High Jump: overlay of bars (Closed for comments)
Comments about this discussion:
Started
experience of Unicon17:
the overlay of bar on the apparatus was a clamp. Depending on detailed mounting of the clamp the bar was fixed more or less.
Consequence:Overlay of the bar must be defined.
proposal for Definition:
2.19.1.2 Setup
Old:
The bar must be held loosely in the jumping apparatus so it can fall or break away if the rider does not complete the desired height. Magnetic systems are not allowed.
New:
The bar must be held loosely with a IAAF certificated overlay or similar in the jumping apparatus so it can fall or break away if the rider does not complete the desired height. Magnetic systems are not allowed.
Comment
I don't like having to refer to another certification in our rulebook. Our rulebook should have all of the relevant required rules for a unicycling competition. Please include the useful parts of the IAAF definition here.
Comment
Good luck with that. If a rule liks this would pass virtually no competition other than Unicon would enforce it.
Comment
Why don't we want magnets?
Comment
Emilie
thanks for your comment but I don't agree, in most competitions Germany (also local competitions) we use bars from the athletics, this bars have a special endpieces with a flat overlay. such bars were also used at unicon16.
Compare this with the Equipment at Unicon 17. The bar laid on apparatus only at a single spot. The volunteers did their best but there was still a risk existing that the conditions can be different for the participants.
Therefore we should describe more details for the overlay of the bar, e. g.:
flat overlay on the apparatus with Minimum dimensions of....
endpiece of the bar with also a flat overlay
John,
your comment for magnetic Systems:
1. If we use magnetic System there is a risk for not correct use, for example fix the bar under tension, it will easy fall down. In the athletics also no magnetic Systems are allowed.
2. Broken bars:
At Unicon16 we saw a lot of broken bars.
The reason was that the riders for example touched the bar with their pedals. The bars were not flexible and broke.
But now flexible bar are available, last year in Germany competitions no bar was broken.
My conclusion is:
The reason for broken bars is never existing, the handling of magnetic Systems is not so easy therefore I would not allow magnetic systems
Comment
Reiner,
What exactly are you using now for the bar for the German competitions?
Comment
This is the link of the bar we use, Company Benz:
http://www.benz-sport.de/leichtathletik/hochsprung-staender-latten/stabhochsprung-latte-490.html?
We devide this 4,5m bar into 2 equal parts and order 2 additional endpieces
Comment
Having been one of the people manipulating the C-clamps during the high jump competition, I can verify that they are not very accurate and are a big pain the butt for the people moving them. I like the idea of using a different mechanism, but I am not sure if it should be in the rulebook. I was more concerned about how ad hoc the height measurement was; during Unicon 17, Elle and I basically guessed and Hugo came out and measured it in the center. Whether or not the bar was tilted was not really checked, as we were already moving too slow. I'd be interested in some sort of rule that will make sure the bar is the right height on both sides, but this thread isn't really the place for that. It's probable that using some sort of fancier system like Reiner suggests would eliminate that issue.
I'm in favor of no magnetic systems -- I could easily see a scenario where one rider's wheel lightly taps the bar and knocks it and another's hits it significantly harder but it stays on.
Comment
Reiner,
This should also be turned into a proposal if you can.