hi guys ,
there is lots of interesting options for headlights these days ....from the "standard" halogen ,over wattage types (old school tech) the the newer "k" temperature rated globes ,,,notably the "warm whites", right through to the "ultra blue" types and of corse the praised xenon -hid types .
often these "newer" globes have a great affect to optical clarity (or apparently so ) over standard type globes on the market..
basically these newer types of globes are mixed with different rare gasses and coated fillaments to allow a higher frequency light which is further filtered in the glass envelope to emit a different concentration of the spectum of light that it projects out of the source and to the road ..
but beware ..look for uv-stabilized types in our application of the k series of bikes ....we have a basically, artificially chromed plastic mirror to reflect the light source in the concentration that works reasonably well (aparently the hight fequencys of the ultar blue spectrum penetrate the reflector material causing accelerated aging and heating of the base materials ending in pitting and corrosion of the plastics .)...of corse after driving a car with more than double the concentration of light in the important directions we find that the lighting from our toys is somewhat lacking ...maybe .
it could be that were all getting older and our eyesight isnt as keen as when we were 20 something .
but maybe time has marched on and we refuse to put up with poor lighting ....ever ridden a 60s ducati .or a lambretta ..honestly you could concider those head lamps as candle power .
i remember my first "relay solution" . back in those days (70s) there was quite an effective difference to be acheived , meaning that there was quite some voltage drop between the ignition switch and the headlamps (around 2 volts in many cases , especially if you wired directly from the altenator to the relay). it really is quite remarkable the difference between a globe that has "halogised" (hit the knee curve of excitation ) and one that is just under that effect , both in colour and output .
these days manufacturers since the late 80s at least, have woken up to this fact and have installed in most cases a relay positioned close to the actual lights , with a good sized feed of wire to reduce these losses ,
there is all sorts of physics involved in these new design globes,including the properties of the mix of rare gasses that the coating of the element of the filament that excites into light producing energy (and heat ) and the new light filters . unfortunatly many cheepie manufacturers cant get their rare gasses purity right and early discoration of the internals of globes results.
simply, hid techknology excites more of the gasses within the envelope as to appear that the whole globe is illuminated rather than a fillament alone (as in arc type welding ). which in turn changes the reference point from which the reflector design has been created for , they often appear to be a whole reflector full of "full on" light emission and obvoiusly more light escapes to the road and everywhere else ...lol .
i have used many of these techs , many claiming to offer 50 % percent and more light output .the xennon being 300% claimed .
after playing with a few different types i have settled on the warm white -blue white ones which are claimed to output a k rating in the range of 4000- 5300 deg kelvin ...a nice white for me .which seems to work well in our aussie enviroment ....dark roads , highlighted white road markings ,edges and not much rain ...erm all the time .
i guess for many other folks driving in snow or rain these types would not be "kind" to the driver as the reflection of light back at the driver from rain and or snow would be amazingly increased.
and obviously the higher that "k" rating the effect of reflection would be more pronounced ,i guess thats why lower k temp lamps were concidered for fog applications , and why sodium vapour street lighting is a verry important road safety requirement , as yellow and colours more aproching the red scale penetrate through small reflective particles more readily .
for me, a bonus reason for selecting this type is that you can often find them "on special" woohoo .....so for me $29.00 is more than acceptable ...grin.... for 2x h4 globes that really do make a difference .
well to my eyes anyhow to me they appear to have the same power as a halogen 80-100 watt but a more perceptable bluish tinge, white light flood.... and still legal .
cant wait for single 40-50 watt led lighting to be developed and made affordable for the masses ....sweet idea ....light without so much heating affect ...amazing
but still interested to see if members have installed the hid solution and what feedback there is .