SOHC.co.uk Forums > CB500/550
H4 headlight
JezzaPeach:
Hi Trig. Did this type fit?
Trigger:
Yes, that cob type fit the H4 headlight but, there are some that have a fan on the back that are too long to fit in the headlight bowl ;)
JezzaPeach:
Many thanks👍
deltarider:
--- Quote from: sye on August 14, 2020, 08:25:29 AM ---You are right of course, the power output does indeed increase with revs, sometimes to 14v. The headlamp filament is a crude affair that glows white hot by the heat created by the current passing through it. The higher the voltage, the brighter the lamp. If the voltage gets too high the lamp will blow.
--- End quote ---
Yes, but not because of a higher current which we express in A. Ever wondered why 6V cars and bikes need thicker wires?
So... the problem, the worry over possibly blowing a fuse, has now shifted to a worry over blowing a bulb? Anymore worries? Ever heard of cognitive dissonance?
--- Quote ---LED is deffinately the way to go.
--- End quote ---
But... which led then? Have you seen tests that can help you make a choice? On H4s we have seen several over the years, all carried out by consumer organisations like the ANWB and ADAC (the Dutch and German AA, resp). What offers are you prepared to make? Extra costs? A reflector that will not fit properly anymore? Irritating oncoming traffic? Being blinded by your own LED light's reflections either by road signs or in less than perfect, read hazy, atmospheric conditions? In the UK your bikes are subject to periodic tests, I believe. Any risks there?
JezzaPeach:
I think the blowing of fuses etc has been well documented in the forum, and with elderly or corroded electrics and tired batteries on bikes not used as everyday rides, makes it worth considering the options, and a useful discussion many of us can learn from.
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