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Topic: Chinese Portable 35mm Projector Model 103-A conversion from halogen lamp to HMI  (Read 2945 times)
xelablan
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« on: July 26, 2010, 01:50:34 PM »

Hi: I´ve converted my Chinese 35mm Portable Projector, Model 103-A from EDV 36 volts 400 watts halogen lamp to HMI 575W arc bulb.
This was the original lamp.


Uploaded with ImageShack.us
As you can see, once dissasembled, there was much room into the lamphouse for conversions.


Uploaded with ImageShack.us


Uploaded with ImageShack.us


Uploaded with ImageShack.us

You can see pics here:
http://tornemi.8.forumer.com/viewtopic.php?t=4535
« Last Edit: July 26, 2010, 06:33:27 PM by xelablan » Logged
Xenon
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« Reply #1 on: July 26, 2010, 07:27:48 PM »

Hi

Nice projector!

Do you also have pictures from after the conversion, with the new lamp in place?
Did you buy the projector new or used?
Wasn't the old lamp system satisfactory?
I don't know the HMI lamp what does it look like and does it need a rectifier?

Xenon
« Last Edit: July 26, 2010, 07:29:55 PM by Xenon » Logged
xelablan
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« Reply #2 on: July 27, 2010, 10:45:02 AM »

Hi: The link I posted is to a Spanish Forum where there are a lot of pics after the conversion.
I bought the projector to Martin Daian from Uruguay. He told the projector was unused.
The original lamp system was not satisfactory for me. This projector, due to the barrel shutter type and larger distances from lamp to aperture plate, losses light compared to others with the same type of lamp, so you need xenon or similar. The HMI 575W arc lamp looks like a xenon bulb but it´s a metal halide lamp. It works, not with DC like xenon, but with square wave, not senoidal, AC and needs an electronic ballast to avoid flicker on screen. After been rectified, the wave is converted to square one at higher fecuency. The electronic ballast is a bit more electronically complicated than a xenon rectifier but it´s smaller and lighter for the same wattage. The colour temperature is the same as xenon, over 6500ºK, but light output is higher than xenon as it gives more lumens per watt.


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Alex
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Xenon
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« Reply #3 on: July 27, 2010, 06:46:54 PM »

Hi,

I saw your post on the Spanish forum, are you Spanish? Do you know in that case our other Spanish member Yuri Aguilar?
He has his own filmmuseum in Spain.
I know the type of lamp you're using in your projector it is a bit like the HTI lamp I have in my BAUER P8 T400 projector it too runs on a square wave at 55 volt but has 400 watts.
I was meaning to use a HTI lamp for my 35mm projector but I was told that the colour of the light though good for 16mm was not suited for 35mm.
So I've built a complete lamphouse with a 500 watt Xenon into my projector with excellent result!

picture of the lamphouse.


I had to saw a hole in the back of the projector in order to be able to fit it.

I am very pleased with the result.
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xelablan
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« Reply #4 on: July 28, 2010, 08:32:03 AM »

Hi: Very nice lamphouse! Which is your projector? I´d like to see some pics of your machine with the lamphouse attached to and the rectifier too. I´m restoring and rebuilding a Marin MP-30 35mm portable projector. I´m going to use a canibalized Elmo 550 watts Xenon Slide projector and I want to use its rectifier as a base for the film projector, in the same way as the Bauer P8 T400. I´m in the stage of repainting the projector now, so I´ll post pictures soon.
You can use the HTI 400W/24 lamp used in the Bauer 16mm. projector for a 35mm. machine. The colour temperature is OK, about 6500ºK, but you´ll have to use condenser lens to fill the greater aperture of the 35mm. projector and you´ll get nearly as light as a 1600 watts Xenon bulb. You can use the 250 and 500 hours bulbs, but not the 750 hours lamp, as it lacks the red colour.
Of course, I know Yuri Aguilar by eMail.
Where do you live in The Nederlands? I´ve got dutch family in Den Haag. Perhaps the next time I´ll go there we could meet. Some years ago, I bought a Bauer P8 T400 16mm. projector at Mudde Films in Den Haag.
In the old forum, you posted some pics of your projection room. Could you attached them again?
Wait for your news.
Alex
« Last Edit: July 28, 2010, 08:37:41 AM by xelablan » Logged
Xenon
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« Reply #5 on: July 28, 2010, 03:49:45 PM »

Hi Alex,

Yes I had posted pictures of my projector on the old forum but they disappeared when the old forum was hacked.
My Bauer P8 T400 comes from mr.Mudde too ( he's still alive).
I live in Rotterdam so that is only 20 km. from Den Haag.
I have a MEO 5XB projector which is Czech made.
When I bought it it came from an institution in Berlin,Germany and had only few hours on the counter but was converted by tho old owners to Halogen 36 v. 400 watt.
I didn't like the colour of that light and decided to convert back to xenon but only 500 watt.
A good friend of mine found on a execution sale a small lamphouse and a small rectifier ( Schrieber X 30) for 30 amp.
Since the lamphouse had all fixings needed I  decided to build it complete into my projector, but it was a tight fit.
I had to saw a big hole in the back of the projector to fit the lamphouse.
Because the lamphouse I used had a small mirror ( for 16mm) I had to add a fieldlens to spread the beams to make them fit the 35mm format.
I'll send pictures in the next reply.
« Last Edit: July 28, 2010, 04:43:37 PM by Xenon » Logged
Xenon
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« Reply #6 on: July 28, 2010, 03:57:12 PM »

Hi again,
Here are the pictures.

