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Tom.W
Joined: 09 Mar 2006
Posts: 6635
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| Posted: Sat Jan 06, 2007 4:49 pm Post subject: |
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Galen's adapters only use the removable mounting assembly for the HD-8 . To get it off you remove the focus knobs and and focus pins on the HD-8 . The pins can be removed with a pair of pliers as the very end is square . Just don't botch the threads 
Last edited by Tom.W on Sun Jan 07, 2007 8:01 pm; edited 1 time in total
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zGman
Joined: 22 May 2006
Posts: 599
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| Posted: Sat Jan 06, 2007 4:52 pm Post subject: |
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Hello Lee,
Probably when you disassemble the HD8 base
from the HD8 lens body(very easy), you will
be more able to see how things actually work.
Cheers,
G
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picree
Joined: 31 Mar 2006
Posts: 351
Location: Johnson City, TN
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| Posted: Sat Jan 06, 2007 5:58 pm Post subject: |
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The lens assemblies remain intact. So the lenses are not hybrids...
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Ile
Joined: 09 Mar 2006
Posts: 1491
Location: Jyväskylä, Finland
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| Posted: Sun Jan 07, 2007 7:00 pm Post subject: |
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Things would be much easier, if you guys are ready to saw HD144 earings off. Then original mounting plates can remain un touched.
Lens can then be glued using polyurethane sealing/adhesive compound to plastic adapter.
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Tom.W
Joined: 09 Mar 2006
Posts: 6635
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| Posted: Sun Jan 07, 2007 9:13 pm Post subject: |
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Another possibility is to make a simple flat aluminum plate to fit the HD-144/145 mounting holes to the HD-8 mount plate and then machine the existing HD-144/145 lens mount for more range by extending the cutouts in the body and thereby increasing the focus range of the HD-144/145 lens assembly . Will have to take a closer look at the HD-144 focus mounts I have here though ....
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Ile
Joined: 09 Mar 2006
Posts: 1491
Location: Jyväskylä, Finland
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| Posted: Sun Jan 07, 2007 9:39 pm Post subject: |
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| Tom.W wrote: | | Another possibility is to make a simple flat aluminum plate to fit the HD-144/145 mounting holes to the HD-8 mount plate and then machine the existing HD-144/145 lens mount for more range by extending the cutouts in the body and thereby increasing the focus range of the HD-144/145 lens assembly . Will have to take a closer look at the HD-144 focus mounts I have here though .... |
I suggested that in that other thread, but I realised that there is not that much room to extend cutouts because of those ribs. Maybe new cutout about 13 mm (5 mm adapter plate) closer to back will work? Maybe also front edge is needed to cut some amount?
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Joust
Joined: 05 May 2006
Posts: 2429
Location: Almonte, Ontario, Canada
TV/Projector: Marquee 8501LC
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| Posted: Mon Jan 08, 2007 1:00 am Post subject: |
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| Ile wrote: | Things would be much easier, if you guys are ready to saw HD144 earings off. Then original mounting plates can remain un touched.
Lens can then be glued using polyurethane sealing/adhesive compound to plastic adapter. |
This is similar to my original idea. However this design you posted here would be expensive to make.
My idea is such that the end user. would have to do a little work.
There will be a couple choices. one will be to mod the lens. The other will be to cut notched in the plate. I have to see if the plate option is really an option. I'm thinking from the pictures and discussions that the Lens mod may be a better option for the Barco.
This idea will only require 1 plate so the cost will be exactly the same as the Marquee.
So how much work are you Barco-ites willing to do?
With the lens mod the way i have in mind, you will be left with a lens module that will bolt directly into place of the HD8.
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dc_pilgrim
Joined: 31 Oct 2006
Posts: 225
Location: PA
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| Posted: Mon Jan 08, 2007 1:38 am Post subject: |
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| Quote: | | So how much work are you Barco-ites willing to do? |
The more idiot proof, the better.
