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Post by Casethecorvetteman on Dec 23, 2015 23:44:10 GMT -5
At long last, ive finally found some spare time to cut the old tubes out of the LC housings ready for the new ones to go in.
I just bought 2x 16oz bottles of techspray coolant, by the time it arrives i should have the new tubes sealed in ready to go.
Anyone know how much glycol it takes to fill a 9" Barco LC?
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Post by gjaky on Dec 24, 2015 5:21:12 GMT -5
Fill the tank with water, then pour out and measure how much was it.
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Post by Casethecorvetteman on Dec 24, 2015 8:41:03 GMT -5
Yeah id rather not do that, its a pain to fill them without a nozzle on a bottle
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Post by Casethecorvetteman on Dec 24, 2015 22:13:01 GMT -5
Ive just done the rounds of the housings covering the small scratches in there with some Permatex Ultra black, ill leave that for about 24 hours and check in the morning, hopefully itll take a nice hold.
Ill glue some leads on now!
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Post by Casethecorvetteman on Dec 24, 2015 22:16:45 GMT -5
You can see it there, ive also glued the spacers in with Ultra Black so they wont move when i go to mount the tubes.  |
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Post by Casethecorvetteman on Dec 24, 2015 23:22:33 GMT -5
Interesting refractive index info: www.engineeringtoolbox.com/refractive-index-d_1264.htmlI couldve probably got away with propylene glycol. I was waiting for the guy using the Ice Clear stuff to get back to me ages ago for a bottle of that stuff, a couple people testing it reckon it was better and had a sharper image, and wont attack the LC housings. Someone else mensioned they mixed Glycerin with the ethyl glycol and it was meant to also offer some sort of benefit, but i dont know what stuff they used or what the downsides are to mixing these liquids. |
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Post by Casethecorvetteman on Dec 25, 2015 1:21:55 GMT -5
New leads fitted:   |
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Post by Casethecorvetteman on Dec 25, 2015 1:23:07 GMT -5
Eisemann Simulation grade tube:  |
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Post by Casethecorvetteman on Dec 26, 2015 2:04:36 GMT -5
All glued in and sealed up:  |
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justin
Junior Member
Posts: 60 
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Post by justin on Dec 26, 2015 6:17:50 GMT -5
hey casey, hows it going?
did you only replace the green with a simulator grade tube? i was quoted only a few bucks difference between a sim tube and a standard lug from greg. i will have a replacement lug blue soon and considering a sim green tube. looks good. was the silicon hard to flick out?
regards,
justin.
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Post by Casethecorvetteman on Dec 26, 2015 7:17:06 GMT -5
Im good thanks mate and you?
Its not hard to remove the tubes, just cut down through the silicone all the way around the tube, and push it out from the front. Clean up the excess silicone from the housings, i put a dab of silicone on the 4 little spacers to hold them in, then run a bead around the inside of the housing, and around the outside of the tube, and drop it in. Move the tube around a bit and centre it in the housing, then push silicone down around the edges.
Fix up any scratches inside the housing or glycol with eat them. You must let the silicone cure for 24 hrs before you run your beads to mount the tubes, and id wait a few days before leak testing them. I used Permatex ULTRA BLACK, but id suggest you use something else that doesnt go off so quick.
I got a sim grade green, blue may not be worth the extra, but red and green will be.
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Post by Casethecorvetteman on Dec 26, 2015 7:43:31 GMT -5
If you have trouble or think youll have trouble, id get Greg to do it for you. He is the foremost expert.
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jenum
Junior Member
Posts: 26
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Post by jenum on Jan 10, 2016 19:29:14 GMT -5
Hi Case, I recently refilled one housing of my 909 with fresh cooling liquid. You need about 600 mL per tube. You'll end up with a little rest. For 600 mL you need 201.6 g glycerol and 488.4 g ethylene glycol. In the installation manual of the 909 is a safety data sheet. There stands it's a mix of ethylene glycol (ethan-1,2-diol) and glycerol (propan-1,2,3-triol) with specific gravity of 1,15. Temperature is unknown so I assume it's given for room temperature (20°C). Ethylene glycol density is 1.11 g/cm³ @20°C [1] and glycerol density is 1.26 g/cm³ @20°C [2]. Expect there is no volume contraction the glycerol makes about 26.67% of the density in the cooling liquid. So you get about 34 wt% of glycerol or 29 vol% of glycerol. There seems to be no additives since no other substances listed in the safety datasheet. Is there a real difference between simulation grade and normal LUGs? I only aware of Mikado Seisakusho Co. Ltd. who produce new projection tubes (including LUGs). They only have one type of LUG in their portfolie. Would be interesting if there's a relativ inexpensiv way to get a sharper image on the tube's face. My 909 has slaved more than ten thousands hour, the tubes (orginal Panasonics) also heavily used and scanlines at 1920x1080x60Hz on green/red is no problem. So I guess you don't need a blue "simulation grade" tube. regards [1] gestis-en.itrust.de/nxt/gateway.dll?f=templates$fn=default.htm$vid=gestiseng:sdbeng[2] gestis-en.itrust.de/nxt/gateway.dll?f=templates$fn=default.htm$vid=gestiseng:sdbeng [/url
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Deleted
Deleted Member
Posts: 0
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Post by Deleted on Jan 11, 2016 6:06:08 GMT -5
Yes I do have a Mikado Seisakusho Co. Ltd green tube. I also use the 70/30 ratio for ethylene glycol/glycerine(glycerol).
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Post by Casethecorvetteman on Jan 11, 2016 6:36:39 GMT -5
Thanks mate!! Great stuff  My currently fitted blue and green are up around 22,800 hours, they come from a projector that was part of a 6 unit blend, so almost no wear on blue, just a very faint line near the top, and a minor wear pattern on the green. Red mustve been swapped out, it has 14,500 hours, and no wear at all. The simulation grade tubes are apparently sharper, i havent installed them yet!! |
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