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fiatguy23
Joined: 20 Mar 2012 Posts: 32 Location: Australia
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Posted: Wed Apr 11, 2012 2:00 pm Post subject: Vintage Headlights |
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Hi all, Lately I've been investigating and restoring the original lighting equipment for my 1923 Fiat, and, to my amazement, they have been modified to suit different bulbs! Below is a scan from the manual showing the original style bulbs used as well as how it all comes to bits.
What they have actually done is used part of the original bulb and used it to house common single-filament bulbs, as shown below.
This is great! Except for one thing. When it is assembled in the light assembly, the bulb sticks out too far, and when it is plugged in it makes for a real dull beam from the light.
^^ (Surround has been chromed in this pic)
^^ (Thats the original lense, with its 90-year-old nickelled surface still shining well!)
The above photo shows how far it actually sticks out in the lense, this actually makes a big dark circle (blind spot) in the centre of the beam too!
I've got an idea or two on how to modify this again to make the bulb sit lower/ further back but I though it might interest a few of you out there. Just goes to show how much thought goes into something as simple as a light! |
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Phil - Nottingham
Joined: 01 Jan 2008 Posts: 1252 Location: Nottingham
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Posted: Wed Apr 11, 2012 7:12 pm Post subject: |
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My 1938 P2 has the Lucas manual focus headlamps and the bulbholder slides in or out the reflector and is reclamped to eliminate the black spot/hole. Works very well but at 36w power is somewhat feeble!
These had single filament bulb in as on DIP ithey went out and a pass (spot) lamp came on. I converted to double filament which does work reasonably well but Dazzle was never a real issue with the yellowed silver plate reflectors _________________ Rover P2
Rover P4
Rover P5 & P5B
Land Rover S2 & S3
Morris Mini Traveller Mk2 |
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Churchill Johnson
Joined: 11 Jan 2011 Posts: 359 Location: Rayleigh Essex
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Posted: Wed Apr 11, 2012 7:54 pm Post subject: |
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If those bulb's are 6v i think somewhere i have some new one's. |
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fiatguy23
Joined: 20 Mar 2012 Posts: 32 Location: Australia
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Posted: Sun Apr 22, 2012 3:13 am Post subject: |
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That would be very handy actually, quite a clever idea. I have been thinking off different ways to mount these bulbs (which are actually 12volt 18watts) and have stumbled upon a simple solution that may or may not work. It involves small diameter heater hose but I'm not too sure if it will be able to withstand the heat!
It happened to be exactly the right diameter inside and out, I'm just not sure if the temperature of the bulb will be too much for the hose to handle and result in melted rubber running down the lense... Maybe someone on here can help me out??
I would have easily machined sonething up for this if I had a lathe but of coarse, I don't! |
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P3steve
Joined: 24 Nov 2007 Posts: 542 Location: Great Yarmouth, Norfolk
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Posted: Sun Apr 22, 2012 8:26 am Post subject: |
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I wouldnt have thought that there would be enough heat to damage the hose after all they often pass over hot areas in the engine bay ok with water in them but I cant see a bulb generating that much heat, how about setting one up to be on for a few hours out of the vehicle and keep an eye on it and feel how warm its getting from time to time. _________________ If the world didn't suck we'd all fall off |
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Bitumen Boy
Joined: 26 Jan 2012 Posts: 1735 Location: Above the snow line in old Monmouthshire
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Posted: Sun Apr 22, 2012 7:57 pm Post subject: |
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If it works well, but the rubber hose doesn't last long, you could always try a bit of silicone hose - it's supposed to stand heat better than ordinary rubber, though I've never had occasion to try it myself. |
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fiatguy23
Joined: 20 Mar 2012 Posts: 32 Location: Australia
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Posted: Mon Apr 23, 2012 5:51 am Post subject: |
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Both good points there. I was actually planning to set it up inside and keep an eye on it and see how it went, I reckon it should be fine though.
I have a different setup in mind now however, I realised that the porcelane piece and its surround that puts pressure on the globe is too big to fit inside the hose I just have to rob from a modern cars tail lamp at some stage |
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