Search found 711 matches

by Tim McMichael
Wed Jun 25, 2014 11:45 am
Forum: Pole Vault - Advanced Technique
Topic: GRV: Lavillenie - From Stall Swing to World Record
Replies: 238
Views: 195045

Re: GRV: Lavillenie - From Stall Swing to World Record

However what really bothers me is the question of how you teach vaulters to jump like this in safety? With the Petrov Bybka model it is easy to take an absolute beginner forward in safety with a technical model that will be valid from their first take off until they break the world record. As I am ...
by Tim McMichael
Sat Jun 21, 2014 8:29 pm
Forum: Pole Vault - Advanced Technique
Topic: GRV: Lavillenie - From Stall Swing to World Record
Replies: 238
Views: 195045

Re: GRV: Lavillenie - From Stall Swing to World Record

Tuck and shoot is necessary for some vaulters to safely complete the attempt but it is much less efficient in executing the "spiral turn and push off" that completes the second phase of pole support. But Lavillenie comes from as extreme a tuck and can be imagined. It can't be "much l...
by Tim McMichael
Thu May 29, 2014 4:29 pm
Forum: Pole Vault - Advanced Technique
Topic: GRV: Lavillenie - From Stall Swing to World Record
Replies: 238
Views: 195045

Re: GRV: Lavillenie - From Stall Swing to World Record

A double leg swing lowers the vautler's COM. That factor outweighs having a shorter trail leg unless the trail leg is very long with a very powerful swing, in which case it is a wash, in my experience. I jumped just as high both ways, and I have seen so many high jumps with a double leg swing and wi...
by Tim McMichael
Mon May 26, 2014 9:45 pm
Forum: Pole Vault - Advanced Technique
Topic: GRV: Lavillenie - From Stall Swing to World Record
Replies: 238
Views: 195045

Re: GRV: Lavillenie - From Stall Swing to World Record

Tim, in hindsight (and if you weren't coached and influenced by the Dials and had the right Petrov Model coach) if you had it to do over again, would you have followed the Petrov Model instead of the Oklahoma / Dial Model? Part of the reason I'm asking is that I recall that you considered your phys...
by Tim McMichael
Thu May 22, 2014 1:05 pm
Forum: Pole Vault - Advanced Technique
Topic: GRV: Lavillenie - From Stall Swing to World Record
Replies: 238
Views: 195045

Re: GRV: Lavillenie - From Stall Swing to World Record

Classical ideas were almost always looking for singular max min situations. In the case of the pole vault, that would be that there would be one perfect form for the vault. Now, with more modern physics, chaos theory crops up, which says complex dynamic systems may have multiple or many stable stat...
by Tim McMichael
Thu May 22, 2014 12:45 pm
Forum: Pole Vault - Advanced Technique
Topic: Physics Based Critique of the Petrov Method
Replies: 89
Views: 115550

Re: Physics Based Critique of the Petrov Method

For anyone interested, the tests yesterday showed that I am clear of cancer for the present, more tests in 6 months. This means that I hope to be on the West coast of the US from late June into July working with coaches of the caliber of Rick Baggett, Kevin Magula and hopefully Bubba Sparks. There ...
by Tim McMichael
Fri Apr 04, 2014 11:50 am
Forum: Pole Vault - Advanced Technique
Topic: Physics Based Critique of the Petrov Method
Replies: 89
Views: 115550

Re: Physics Based Critique of the Petrov Method

ADTF goes on to say: “The free takeoff is a flow or continuation of movements not a position or moment in time. Its a series of events not a photo. It is the ability of the vaulter to move thru the full running and jumping action at takeoff while receiving minimal tension on their body posture by t...
by Tim McMichael
Sat Mar 29, 2014 2:24 pm
Forum: Pole Vault - Advanced Technique
Topic: Physics Based Critique of the Petrov Method
Replies: 89
Views: 115550

Re: Physics Based Critique of the Petrov Method

The box does move! I concede the point and hang my head in abject humiliation. :crying: Yes...it does move. The only way I can think of to reduce this energy loss is to vault on a bigger planet. But then you have increased gravity, so...... In the two jumps in this video below, one a Fantastic Worl...
by Tim McMichael
Fri Mar 28, 2014 2:26 pm
Forum: Pole Vault - Advanced Technique
Topic: Physics Based Critique of the Petrov Method
Replies: 89
Views: 115550

Re: Physics Based Critique of the Petrov Method

But in simple terms if the pole is bent early the energy must come from somewhere -the only place it can come from is the vaulters speed as they leave the ground. They will have already lost a great deal of speed by taking off under -something they will have to do if they want to bend the pole befo...
by Tim McMichael
Wed Feb 26, 2014 3:14 pm
Forum: Pole Vault - General
Topic: Chronicles
Replies: 8
Views: 11916

Re: Chronicles

Winning There is darkness beneath the pain. The throbbing agony is still there, but it doesn’t touch me. Not where it matters. And the darkness seems infinite. I can go deeper, like a diver beneath a wreck. All that damage is on the surface, far away. And down here I still have my will, and my thoug...
by Tim McMichael
Mon Feb 17, 2014 10:44 am
Forum: Pole Vault - Advanced Technique
Topic: Lavillenie vs Bubka
Replies: 109
Views: 126401

Re: Lavillenie vs Bubka

You are correct that early vaulters did not try to bend the pole. Their focus was to swing very quickly and forcefully at a higher angle then todays vaulters. Any bend their got from their wood, steel or glass poles was the result of their speed, grip height and pole rating. Yes, Gill rated poles f...
by Tim McMichael
Mon Feb 17, 2014 5:11 am
Forum: Pole Vault - Advanced Technique
Topic: Lavillenie vs Bubka
Replies: 109
Views: 126401

Re: Lavillenie vs Bubka

A significant number (if not most) of the elite wood/steel/early glass vaulters from 1900 to early 1960's held both their arms very bent during the plant and takeoff. Although the concept "free take-off" was thought of by both Jim Graham and John Uelses, I cannot find any film of pictures...

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