Thread: Disco II headlight globe replacement?

Tombie to separate fact from fiction do what I did, go to the Osram Germany site and look at the technical specification of the Osram H4 "Nightbreaker" and the Osram "Original Line"
The Nightbreaker 64193NBU has a stated luminous flux of 1650/1000 lumens
and the Osram "Original Line" 64193 has a luminous flux of 1650/1000 lumens.
Interestingly both are listed at an input wattage of 75/68, I assume because that is at 12V while the tested voltage is 13.2.
It has full specs on their site including standard hours life and everything else you would want to know.
I have done this exercise before and it confirms my view that only the colour is different, caused by the blue band on the bulbs.
Regards Philip A

Thanks. Hadn't looked at Osram.
Made a call and asked a question or 3.

So... Here goes the apples and oranges!

You are correct that banding the lights changes colour temperature.

It seems to "put the light" where it's wanted they use a tighter winding, and more precision located filament.

They then up the gas pressure to assist the bulb life.

By doing so the light becomes closer to a "singularity" (optimum for light generation) and then when combined with reflector and optics gives a more useable light output.

So taking the light, optimising the focal point and cutting outlying blue spectrum light (only banded each end) is how the improvement is gained.


I still stand by the correct measure of lighting - lumens, candela etc... Watts is a measure of power.

Thank you all for your thoughts and opinions. I will give these OSRAM Nightbreakers a crack and see how I go. They have got to be better than what's currently in there in any case.

Cheers!

(Tombie - would you mind replying to my private message please - Thanks!)

Well I can't tell you if upgrading the wiring helps the standard lights much.
I've added about 3 inches 4awg wire to a distribution block then 4 x 25amp (Jaycar measurement, no idea of exact mm2) to 8 relays (one each for high, low, 60w LED bar, driving light both left and right).

The light is pretty good but I'll be upgrading the IPF 900 lights to 100w HID. They are reasonable as they are but look very orange with the LEDs on the sides and +50% bulbs in the head lights.

The IPF aren't a scratch on Hella reflectors that I'm used to but I picked them up second hand $200, in very near new condition.



Happy Days.

I like the plate!