Attaching a projector to a girder?

[Karel Bata]

Any ideas on a cheap way to attach a projector to an overhead girder? It'll be up there for a month, so hiring something would be expensive. No real budget.

Projector is 260 x 216 x 60, and weighs 2.5kg (with media player). Not a big one. Venting is out of the front.

 

I have plenty of time, and a skilled helper, to make/adapt something.

Cheers!

 

[sandall]

Difficult to suggest how to hang it without knowing anything about the girder, but basically you need either a shelf, a shallow box tray with some form of hanging bracket or a hanging pole with a plate that screws to the bottom of the (upside-down) projector. Hanging poles are available at various price points; box trays can be made up from whatever metal or wood that you have around. Normal caveats apply about mounting anything above where people might be.

[Dave m]

if it's scaf, then a simple truss clamp or G clamp off amazon might do? just replacing the short bolt with something like studding for more drop.

then a home made plate

 

But I have used tons of these

 

 

 

https://www.amazon.co.uk/Luxburg®-Universal-Aluminium-Projector-Mounting/dp/B00OS3BD8S/ref=sr_1_9?keywords=projector+ceiling+mount&qid=1574247716&sr=8-9

 

you'd have to engineer a girder clamp it's an I beam. Plus a safety.

[Seano]

Any ideas on a cheap way to attach a projector to an overhead girder?

 

A pair of gravlocks and a short piece of scaff, then hang your projector exactly as you would from a truss or a lighting bar.

[indyld]

If you have the projector mounting bracket, then it's a fairly simple job. Use gravlocks and scaff if you have the facility to attach to that (half coupler, hook clamp, Unicol expensive-and-hateful-hooky-thingy-that-doesn't-do-as-good-a-job-as-it's-price-tag-suggests).

 

If no scaff mounting system and want a lower profile with a directly bolted mount, then Unistrut channel and bits of stud, bolts, nuts, washers, and whatever else clamps that grip the I beam.

[pmiller056]

Unistrut (or compatible competitor). Also known as big boy's Meccano.

[jonathanhill]

Agreed, Unistrut and Lindaptor girder fixings would be the way I would do it.

[Karel Bata]

Really good suggestions. Thanks.

 

I'm thinking of perhaps using a steel document tray and building around that. Then add the gravlocks and a bit of scaff.

I've got a few months to do this.

[indyld]

I'm thinking of perhaps using a steel document tray and building around that. Then add the gravlocks and a bit of scaff.

 

If you don't have a mounting bracket for the projector, including the relevant holes in the right places, and don't fancy fabricating one from a document tray one option that I've seen is a wide piece of slotted cable tray as the basis for a custom cradle that sits under the projector. Alternatively, the slots in the tray plus big washers are used along with the mounting screws to attach the projector to the metalwork that clamps the girder.

Edited November 21, 2019 by indyld

[Karel Bata]

That's an interesting idea.

[alistermorton]

We made one with a plate to screw to the projector, a "universal joint" two way knuckle to allow leeway in final alignment, and a half coupler, all bolted up. Wire safety from the hardpoint on the projector to the bar for additional security.

[TimmyTee]

I'll be working in a place this afternoon that has a projector in just this position, I'll grab you a photo later.

[TimmyTee]

Any tips on adding photos here?

[CPlater1]

To add photos, use a site like imgur, and copy the link.

[alistermorton]

Host them on a photo sharing site, then post a link to them, using the chain link icon on the editor (It stops the site's storage requirements (and hence running costs) from skyrocketing by saving images elsewhere).