8mm Forum: Lamp needed for Bolex M8R

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Topic: Lamp needed for Bolex M8R

Chris Bird
Expert Film Handler

Posts: 218
From: Kingston upon Thames, UK
Registered: Jul 2013

posted November 02, 2014 12:30 PM

Hi All, I have a Bolex M8R but the lamp seems to have blown. It was a 110v 300w A1/198. Does anyone have a spare they can sell me? If so please pm me and let me know how much including postage (UK). Thanks hugely in advance.

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Jon Addams
Jedi Master Film Handler

Posts: 638
From: New York, NY, USA
Registered: Apr 2007

posted November 02, 2014 12:44 PM

Hello Chris,

There is a modern replacement lamp for that projector. Search for a CZX Lamp.

It's inexpensive and they are for sale on eBay.

Good luck

Jon

[ November 02, 2014, 01:48 PM: Message edited by: Jon Addams ]

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Dominique De Bast
Film God

Posts: 4486
From: Brussels, Belgium
Registered: Jun 2013

posted November 02, 2014 01:33 PM

Thanks, Jon, never thought that in the US you still made 110 volts bulbs. It is good to know if old projectors bulbs become one day too hard to fine here.

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Dominique

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Maurice Leakey
Film God

Posts: 5895
From: Bristol. United Kingdom
Registered: Oct 2007

posted November 02, 2014 02:13 PM

I thought the Bolex M8R was adjustable for UK mains direct, also that it used a 500 watt lamp. This is the A1/7.
http://www.bolexcollector.com/projectors/m8r.html

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Maurice

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Chris Bird
Expert Film Handler

Posts: 218
From: Kingston upon Thames, UK
Registered: Jul 2013

posted November 02, 2014 02:33 PM

Thanks Jon, I had no idea, but can't see a 300w version on eBay UK. Maurice - that's interesting, maybe mine came with the wrong lamp to start with. I have a 110v 500w spare for my Specto 500 - do you think I'm ok to try that? I don't want to blow a rare lamp, but as you show, that website makes me think that it's ok. Many thanks in advance, Chris

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Maurice Leakey
Film God

Posts: 5895
From: Bristol. United Kingdom
Registered: Oct 2007

posted November 02, 2014 02:39 PM

Chris
As the projector is supposed to take a 500 watt lamp, I can see no reason why you can't use your Specto lamp, I assume it's the same pre-focus type.

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Maurice

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Chris Bird
Expert Film Handler

Posts: 218
From: Kingston upon Thames, UK
Registered: Jul 2013

posted November 02, 2014 02:55 PM

Brilliant, thanks Maurice, I'll give it a try probably tomorrow night and report back.

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Maurice Leakey
Film God

Posts: 5895
From: Bristol. United Kingdom
Registered: Oct 2007

posted November 02, 2014 02:57 PM

Chris
You may find this of interest.
http://www.donsbulbs.com/cgi-bin/r/b.pl/czx-120v%7c120v%7c500w%7cp28s~ansi.html

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Maurice

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Dominique De Bast
Film God

Posts: 4486
From: Brussels, Belgium
Registered: Jun 2013

posted November 02, 2014 04:05 PM

Chris, many projectionists want the most powerfull bulb, but some like me don't. I use a 200 watts on projectors that can accept 250 and I set the main voltage on a higher stop (240 volts instead of 220 volts) to lower the lamp power. I don't need for a home projection a too high brightness and I believe (but this is a controversy among memebers of this forum) that a too hot lamp may damage a film.

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Dominique

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Jon Addams
Jedi Master Film Handler

Posts: 638
From: New York, NY, USA
Registered: Apr 2007

posted November 02, 2014 04:13 PM

This projector came with a 110V 500W lamp just like the CZX. I've been using it for years.

Jon

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Terry Sills
Phenomenal Film Handler

Posts: 1423
From: Weymouth,Dorset,England
Registered: Oct 2012

posted November 02, 2014 04:17 PM

Dom
That makes a lot of sense. It should extend the lamp life considerably and if you are only viewing for your own purpose it's not necessary to have maximum brightness. I always use the low setting on my Sankyo and Eumigs.

