Ideas for small scale DR line array stands

[DAVID_L_PERRY]

Soliciting Feedback on an idea I've had. Imagine a kid's swingset as you find them at playgrounds, but with the crossbar shortened up to about 2.5' across. I'm imagining the two legs of the sides would be braced and held together by a bar in the middle to prevent flexing and the two sides could be tied together by bars across the bottom. Some pulley hardware strapped to the top crossbar would allow a hanging assembly to be raised to the top height once the unit is assembled and flipped over on to it's base. .

I have this exact settup detailed at work. I will try and post it monday. It was one of the many many options passed to and fro between myself and a couple of other BF users...It was also the early tray concept idea.

Aluminium tubes set in an A frame, winch pulley, telescopic tubes....

Dave

[gdougherty]

The shorter the span, the stronger it'd be. Make it only wide enough for the widest cabs you'll be using. In this case, 24" + an inch each side for clearance.

I'd been thinking to give myself a little swing room in the event it's placed on a slight incline so cabs don't hit the sides at top. Four inches wouldn't make that much a difference, would it?

Find some locking braces like those used on a table leg, only longer. Hinge each pair of legs together at the top. Then each side would fold up nice and neat, less assembly/tear down time.

Conceptually I like the idea, however I was going for maximum durability. I suppose you could have the legs hinged on a piece that mounts the top bracket, but I'd still be worried about long term strength.

Or even chains, criss-crossed from leg to leg. All of the weight would be pushing out anyway. That would take a test try though.

Was thinking the cross bars if mounted to the bottom of the legs at a 90 could help distribute weight and negate the need for some sort of foot-type platform to keep it from sinking into the ground outdoors. Like the simplicity of the chains though, certainly less weight... Less weight is good... But then you need some type of foot again...

You can buy 1,000 lb capacity boat winches for about $20. Mount one on one of the legs and run the cable to a pulley on top.

Perfect, I like very much. Bolt it onto a leg I think...

Think in terms of steel tubing. Pipe that size would be awfully heavy.

I hadn't quite figured out what to use as material. Conduit type piping is light, but correspondingly seems weak. I could put up with a bit of weight if it meant the whole thing would be quite strong. I think... I'm not sure what you're thinking of for steel tubing. I'd only been thinking in terms of stuff I could find or use as the basis of fabrication from a local HD type store.

Most people don't have the capacity to haul something 16' long, so multiple sections, or better yet, telescoping sections would be a must. If you went with multiple sections you'd need a very solid coupler. I would not trust pipe threads with a side-load like that.

I'd been thinking the legs on the side would be two part, one part above the brace, and legs extending down from there. These could be built in 8' sections, matches the 8' crossbraces across the bottom and gives 8-10 parts that are all interchangeable, less hasle during assembly. Connections I'd imagined being a close fit into a sleeve at the joins with pins and then bolts to apply pressure like with traditional tripod speaker workings.

Also, 16 feet is really high. For stability you'd want at least a 1 on 3 ratio for leg stance. Figure a minimum of 5' w x 5' d for the legs with a 15' tall stand. Wider would be better.

Indeed, I was actually thinking an 8'x8' base dimension for the 16' high version. It's a fair amount of space, but that's 4' from center in all directions, only 3' more in each direction than the speakers themselves and in outdoor or indoor situations calling for a rig of this type the space could probably be spared.

[gdougherty]

Soliciting Feedback on an idea I've had. Imagine a kid's swingset as you find them at playgrounds, but with the crossbar shortened up to about 2.5' across. I'm imagining the two legs of the sides would be braced and held together by a bar in the middle to prevent flexing and the two sides could be tied together by bars across the bottom. Some pulley hardware strapped to the top crossbar would allow a hanging assembly to be raised to the top height once the unit is assembled and flipped over on to it's base. .

I have this exact settup detailed at work. I will try and post it monday. It was one of the many many options passed to and fro between myself and a couple of other BF users...It was also the early tray concept idea.

Aluminium tubes set in an A frame, winch pulley, telescopic tubes....

Dave

Would be very interested to hear more about your idea. Your take on Tim's idea came out quite well.

[DAVID_L_PERRY]

Here is the very early idea I sketched up using the winch:-



Abandoned the idea as a winch passing through pulleys does not lend itself to a quick settup/stripdown

It was one of a number of alternatives based upon an A frame. (lots of other ideas looked at wiht hte A frame but don't want to pass them on without the other BF users permission...and one of them is on walkabout at the moment )

I then looked very seriously at building this option

and then modified to this, based upon the Peavey versarray hoist


but weight and cost of fabrication put it too one side.

I ended up using simple idea for a few months for lifting my single DR280 tops:-



Dave