8mm Forum: Blackpool Dealer List & Agenda

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Posted by Andrew Woodcock (Member # 3260) on November 13, 2016, 05:09 PM:

Mr David Guest, organizer of the forthcoming Blackpool Film Convention next weekend, requested these photo's of information surrounding the event, be posted here.

So here they are, hope these help and are of interest to all those attending next weekend. [Smile]

That's a bit more like it! [Big Grin]

Posted by David Guest (Member # 2791) on November 13, 2016, 05:41 PM:

thanks Andrew well done

Posted by Andrew Woodcock (Member # 3260) on November 13, 2016, 05:48 PM:

[Smile]

Posted by Paul Adsett (Member # 25) on November 13, 2016, 08:43 PM:

Wow, what a fabulous looking program and venue! Can't wait to see some pics and video.
What is a 'High Intensity Discharge' lamp? Is it the same as an HTI lamp, as used on John Clancy's GS1200?

Posted by Bill Parsons (Member # 244) on November 14, 2016, 02:09 AM:

I can answer your query there Paul, as I personally modified both projectors in question, John Clancy’s projector has a brighter 250W lamp, (Osram HTI 250) Bobs machine mentioned on the Blackpool info uses a Xenpow HID150, (150w) a very useful lamp as it will fit in a standard projector lamp holder, and has a very good light output, both lamps require a special power supply.
Full spec on these lamps can be found on Google.

Posted by Andrew Woodcock (Member # 3260) on November 14, 2016, 02:48 AM:

Bill, on of a scale of 0-100% in terms of Brightness and whiteness, please could you rate the following for me...

1/ Osram Xenophot 15v 150w standard halogen lamp
2/ Xenpow Osram 150w H.I.D. lamp
3/ H.T.I. Osram 250w lamp

Many thanks in advance Bill. 😊

No rush whatsoever Bill in replying to any of this my friend, whilever you are busy! 😊😊

[ November 14, 2016, 07:20 AM: Message edited by: Andrew Woodcock ]

Posted by Bill Parsons (Member # 244) on November 14, 2016, 09:39 AM:

Not easy to put a figure on it Andrew, the HTI and HID lamps give a much whiter light which adds to the brighter effect on screen, it must be double the light of a 150watt halogen lamp, what I will do when I do my next HID mod is to take readings with a light meter, I know a lot of people have carried out the HID mod, at least here in the UK, maybe someone has already done this test with a meter.

Posted by Andrew Woodcock (Member # 3260) on November 14, 2016, 09:48 AM:

Thanks Bill.

I look forward to hearing back from anyone who has! 😊😊

Posted by Del Phillipson (Member # 513) on November 14, 2016, 10:27 AM:

interesting, just as I was in panic mode about getting more lamps for the GS, all sounds great for the future of film collecting.

Great looking presentation for Sunday, can't wait, the last 28 mins of Where Eagles Dare sounds brilliant.

Posted by Simon McConway (Member # 219) on November 15, 2016, 05:21 AM:

Bill is the very best at projector repairs and modifications. I trust my Elmo machines to nobody else except Bill; I do no adjustments at all, leaving it all to Bill, except cleaning the gate! This has meant that I have an exceptionally reliable set of Elmo projectors.

On Friday, at Blackpool, you will be able to see how the HID 150 lamp performs with 16mm. There will be converted Elf & Bell and Howell projectors, so across the whole weekend you'll be able to see for yourself how these lamps perform across gauges & machines.

Posted by Andrew Woodcock (Member # 3260) on November 15, 2016, 11:53 AM:

Strong words of wisdom there Simon except to say, Bill is someone I speak to fairly regularly myself.
He is already encouraging individuals to learn a little more about their particular machines as Bill will inevitably take on less and less workload as time passes by.

It is for all to learn much much more about their own individual machines to stand any chance of maintaining what you currently have in terms of performance and service levels.

Posted by Rob Young. (Member # 131) on November 15, 2016, 12:28 PM:

Would be interesting to know the measured colour temperature in Kelvin of these various lamps.

Posted by Andrew Woodcock (Member # 3260) on November 15, 2016, 12:59 PM:

White im informed Rob...very very white! 😆😆

(H.I D. And of course the scorcher of them all...the HTI)

Posted by Del Phillipson (Member # 513) on November 15, 2016, 01:08 PM:

they do sound like the Garlic Bread of projector lamps, 750 hours lifespan WOW.

Posted by Paul Browning (Member # 2715) on November 15, 2016, 03:47 PM:

To answer Andrews question on here, in my measurements, with the gs and beaulieu projectors, a standard hid lamp is as bright as the gs, almost the same figure with my light meter, in a like for like at the screen measurement, but the hid lamp was blue white, the gs lamp 200w looked less white more straw light orange, because of the kelvin colour rating difference. The beaulieu was brighter by a considerable amount in numbers, I say this because to my eyes it did not look any brighter. The colour was not as white though as the hid lamp. These are not bills hid lamp or power supply design, or as bright, but you would need a separate supply, but you may be able to run this off the gs or any other projector transformer, I would need to speak to bill about this maybe, but I know how busy he is, so its little project I have been looking at that would not cost a fortune either to convert in parts. This gets me back to a much earlier request for blown ESC LAMPS for this project, which only one person responded to on the other side. I'm not sure what the gs owners do with there blown lamps, have you found a use for them when they expire ?.

Posted by Andrew Woodcock (Member # 3260) on November 15, 2016, 08:38 PM:

The ones I was referring to Paul were those with a seperate power supply in the form of a ballast.
Working then, very much as a video projector does where it takes some time to obtain full brightness levels.

Downside then being of course, this is far less than an ideal arrangement for cine projectors.
Especially when showing 200ft shorts! 😅😅

Posted by Paul Browning (Member # 2715) on November 16, 2016, 01:18 AM:

This is the same principal Andrew, just the lamp is not quite the same design, but still use's a ballast to ignite the lamp and there is a small pause to get it to brightness. The whole kit would cost less than one of those lamps cost, with some tinkering you could use the existing transformer to drive it, you may even be able to house it within the body of the projector, I haven't quite got that far yet though.

Posted by Andrew Woodcock (Member # 3260) on November 16, 2016, 01:23 AM:

Sounds interesting Paul, and for exhibition purposes one day maybe, I'd like to convert one of my own machines to these H.I.D lamps with a separate ballast, but certainly for my home viewing purposes the model I have with the standard Xenophot lamp and a moveable shutter, is more than bright enough already, so it would never be this machine I'd convert.

Posted by Paul Browning (Member # 2715) on November 16, 2016, 04:01 AM:

Like the soap powder, its gets your whites whiter !!!!. The beaulieu is brighter than the equivalent GS, but the these new xenon gas discharge lamps are something else man, you see a different colour film when watched with these lamps.

Posted by Andrew Woodcock (Member # 3260) on November 16, 2016, 04:30 AM:

I'm sure I would enjoy the effect and I have also now a standard machine (twin track), with the standard 3 blade shutter, so this one would certainly benefit over time so long as I didn't have to fit any extra noisy cooling fans.

Two small computer fans exhausting some of that hot air travelling vertical could easily be incorporated into the lamphouse where the easily removed dual louvred vents currently are situated.

If this could work out ok, then with a separate ballast in a plinth built so the machine could sit on top of it like the HTI does, then it would be a goer for me. [Smile]

Perhaps a powerful 1U digital amp could easily be incorporated into the ballast plinth also, for exhibition hall usage?

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