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Mark Todd
Film God

Posts: 3846
From: UK
Registered: Aug 2003

posted November 02, 2014 05:26 PM

Hi Chris is there a heat shield or little pane of glass or something.

Some of the old std 8 machines had a nasty of putting a lot of heat on to the std 8 film frame at 16/18 FPS and sort of lifting each frame out if you will. It looks a bit like each frame is raised a little.

The Bell and Howells with the 150 watt valve base lamp very close to the gate and no shield etc are very prone to doing that.

Best Mark.

PS when I used to run old bolex`s it heated my old terraced house sitting room nicely way back when.

Best Mark.

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Chris Bird
Expert Film Handler

Posts: 218
From: Kingston upon Thames, UK
Registered: Jul 2013

posted November 03, 2014 03:48 PM

Thanks everyone. I just tried my 110v 500v lamp and every time I try to switch the Bolex on, the mains trips out. So I fear something worse than just the lamp is the issue. Sigh. Guess I'll park the machine till next time I see my friend Martyn Stevens who has the relevant gear and expertise to trace wherever the fault is (I have neither!). Thanks so much for all your advice.

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Maurice Leakey
Film God

Posts: 5895
From: Bristol. United Kingdom
Registered: Oct 2007

posted November 04, 2014 09:09 AM

Do you mean your mains trip when:-
1) plug in
or
2) motor switched on
or
3) lamp switched on

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Maurice

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Chris Bird
Expert Film Handler

Posts: 218
From: Kingston upon Thames, UK
Registered: Jul 2013

posted November 04, 2014 12:33 PM

Good point Maurice. To my surprise it was when I switched the motor on, which is why I think it's not a good sign... Funny thing is, I have had this machine working. It ran a few reels then the lamp went mid-reel, the motor continuing. Maybe a capacitor or something like that has blown?

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Maurice Leakey
Film God

Posts: 5895
From: Bristol. United Kingdom
Registered: Oct 2007

posted November 05, 2014 02:31 AM

I regret that I do not know this projector model. Never even seen one. It's doubtful if it has a synchronous motor which needs a capacitor for starting, however, there will probably be a capacitor strapped across the motor connection for the suppression of motor sparks, etc. Radio suppression.

If it goes open-circuit there would be no obvious result, but if it's gone short circuited, there's your trouble, Tripping your cut-outs.

--------------------
Maurice

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Paul Mason
Jedi Master Film Handler

Posts: 540
From: Aldershot, Hampshire, UK
Registered: Nov 2013

posted November 05, 2014 02:58 AM

The Bolex M8 has a variable speed motor. Almost certainly a "universal" ac/dc type with carbon brushes. The Specto 500's used them and these motors need periodic attention and the electrical insulation to earth may well have failed.

[ November 05, 2014, 06:51 AM: Message edited by: Paul Mason ]

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Paul.

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Richard C Patchett
Master Film Handler

Posts: 424
From: Flint Mi 48506
Registered: Dec 2007

posted November 05, 2014 11:21 AM

Greetings
I have theses in stock
CZX DAB $36.00
Only bad part is the shipping for overseas from the USA
Priority mail is $26.00 insured
Rc

--------------------
RC’s Classic Collection
16 mm Parts & Service
Elmo, Eiki, Bell & Howell +
http://www.rcsclassic16mm.com/

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Chris Bird
Expert Film Handler

Posts: 218
From: Kingston upon Thames, UK
Registered: Jul 2013

posted November 05, 2014 02:38 PM

Yikes! Oh dear, it sounds like that machine will have to be banished to the garage pending a full enquiry. Thanks for all your help and advice.Richard - thank you, but I think I should wait till I've seen what else may be wrong with this projector.

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Richard C Patchett
Master Film Handler

Posts: 424
From: Flint Mi 48506
Registered: Dec 2007

posted November 05, 2014 04:37 PM

Greetings Chris
Please keep us informed
RC

--------------------
RC’s Classic Collection
16 mm Parts & Service
Elmo, Eiki, Bell & Howell +
http://www.rcsclassic16mm.com/

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