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Topic: Bolex 18-5L - DIY Lamp Conversion
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Barry Fritz
Phenomenal Film Handler
Posts: 1061
From: Burnsville, MN, USA
Registered: Dec 2009
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posted September 27, 2014 07:00 PM
Anyone looking to purchase one of these fine projectors should make certain they are getting the model with the halogen bulb, unless they are as creative and handy as Janice is. This is from the Bolex collector web site:
When first introduced, the 18-5L used an incandescent 12V 75W bayonet mounted bulb. (Phillips designation 13730C 04 RT44 - also referred to as the "spaceman bulb") After approximately 1970, the projector used a halogen lamp with a built-in dichroic filter. Bolex catalogs and advertising from 1970 offered a choice between the two types, and it appears that both versions were offered for a short time. Later advertising, however, only lists the 18-5L with halogen bulb. Halogen Lamp EFN Halogen Lamp Unfortunately, the 12V 75W incandescent lamp used on earlier models was discontinued in the 1980s. The modern equivalent of the Halogen bulb is the EFN 12V/75W, and is relatively inexpensive. From what I've been told, Bolex offered a bulb adapter for the incandescent version, but I don't have any more information than that. Chambless Cine Equipment offers a conversion that allows early 18-5L projectors to accept the EFN lamp.
For a compact, no frills reliable machine (with limited reel capactiy), these machines are hard to beat.
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Will Trenfield
Jedi Master Film Handler
Posts: 506
From: Shrewsbury, Shropshire, UK
Registered: Mar 2016
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posted August 24, 2017 04:45 PM
I'm still experimenting, trying to find a cheaper alternative to the CXR lamp. I've found that a 12v 50w MR16 GU5.3 halogen bulb, as sold for household lighting, works on a Sankyo 1000 which has a 8v 50w power supply to the lamp. On some Eumig projectors such as the Mark 501, you had a choice between projecting at full or economy illumination. This was achieved, I think, by applying a reduced voltage to the lamp for the economy setting so a higher voltage bulb should work on a lower voltage supply providing it has the same wattage as the original lamp. These 12v 50w bulbs can be bought on eBay for as little as £2.35 post free and are said to last up to 5,000 hours.
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Mathew James
Jedi Master Film Handler
Posts: 740
From: Hamilton, Ontario, Canada
Registered: Dec 2014
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posted September 03, 2017 06:32 PM
Hi All,
The bracket in question Janice unfortunately I am unsure exactly what it is, i took it from my 'i may need this thing one day' drawer...if memory servers correct, it looks like i saved some parts from when i installed some blinds. The hook thing that you attach to the wall to wrap the blind pullstring around..this is what i believe this may be.
I used two pliers to bend it to follow the shape of the qlv-1
and then drilled to attached to the left over original bracket.
There is a problem however that must be mentioned before anyone wishes to proceed with this bracket.
Barry also asked me this question, so please be aware that
I cannot close the lamp cover completely. It is close, maybe out about 1/2 centimetre or so, but enough to prevent full closure. This allows some light to escape.
For us, this is still an improvement from using the expensive robot bulbs, but i think another bracket may be better in this unit. There is no room to 'shave-off' any metal from the bracket to suit unfortunately.
Lastly, I am finding that after just 1 or 2 films(400') shown, the case area gets extremely hot to me. I am used to the elmo and didn't have the original bulb working long enough to compare, but i am wondering if this may be why some people have chosen to try LED?
[ September 05, 2017, 08:20 AM: Message edited by: Mathew James ]
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Cheers,
Matt 📽
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UBBFriend: Email this page to someone!
![[Smile]](smile.gif)
If the prongs on your machine are the same size as on mine...then like I said with a little stretching and prodding you can make it fit.
![[Big Grin]](biggrin.gif)
![[Eek!]](eek.gif)
These were made for the 18-5L models. These projector were 12 volt lamp systems and the bulbs are no longer available. Hence...the conversion would use the 12v 75w EFN bulb. The EFN would not work in the 8 volt model. However...I don't see why the adapter wouldn't also work in an 8 volt system...just use the EFM bulb.![[Cool]](cool.gif)
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