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Joust
Joined: 05 May 2006
Posts: 2429
Location: Almonte, Ontario, Canada
TV/Projector: Marquee 8501LC
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| Posted: Mon Jan 08, 2007 1:47 am Post subject: |
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I wouldn't call you idiots. shoulda bought a marquee though
I'm bouncing ideas off my wife to see if the mods are in the realm of the average joe.
She was of the mind that the Marquee PLate cutouts are out of line there too though.
I have several ideas. Some of which involve u-bolts, straping or 2-part epoxy. Some use spacers or precision cuts as well. All will work.
Perhaps I'll write them all up and give options to the end user.
I would even be willing to do them for you but that would involve sending your lens base. (not the entire lens.)
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dc_pilgrim
Joined: 31 Oct 2006
Posts: 225
Location: PA
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| Posted: Mon Jan 08, 2007 2:03 am Post subject: |
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I knew that was coming. Be curious to see what the ideas are.
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zGman
Joined: 22 May 2006
Posts: 599
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| Posted: Mon Jan 08, 2007 6:00 am Post subject: |
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Funny....
What's next? duct tape and tongue depressors?
G
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Joust
Joined: 05 May 2006
Posts: 2429
Location: Almonte, Ontario, Canada
TV/Projector: Marquee 8501LC
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| Posted: Mon Jan 08, 2007 6:10 am Post subject: |
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Bailing wire perhaps, but not Duct tape. I hate that stuff.
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AnalogRocks
Forum Moderator
Joined: 08 Mar 2006
Posts: 26706
Location: Toronto, Ontario, Canada
TV/Projector: Sony 1252Q, AMPRO 4000G
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| Posted: Mon Jan 08, 2007 7:07 am Post subject: |
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| Joust wrote: | | Bailing wire perhaps, but not Duct tape. I hate that stuff. |
Alright you have just been ejected from the Possum lodge membership. The Red Green show will need the membership card back and the duct tape socks you recieved for signing up.
lol
_________________
Tech support for nothing
CRT.
HD done right!
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Joust
Joined: 05 May 2006
Posts: 2429
Location: Almonte, Ontario, Canada
TV/Projector: Marquee 8501LC
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| Posted: Mon Jan 08, 2007 1:48 pm Post subject: |
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| AnalogRocks wrote: | | Joust wrote: | | Bailing wire perhaps, but not Duct tape. I hate that stuff. |
Alright you have just been ejected from the Possum lodge membership. The Red Green show will need the membership card back and the duct tape socks you recieved for signing up.
lol |
I found Gaffer tape! 
Keep your stick on the ice 
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AnalogRocks
Forum Moderator
Joined: 08 Mar 2006
Posts: 26706
Location: Toronto, Ontario, Canada
TV/Projector: Sony 1252Q, AMPRO 4000G
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| Posted: Mon Jan 08, 2007 4:53 pm Post subject: |
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Ahhh Gaffer tape for the elitest taper in you. All the good looks of duct tape, non of the left over residue after removing it.
_________________
Tech support for nothing
CRT.
HD done right!
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Alaric
Joined: 17 Apr 2006
Posts: 127
Location: Huntingdon, Cambs, UK
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| Posted: Tue Jan 16, 2007 3:29 pm Post subject: |
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Hi There,
Right, i picked up a set of HD145 colour filtered lenses this morning from a friend (Thanks Mad) and had a quick look at the way the lenses work and the fittings.
The back focus knob works slightly differently to how i expected, in that it doesn't alter the distance of the back lens in relation to the rest of the lens, but adjusts the distance from the lens to the tube...Simple but it somehow works in the reverse of how i expected.
I understand why Galens are not hybrids....Wheres the big DOH smiley !
I also twig why the lens needs to be recessed into the housing otherwise the focus adjustment won't be fine or corse enough for the screen widths we want to play with - Actualy reading https://www.curtpalme.com/forum_archived/viewtopic.php@t=3450.html
Picree seems to state that the closer to the tube the lens back is the larger the screen capability is.
