Coaches Bungee harness - please help

[Viggo]

Please study this short video carefully:

http://www.youtube.com/watch?v=lyg6vUQK6VE

I think this video is from somewhere in US.

This design of bungee rig is interesting for us and we should like to try it out.

Can you provide contact information on this gym?

Do you have any experience of such a rig?

Thanks for any reply

/Viggo, Denmark

 

[onebrokegymmum]

My daughters old club uses them for power tumbling.... they may be able to assist?

 

[JBS]

Cool...but I wouldn't recommend that design. The pulleys seem to be running on the bungees...which would cause wear. The main concern is that there is only one bungee per side though. I always double my bungees when working with them.

The design above looks far more useful.

 

[Viggo]

Thanks for your replies.

I suppose, that the video uploaded by Kstp is a design with steel wires along the track. I know of one of the same at Skyum Idrætsefterskole in Denmark of similar design:
http://www.youtube.com/watch?v=nbD0a6jrrvM

This is of cause better. Someone in Denmark has tried to use a steel bar system, but it was not succesfull. The Kstp video is from Australia, but where more exsactly?

I have been informed, that the steel wires require tremendius support from the building structure - about 20 tons of load. Therefore the building needs to be made to support that load, and it is expensive for other Buildings.

Acording to my calculations, the bungee rig from my question is better than a system with only two fixed points at the ceiling. And I agree about the Wear on the chock cords. However the lines can be split, because you only need about 3 m chock cord at each of the 4 fixed points and then a normal line between to support the Blocks. It will not be possible to use longe.