the thread.Tim K. wrote:3. The same holds regardless of who has the handle and what % of effort is being applied. It was an example and its point was to demonstrate that even though what you said was correct, to a point, there are a huge number of situations where it is not correct.
Been here done it all before. Cant be bothered with with rest. Out.