Flying ZX3s on Trilite Truss

[steveBP]

Hi Folks

 

I am wishing to fly a couple of EV Zx3s on a 4m Trilite 200 truss.

 

My truss is mounted onto the steels portal roof frame of a building using 2 pairs of M12 Doughty half couplers one pair at each end and rated at about 450Kg each. I have also a a safety bonds at each end round the truss and the portal frame fixed with 600Kg rated Doughty link. All screwed joints have locknuts and are locktighted. I have had confirmation from the achitect that the portal frame will allow me to support up to 500Kg.

 

I wish to fly a pair of EV Zx3 speakers (about 26Kg each) one on each end of the truss. I also wish to mount stage lighting and a pair of projectors on the truss. Each of the items will have it's own safety bond.

 

I have read around some of the other threads on this sort of thing but I had a couple of questions for you guys.

 

1. Can you recommend the best way to mount my speakers please to minimise the vibration onto the truss so that it does not disturb the projectors. I have read up on the ZX3 and it has a number of M8 mounting holes for eye-bolts.

 

2. Have I missed anything ?

 

2. Do I need to get my truss and rigging certified for a public building ?

 

Thanks in advance

[Matt Riley]

To answer question 1 - If I were you I'd use the recommended flying frame - the HA 3 and VSA-1 mounting arm. I'm sure any reputable dealer can get them in relatively painlessly. I doubt vibration will be the issue you think it will in this application. You could also get flying wires made up by a competent person using suitably rated dogs or nicopress ferrules and suitably rated wire rope.

[steveBP]

Hi Matt

 

Thanks for the post. I had found the truss adaptors but I had thought rotating the speakers through 90 degrees, to take advantage of the horn angles for a small room, also they would look more subtle in the roof when mounted on the side.

 

I will check out getting the wires made up as this sounds the best option, and anchoring the wires to the truss, as this would be pretty simple. Since I live in north devon and there probably isn't a local dealer for about 100 miles, I will hit google for a suitable compitent dealer.

 

As far as the regulations side of things, anyone else got any ideas please ?

 

Cheers again

 

Steve

[jonathanhill]

Go to Rope Assemblies for your steels, they will make up whatever you need and also supply certificates.

[Pete McCrea]

Get the MB3 mounting bracket, and a suitable half coupler or two. This will enable the MB3 to be mounted long edge parallel to the truss, and then the box to be angled down as required.

 

Feel free to PM if you want a price on the MB3 as we have an account with EV, so potentially can get the items shipped direct to you.

[steveBP]

Go to Rope Assemblies for your steels, they will make up whatever you need and also supply certificates.

 

Thanks Jonathan.

 

These guys are definately the way forward, the wires should keep the vibrations down and the certificates are good for the risk assesments guys. It also allows me to make the most of my truss length, 4m soon disapears when you start loading the lights and projectors on.

 

steve