Originally Posted by Cameron
My biggest disappointment was about the price for the adapter plate in the first place.
$200+ for a plate of metal that really isn't strong enough for what it needed to be.
Yeah, but you know, I started thinking about why the plate is what it is.
Here's what I think:
You mount the pj to the plate and Chief mount to the plate. You hang that to whatever you're hanging, ceiling, extension pipe, etc. Now you level everything and get the image on the screen proper.
Then, you attach the lens/sled to the front part of the plate. When you do that, the plate sags. That's what the chains are for. You tighten up the chains, pulling up the plate, until your image is right and you're done.
My thinking is that the plate is intended to be what it is so that the weight of the whole assembly is distributed better. If the plate was thick enough to handle everything, you'd have a very awkward load on the Chief mount. When I mounted the lens/sled and before I installed the chains, I noticed that even though I tightened the set screws really, really tight on the Chief mount, the whole thing still wanted to tilt down in the front.
Does that make any sense?