The mechanism of the pull has been a controversial topic for years. Do we use our hand/forearm as a wing or a paddle, or some combination of both? You can find out by linking on the videos below. I have divided the underwater pull into four phases; lift, front quadrant propulsion, back quadrant propulsion and release. You will see how each plays a different role. Hope you enjoy....the remaining two videos to complete the pull will be shown in the next few weeks.
www.theraceclub.net/.../www.theraceclub.net/.../www.theraceclub.net/.../
Yours in swimming,
Gary Sr
The Race Club
Thank you coach Hall. I enjoy your videos, have been watching them for a while now.
Former Member
Mr. Hall,
I think it'd be safer to state that Ernest Maglischo felt forced to point his researches to elsewhere (I'm referring to Bernouli's principle) after having studied (in depth) the works of:
- Ferrell (1991)
- Bixler (1999)
- Hold and Hold (1989)
- Toussaint, Van den Berg and Beek (2000)
to which he then opposed the works of:
- Colwin... on Vortoex(1992 )
- well, mostly Colwin but I may (and certainly do) forget a few...
He's not against the idea that humans be using a mixed of lift and drag forces, as stated on page 22 of his last edition. Though a big lover of Bernouli's theory (you should have read the passion this man had about it back in 1980, the tone of your clips reminds me this a bit), he has to also consider serious works of other researchers, just like he's done over the period of 33 years he took to write the 2200 pages of science driven literature forming his now famous trilogy.
If we tried to dum down his take about lift forces / Bernouli's principle, I guess we could state that getting an airplane to fly as a result of exploiting Bernouli's therory requires a lot of precision in the way wings must be shaped. Maglischo, I believe, simply found out (through the works of these aforementioned researchers) that it was unlikely that the human could shape his hands in this manner, achieving the smooth perfect design required for Bernouli's to kick in. Therefore, since he still believes that lift forces are involved, he started studying on other means by which those forces could be produced.
In other words, there are more than one way to create lift effect. I obviously have no clue about which principles are involved exactly, I prefer to follow the development as a spectator having the highest consideration the works done by these researchers who don't hesitate questionning their own beliefs as soon as some significant evidence pops up. So for me as a coach, there's not much controversy there. As you smartly point out in your introductory clip, you need both Lift and Drag forces to be successful in the water, regarless of the origin of these lift forces.
Keep up the good work.
Thank you for the posts, and the work on the videos. Your efforts give me more alternatives for explanations of why we should strive for better efficiencies. As humans, with our structure, we cannot achieve the laminar flow of a highly efficient wing, but I believe we can strive for some lift. The Wright Brothers flew with an extremely inefficient airfoil. So can we, in a much more dense fluid. I believe there is a case for the mix of lift and drag propulsion.
