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Answer to questions re Angle of projection of the Centre of Mass (COM) at take-off for Sergei Bubka and Renaud Lavillenie on 6.00m and 6.01m clearances. Bubka's angle of projection is approximately 18 degrees to the horizontal whilst Lavillenie's angle of projection I have calculated to be approxima...

Readers please re read pages 3,4 and 5 and assess in your own opinion if Will is saying something new or unknown by coaches. In fact these pages show the simple math, free-body diagrams with respect to the pendular motion of a vaulter with respect to the "Gravity Force Vector" ie that forc...

He doesn't push, he PRESSES UP with the inside pad of his left hand! Charlie thank you for your emphatic response that Renaud "presses up". Can you elaborate and clarify why or if you think Renaud intentionally presses upward. I can accept that this is what a vaulter reports as occurring ...

Thank you CANAG for your clarification re video and the suggested angles. I'm very happy that you acknowledged the video owner and the source. I have downloaded every single frame of the jump sequence I have referred to and will attempt to take account of the distortion introduced by the rectangular...

Canag I enjoyed the cartoon. Your clarification re gravity vector is why I stated “ … approximately -9.8 m/s/s”. Bob Beamon’s phenomenal long jump WR in Mexico (1968 Olympics) might just have been increased by about the amount you suggest! Kirk, I am very conversant with Linthornes paper you refer t...

Displacement Path Renaud Lavillenie's COM 6.01m Jump Aubiere February 22nd 2015 frames 1355, 1360, 1365 and 1370.jpg The diagram below gives an indication of the uncertainty of measures in digitizing and determination of the COM for a different vault by Renaud Lavillenie. The diagram indicates the ...

The accounts of what Renaud Lavillenie does during the pole compression (phase 1 of pole support… to indicate that the pole is in contact with the ground via the planting box and that the vaulter is being supported without ground level contact other than by means of the pole) have been wildly exagge...

Renaud Lavillenie as of February 2015 videos showing his current vaulting technique. 1 Renaud Lavillenie 6.00m 2015. https://www.youtube.com/watch?v=NC1_vdhvmwc 2 Renaud Lavillenie Michelin Capital Perche 2015 (slow motion) https://www.youtube.com/watch?v=Wp1bcKiPkIE The image sequence that follows ...

I have been very much engaged with significant changes taking place in my life and unable to continue my detailed mechanics (physics based comparative analysis) of the techniques employed by both Bubka and Lavillenie as I would have liked. However, some stability has returned and I will soon be able...

I love frames #5 and #6 (shown in PVStudent's posts above) of Lavillenie's 6.01m vault! This "C" position is why he's the WR now! Say what you will about his technique after the C (with distinct differences from SB), but if you can't get to the C (as he has), then if you want to vault hig...

Renaud Lavillenie Sequence continued … Renaud Lavillenie sequence for 6.01m vault 2014 4.jpg Renaud Lavillenie sequence for 6.01m vault 2014 5.jpg In the diagram below I have drawn the Renaud Lavillenie vault sequence from the take-off foot toes breaking ground contact to the instant of estimated pe...

So that discussants and readers can refer to the same evidentiary sources, the Renaud Lavillenie technique analysis that follows in this and subsequent posts will use the still frame sequence of Renaud Lavillenie’s 6.01m performance obtained from the reference video as an exemplar typical of his sta...