The hole in the back of my projector


The lamphouse mounted


The black object is the fieldlens


This is the cover I made for the rear of the lamphouse
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Xenon
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« Reply #7 on: July 28, 2010, 04:07:52 PM »

Here are some pictures of my set-up.

Rectifier Schrieber X30 ( max 36 amp)


DTS reader


"Soundrack"


Me at the "soundrack"


A friend visiting the "Booth"
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xelablan
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« Reply #8 on: July 28, 2010, 04:34:10 PM »

Hi: It´s a very profesionally made lamphouse cover. It seems made on Meopta Factory. This is a link to the Spanish Forum with pics of a Spanish made Marin MP-30 35mm. portable projector. Italian factory Fumeo also traded with the same projector with only a few aesthetic changes. It´s not my projector, but I´ll post pics of mine soon when I´ll get it repainted. There are pics too of the Elmo Xenon slide projector´s lamphouse that I´m going to use.
http://tornemi.8.forumer.com/viewtopic.php?t=4465
http://tornemi.8.forumer.com/viewtopic.php?t=4465&postdays=0&postorder=asc&start=45
http://tornemi.8.forumer.com/viewtopic.php?t=4498
Hear you soon.
Alex
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Xenon
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« Reply #9 on: July 28, 2010, 04:40:00 PM »

Hi again,

Here the boothdoors are folded open to give easy access to the projector it's on wheels so it can be wheeled out!


Here the doors are closed


Me threading the projector


Close up of the MEO 5XB


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xelablan
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« Reply #10 on: July 28, 2010, 04:48:43 PM »

These are pics of the lamphouse cover.


Uploaded with ImageShack.us


Uploaded with ImageShack.us


Uploaded with ImageShack.us
This is a link to an auction on Ebay USA wheré there is an Elmo Xenon Slide projector like the one I´m going to use. I got it without the slide projector, only the bas box where the rectifier is and the lamphouseover the base. I´ll screw the 35mm. portable projector over the base and the lamphouse, once dissasembled from the base, will be placed behind the projector attached with three screws.
http://cgi.ebay.com/ELMO-FocusFree-Omnigraphic-550-Xenon-AF-Slide-Projector-/290453768537?cmd=ViewItem&pt=LH_DefaultDomain_0&hash=item43a064c959
Alex
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xelablan
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« Reply #11 on: July 28, 2010, 04:53:48 PM »

The first and only Meo projector I´ve seen on person was at Mr. Mudde shop. I´ve got a Meo´s anamorphic holder in mint condition that I bought two years ago. If you need it, we could change for some trailers on Dutch or so.
Here are some links that I think you´ll like. The first is about another portable I´ve modified, a Wassmann Köders 35. Since this post, I´ve updated the machine.
http://www.cinesonido.com/modules.php?name=Forums&file=viewtopic&t=3295&highlight=
Some little projector models.

http://www.cinesonido.com/modules.php?name=Forums&file=viewtopic&t=3492&highlight=
My modification for HTI 400W/24 lamp of a Hortson Junior Model 70 16mm. French projector with a Geneva Movement (Maltesse Cross).
http://tornemi.8.forumer.com/viewtopic.php?t=1216
http://www.cinesonido.com/modules.php?name=Forums&file=viewtopic&t=1637&highlight=
http://www.cinesonido.com/modules.php?name=Forums&file=viewtopic&t=1637&postdays=0&postorder=asc&start=12
http://www.cinesonido.com/modules.php?name=Forums&file=viewtopic&t=1637&postdays=0&postorder=asc&start=24
http://www.cinesonido.com/modules.php?name=Forums&file=viewtopic&t=672&postdays=0&postorder=asc&start=24
http://www.cinesonido.com/modules.php?name=Forums&file=viewtopic&t=672&postdays=0&postorder=asc&start=48
http://www.cinesonido.com/modules.php?name=Forums&file=viewtopic&t=672&postdays=0&postorder=asc&start=60
http://www.cinesonido.com/modules.php?name=Forums&file=viewtopic&t=1189&highlight=
http://www.cinesonido.com/modules.php?name=Forums&file=viewtopic&t=1189&postdays=0&postorder=asc&start=12
http://www.cinesonido.com/modules.php?name=Forums&file=viewtopic&t=1273&highlight=
http://www.cinesonido.com/modules.php?name=Forums&file=viewtopic&t=1259&highlight=

Alex
« Last Edit: July 28, 2010, 05:31:10 PM by xelablan » Logged
Xenon
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« Reply #12 on: July 28, 2010, 05:14:14 PM »

Hi Alex,

That's very clever of you to use the Elmo casing for you Marin.
I am sure it will look very professional once it's ready.
Please post the pictures when it's ready!
Thanks for the offer for the anamorphot bracket, but as you can see on the pictures I already have one! Roll Eyes Roll Eyes
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Yuri Aguilar
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« Reply #13 on: August 13, 2010, 09:01:08 AM »

Nice pics of your stuff, xenon! Thanks for sharing!
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Xenon
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« Reply #14 on: August 13, 2010, 11:29:46 AM »

 Grin

My pleasure Yuri.

 Roll Eyes Roll Eyes
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