Getting up to 35 ft high projector to change bulbs or filters?

[wogster]

Originally Posted by collinong

good suggestion, but unfortunately, there is nothing above the sanctuary but the roofing tiles. i would think that it would be hard to get the projector in the right position and stable using just cables, though. i could see a movable platform but it's not doable in this case.

One other thing, do you really need your projector at ceiling height? One of the issues with the projector at that height, other then getting at it, what is the angle of view, from the seats. If I am sitting in the front row, will I be able to see the screen without needing a Chiropractor visit after the service? If you can put the projector lower, say even with the main lights, then it would be a lot easier to service.

[collinong]

Originally Posted by tedanderson

We had to come to the realization that owning a building with high ceilings requires the ownership of a lift.
...
If for some reason you need to take the projector off of the mount, you really don't want to be standing on an A-frame ladder as you dismount it.

The way I figure is that if the budget allows for so many hundreds of thousands to buy/build a building, a lift needs to be part of that budget.

Good points. But at my current church I have a hard time figuring out where we'd store the Little Giant A-frame ladder when folded. There is seriously no place to store the lift. I guess if it comes to it, we could just rent one each time. At my previous church I went up to service the projector on a Little Giant and you just take the work slow and deliberate. I think I went up with a replacement projector, swapped them and came down with the old one. Again, just took it slow.

Originally Posted by wogster

One other thing, do you really need your projector at ceiling height? One of the issues with the projector at that height, other then getting at it, what is the angle of view, from the seats. If I am sitting in the front row, will I be able to see the screen without needing a Chiropractor visit after the service? If you can put the projector lower, say even with the main lights, then it would be a lot easier to service.

It won't be exactly at ceiling height, but if the projector positioning calculators are to be believed, it should be 34" from the ceiling. The screens can't be much lower than how I've drawn them in, because the heads of worship team members on the stage would be right at the bottom of the screens if they were much lower. We tried sitting in various seats with a mock screen and it seems ok with just upward glance. It is a hard compromise between front row and back row seats.

[wogster]

Originally Posted by collinong

Good points. But at my current church I have a hard time figuring out where we'd store the Little Giant A-frame ladder when folded. There is seriously no place to store the lift. I guess if it comes to it, we could just rent one each time. At my previous church I went up to service the projector on a Little Giant and you just take the work slow and deliberate. I think I went up with a replacement projector, swapped them and came down with the old one. Again, just took it slow.



It won't be exactly at ceiling height, but if the projector positioning calculators are to be believed, it should be 34" from the ceiling. The screens can't be much lower than how I've drawn them in, because the heads of worship team members on the stage would be right at the bottom of the screens if they were much lower. We tried sitting in various seats with a mock screen and it seems ok with just upward glance. It is a hard compromise between front row and back row seats.

You need to call the local rental place and see how much it costs to rent a lift, given a 5 hour a week duty cycle and a 1000 hour lamp life, your replacing a bulb about every 3½ years. Even if the lift rental is expensive, if you amortize that over the life of the bulb, it's not so much. Projector lamp life ratings are getting longer, I saw one online recently that was rated 6,000 hours. Your likely to replace the projector, before you replace the bulb....

[dmot]

Looking at the picture again, I would agree with Andrew that you need to be careful about the ambient light. I don't know if this is your usual service time in the picture, or what the weather was like, but it looks like that sky light puts a lot of light on the wall on left side of the sanctuary. You might want to put the screen that you show in the picture over their just to see what it looks like. Even with a 6,000 lumen projector it might be a problem. You might also consider what it would look like with a normal picture on the right and a washed picture on the left. Would that be distracting?

No need to reply. Just random thoughts.

[Paris MkVI]

What Ted said, whether you are buying or renting. We currently rent a lift for tasks all over the building a fixed number of times a year. I coordinate with those rentals to do my maintenance on rigging over the chairs.

I use scaffolding for rigging over the stage - our stage will not accommodate a lift.

[Stever]

I think you will find that many projectors now have filter cartridges with 8-10000 hours lifespan and up to 3000 hour lamp life so it would appear that maintenance costs will be minimal

[bbrunskill]

Take out a few pews, use a ladder. Easy, cheap, safe if you take some care.

[collinong]

I've updated my other post with a picture of the end result of the projector install. As it turns out, the projector mounting location isn't above the pews, so a 21 ft Little Giant ladder will work ok to reach it for servicing. We don't have one, but it's more reasonable than owning a lift or even renting one regularly.