Mine doesn't have a bracket that goes across the center like yours, instead it's a dual bracket on the sides... And they are just far enough appart to not allow a mount like that to bridge the gap.The Moving Head almost always comes with a Bracket. All you have to do is bore a Hole in the Speaker Stand adapter and with a Bolt, washer, split washer and nut, ..... attach the Bracket to the Adapter. Leave it on the Light and just slip it on and off as needed.
I ran the light for over an hour at the stands highest point and the light never moved on the platform and barely made the tripod sway.I think Rob's setup is the same as Canute's .. substituting a plywood shelf for the bracket (though if Rob's fixture isn't physically secured to the plywood, Canute's will be safer) ... tomayto, tomahto.
Are those that use truss totems securing their lights to the top or are ya just sitting them up there?
I think you mentioned that before Rob when you first purchased those lights. If I recall correctly, I recommended that you buy a piece of thick aluminum and make a small plate where you can drill holes to attach your brackets. Then drill a hole in the middle of the plate and attach it with a center Bolt and Nut. Don't use a screw for the middle. The four holes on the speaker bracket in my picture are not being usedMine doesn't have a bracket that goes across the center like yours, instead it's a dual bracket on the sides... And they are just far enough appart to not allow a mount like that to bridge the gap.
I ran it on Fast Auto at the top height and saw very minor sway.Question to both Rob and Canute .. Do you find the stand stable enough that there is no shake when the light moves?