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akajester
Joined: 09 Jul 2008
Posts: 934
Location: Wisconsin
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| Posted: Mon Sep 27, 2010 7:50 pm Post subject: help fitting HD145 lenses on BG808s |
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So, I bought some HD145's and now the dilemma of how to fit them on my bg808s. The projector is ceiling mounted and I REALLY don't want to take it down. I did some searching and found a way to hack apart the HD8 mounts and glue in the HD145's. Not sure that's such a good idea.
I've seen the Joust adapters but I don't want to invest that kind of cash. Maybe if they're second hand? Also. do those adapters require you to have the projector down?
Someone mentioned a thread with templates you could use to make your own. I can't find those anywhere. I could cut them from plastic possibly if I had the templates. Anyone have copies of those templates one could print out?
Another dumb question. Once I do this, will I need to move my pj forward?
Thanks!
Dale
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Tom.W
Joined: 09 Mar 2006
Posts: 6635
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| Posted: Mon Sep 27, 2010 8:02 pm Post subject: |
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Yes you will have to move your projector or screen about 12 inches closer together. You do not have to pull down the projector to mount the new lenses. Buy the Joust adapters new or used.
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akajester
Joined: 09 Jul 2008
Posts: 934
Location: Wisconsin
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| Posted: Mon Sep 27, 2010 8:36 pm Post subject: |
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Argh, 12 inches. That means I'll need to take it down and move the uni-strut mount closer. yikes... 
dale
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Elaine Benes
Joined: 25 Apr 2006
Posts: 1416
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Tom.W
Joined: 09 Mar 2006
Posts: 6635
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| Posted: Mon Sep 27, 2010 8:49 pm Post subject: |
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Are your HD145 lenses color filtered ?
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akajester
Joined: 09 Jul 2008
Posts: 934
Location: Wisconsin
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| Posted: Mon Sep 27, 2010 8:51 pm Post subject: |
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Thanks, I did read that thread, but found no templates or measurements on how to diy. The originator was a guy from Finland named Bjorn, and I found his website that tells how to do it, but again has no measurements or templates to follow. I suppose when I get the lenses I could just use the base as a guide?
dale
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akajester
Joined: 09 Jul 2008
Posts: 934
Location: Wisconsin
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| Posted: Mon Sep 27, 2010 8:52 pm Post subject: |
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| Tom.W wrote: | | Are your HD145 lenses color filtered ? |
Yes.
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Tom.W
Joined: 09 Mar 2006
Posts: 6635
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| Posted: Mon Sep 27, 2010 9:31 pm Post subject: |
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Once you try the the new lenses you will never go back to HD8s ! Better overall focus and Reds and Greens will look far more accurate.
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zGman
Joined: 22 May 2006
Posts: 599
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| Posted: Tue Sep 28, 2010 4:02 am Post subject: |
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Actually about 8" less throw distance for HD145's on an 8 foot wide screen.
(it's the 144's that are 12" closer) Best to check with PJ on moveable cart.
Also, the lens to tube spacing is quite important - for an 8' screen the
lens will be very close to the tube face. Hence all the cutting and spacing, etc...
G
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Ile
Joined: 09 Mar 2006
Posts: 1491
Location: Jyväskylä, Finland
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| Posted: Tue Sep 28, 2010 7:43 am Post subject: |
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| akajester wrote: | Thanks, I did read that thread, but found no templates or measurements on how to diy. The originator was a guy from Finland named Bjorn, and I found his website that tells how to do it, but again has no measurements or templates to follow. I suppose when I get the lenses I could just use the base as a guide?
dale |
I think that Bjorn posted dimensional drawings to avs, so he probably still have that.
Here's he's email.
http://www.crtht.com/contact.htm
Last edited by Ile on Tue Sep 28, 2010 11:36 am; edited 1 time in total
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Tom.W
Joined: 09 Mar 2006
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akajester
Joined: 09 Jul 2008
Posts: 934
Location: Wisconsin
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| Posted: Tue Sep 28, 2010 12:11 pm Post subject: |
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as always, thanks for the info guys. I'll see what I can find out.
Dale
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nuttall_chris
Joined: 08 Mar 2006
Posts: 832
Location: Ottawa, Ontario, Canada
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Ile
Joined: 09 Mar 2006
Posts: 1491
Location: Jyväskylä, Finland
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| Posted: Tue Sep 28, 2010 12:42 pm Post subject: |
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It's not as simple for 808 that it's for Marquee, problem is that you have to get hd144 base inside original tube/lens frame that is hollow aluminium casting. So it can't be just machined, it need something to hold lenses there also.
If I were making this for myself, I'd investigate if it's possible to make just four small profile clamps per lens and cut holes to original tube/lens frame to get space for these. That should be easiest way I can think of and pretty simple adapters to make.
If this is working it's better than Bjorn adapters, because original Graphics Sheimpflug can still be used.
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akajester
Joined: 09 Jul 2008
Posts: 934
Location: Wisconsin
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| Posted: Thu Sep 30, 2010 3:46 pm Post subject: |
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I'm getting quotes from a few local shops to have mounting plates cut out of aluminum. Thanks for your help everyone! I'm super excited to get the lenses mounted!
Dale
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akajester
Joined: 09 Jul 2008
Posts: 934
Location: Wisconsin
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| Posted: Sun Oct 03, 2010 12:29 pm Post subject: |
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HD-145's arrived Friday safe and sound. They look amazing! I can't wait to get the on the pj to see what they can do.
Dale
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Sun Oct 03, 2010 1:52 pm Post subject: |
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I think you will be quite impressed with the HD145s, they blow away HD8s for sharpness, I have a friend whose using a 1272Q with the stock HD8's, he wants my HD6s from my currently non functional 9PG.
Enjoy them 
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