Anyway I now have the lenses, which means i am a step closer to doing this and am reasonably commited to getting it working...one way or tother.
cya,
Lee
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Alaric
Joined: 17 Apr 2006
Posts: 127
Location: Huntingdon, Cambs, UK
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| Posted: Fri Jan 26, 2007 9:31 am Post subject: |
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Hi There,
Popped the lens shroud off one of my hd145n's. There are two threaded special 'screw things' that hold it on. One has a wingnut on top which is how you adjust the main focus, the other is 180degrees round the lens. They both undo with a square socket, though not finding one so small i used an adjustable spaner, very carefuly as not to round of the square head. A little tricky but doable.
The lens body apears to be aluminium with a drilled and tapped holes for the 'screws'. There are however two more holes further in than the normal ones, one is quite close, the second a way back and a touch recessed - I would guess that these are fitting options for using the casting on other lenses.
The shroud is a black hard plastic, but i would have though it was cutable with a hacksaw and drillable with an electric drill.
From reading arround there is the problem of getting the lens closer to the tube for screen width focus and fitting the smaller lens in the bigger hole, complicated by the fact that the lug fitting on the smaller lens fouls the larger aparture when trying to fit the lens closer.
I'm wondering with a flat plate adaptor sat on the front of the large hole which would mount the lens, but not give the closeness if the shroud can not be modified, there is 1/2-1" that could be gained by trimming it flush with the lugs, or by turning the shroud through 90degrees so that new focus slide holes can be drilled to give greater depth, or a combination of trimming and new slots ?
I'm only brain storming at the moment, but have included three pics....I also don't know if my HD145N's are the same construction as the 144's and what the N stands for i'm also not sure.
Cya,
Lee
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Barry
Joined: 01 Feb 2007
Posts: 186
Location: Los Gatos , Ca.
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| Posted: Sun Feb 18, 2007 11:15 pm Post subject: |
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Are all HD-8s created equal? I understand that early lenses were glass tehn they switched to plastic. I just bought a 1995 Barco 1208 with lenses that say HD-8 Rev. B and weight almost 10lbs each. Are tehy glass or plastic? Does it matter?
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Addicted to buying cool used expensive toys...(especially CRT projectors) Barco 1209, 1208 and Elektra Espresso Maxi2 most recent additions.....
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Spotmatic
Joined: 29 Jun 2006
Posts: 531
Location: Gelderland, Netherlands
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| Posted: Mon Feb 19, 2007 8:00 am Post subject: |
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| Barry wrote: | | Are all HD-8s created equal? I understand that early lenses were glass tehn they switched to plastic. I just bought a 1995 Barco 1208 with lenses that say HD-8 Rev. B and weight almost 10lbs each. Are tehy glass or plastic? Does it matter? |
HD-8 rev. B's have a combination of glass and plastic (acrylic) lens elements, while the outer shell is made of plastic (there are early HD-8 rev. B's with a metal body, however, but these are rare). I have compared the HD-8 rev. B. to the original all-glass HD-8's and the Sony HACC PT-65's, and found the original HD-8's to be less sharp than the HD-8 rev. B's, which in turn are less sharp than the HACC PT-65's.
I cannot comment on the qualities of the HD-144's and HD-145's, as I only have seen the HD-145's on my previous Barco Data 701s and 708s, although I can say that these were sharper than the HD-6's...
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kal
Forum Administrator
Joined: 06 Mar 2006
Posts: 18114
Location: Ottawa, Canada
TV/Projector: JVC DLA-NZ7
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| Posted: Mon Feb 19, 2007 1:47 pm Post subject: |
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My experience with both the original HD8 (all metal), newer HD8B's (plastic casing), and various HD144/145's, is that regardless of the type of HD8's we're talking about, the 144/145's are considerably sharper.
Throw in the fact that the 144/145's are also colour filtered (the main reason people want them) and it's a no brainer as to which is better.
There's a reason why many HD8 Barco/Marquee owners are replacing their lenses with HD144/145's!
Kal
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