SOHC.co.uk Forums > CB500/550

Maybe last opportunity to get best H4

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heli_madken:
I have only been out a couple of times on the 550 at night Ken. The majority of roads around here have no street lights and often no cats eyes. Riding my GL1000 which still has Halogen fitted (case is a little too tight to take the P43T bulbs without some work) the difference as I said is worlds apart. I think the colour of the light helps a lot as it seems to penetrate the dark better, I really cant see any difference in beam pattern and I dont seem to be upsetting other road users.

No night time rain riding as yet which was my biggest issue with the old setup so not sure what difference there will be.

Power wise I have the lights on dipped all the time now and the power system is coping without any issues, I would have 'worried' before and just used the position light during daylight.

I dont think I would go back to Halogen. I will need to alter the connectors on the GL1000 as the P43T bulbs are a little deeper and foul the casing but I will do it when I get a chance.

Bryanj:
On the "shop" GL1000 back in 75 we fitted a marchall reflector which had two seperate halogen bulbs, got overwattage bulbs from a rally shop and wired the dip to the sidelight consequently there was over 200 watts on main beam, if somebody upset you you just melted their eyeballs

Seabeowner:
Dark days (and Christmas) is coming and the price is going up.
Bulb is now £13.21 at Amazon (although they do list a slightly cheaper marketplace outlet) a 40% increase in a week.

K2-K6:
Agree with OP that they are very well made bulbs, also from using halogen lamps in highly monitored systems that Osram make comparable items.

PIAA of Japan are also technically excellent.

deltarider:
Maybe I was too pessimistic and will they remain on offer. The Osram Nightbreaker has also performed well in independent tests. Chinese products are to be avoided. Longtime agp I had an unbranded 100 Watts H4 fitted, but it performed less than a standard Narva H4. Never had a charging issue, btw. Later I realised Watts only informs you on how much energy is consumed.
Next spring I will do some tests. Amps can simply be measured as my model has a separate fuse for the headlight. Before I mount such an expensive bulb, I also want to be sure Volts at the fitting will not exceed 14,4. If too high, I could fit a diode ofcourse, to reduce the voltage somewhat.

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