CurtPalme.com Home Theater Forum

[racerxnet]

Can someone verify that the HD 144 lens needs to sit closer to the tube face on a Marquee? The Joust plates are hard to come by and I have a machine shop to make the plates from aluminum stock I have laying around. The web page shows the plate mounting to the back of the original and slots cut into it for the barrel to pass through. If the lens needs to be positioned as the original I could make the plates mount in the stock housing. I see it pivots on 2 pins on the plate. If mounted at the original position I don't remember if there is enough adjustment (coil bind) for proper focus.

Thank You,

Mark

[tschaeikaei]

Yes it needs to be closer. I have seen the info somewhere, wanted to do the same thing.
But i currently can't recall where you could look it up, maybe on AVS.
Regards, Julian

[draganm]

hey racer replying to your PM on AVS here since I am here more often. I do not have a full set, I have only one plate I saved to use as a pattern. I could possibly provide a CAD drawing, but work is too busy now to devote any time to making a set. I used to be able to do this but I'm just too tired now to work till 7 or 8 pm and I'm swamped at work thru January

Yes, they need to sit closer by quite a bit. Basically, about .7" inches closer. Look at this pic, this is how my plates work. The factory plate is notched so that the HD145 goes thru with no cutting of the lens. then there is a .2" spacers and the adapter screws to the BACK of the original plate thru the old HD8 mounting holes. The old plate is 1/2" thick, +.2 spacer, = .7" .

I have all the spacers and screws here too.

[racerxnet]

Draganm,

Thanks for the pictures. I bought some 144 lenses and the mount has been cut/shaved on 4 corners. I also pulled the mounting plates out of a NEC that had 145's. Thought I might machine down the NEC plates to fit behind the Marquee. Not sure if it is worth the time as flat stock aluminum is cheaper than my time. Thanks for the pictures. They help in visualizing the assembly. I'll fire up my AutoCad program and get moving.

Thanks,

MAK

[draganm]

I looked and can't find a CAD file, but I have the CNC codes. This is with the

1) outside of the plate band-sawed rough
2) ganged up and 2 long sides skim cut for parallelism in the vice.
3) CNC mill- This does the 4 counter bored holes ( 8-32 screws to hold plate onto original HD-8 lens screw holes ), and the 4 x 10-24 screws that hold the HD145 down. Last but not least it pops out the center bore for the HD-145 and skim cuts the left/right edges which are the top/bottom of the plate (just for aesthetics).

Program zero is the center of the big hole, all other features are symmetrical.


%
O8501 (HD-145/144 ADAPTER PLATES)
N1 (SPOT DRILL)
G00 G90 G55
T1 M06
X2.125 Y2.125 S3000 M03
G43 Z1. H01
M08
G73 Z-0.095 R0.05 F12. Q0.05
Y-2.125
X-2.125
Y2.125
X-2.951 Y2.366
Y-2.366
X2.951
Y2.366
X2.505 Y0
G80 M09
M05
G49 Z0
M01
N2 (.216 DRILL)
G90 G00 G55
T2 M06
X2.505 Y0 S3000 M03
G43 Z1. H02
M08
G73 Z-0.35 R0.05 F12. Q0.07
X-2.951 Y2.366
Y-2.366
X2.951
Y2.366
M09
G00 Z1.
M05
G49 Z0
M01
N3 (.34 MILL C BORE)
G90 G00 G55
T3 M06
X-2.951 Y2.366 S2000 M03
G43 Z1. H03
M08
G73 Z-0.19 R0.05 F8. Q0.03
Y-2.366
X2.951
Y2.366
M09
G00 Z1.
M05
G49 Z0
M01
N4 ( .147 DRILL MINOR)
T4 M06
G00 G90 G55
X2.125 Y2.125 S3000 M03
G43 Z1. H04
M08
G73 Z-0.35 R0.05 F14. Q0.07
Y-2.125
X-2.125
Y2.125
G80 M09
M05
G49 Z0.
M01
N5 (10-24 TAP)
G00 G90 G55
T5 M06
X2.125 Y2.125 S960 M03
G43 Z1. H05
G84 Z-0.6 R0.3 F40.
Y-2.125
X-2.125
Y2.125
G80 M09
M05
G49 Z0
M01
N6 (.25 MILL)
G00 G90 G55
T6 M06
X2.49 Y0 S3000 M03
G43 Z1. H06
M08
G73 Z-0.35 R0.05 F15. Q0.03
G80
G00 Z0.1
G01 Z-0.35 F15.
G03 I-2.49 Y0 J0
G1 X2.5 G41 D6
G03 I-2.5 Y0 J0 L2
G1 X2.4 G40
G00 Z0.25
X-3.625 Y-2.5
G01 Z-0.35 F40.
Y2.5 F20.
G00 Z0.25
X3.625
G01 Z-0.35 F20.
Y-2.5 F20.
M09
G00 Z1. M05
G49 Z0
M01
G53 Y0
M30
%