i am currently working on some new LED tail lights. I am bout to order the parts and peice it together. i will post the results... just to put things into an easy comparison. the stock 1157 bulbs burn @27watts a peice when at stop and @14watts on run (together that is 54 watts stop, 28 run). they produce 402 lumens and 38 lumens of white light a peice respectively. a red filter lets about 10-20% of that white light to pass through. that is 160 lumens at stop & 15 lumens at run(vulcan 750 has 2 1157's, this is a total -red filter loss).
your typical red led (runs at 80mA) produces about 1 lumen a peice (but this is red light, very little is lost in the red filter). I will be using a new type that produce 30-40 lumens a peice at 350 mA. I will use 9 of them. @ 4.5 watts total will power the running mode, and 11.5 watts will power the brake mode..... what i cant wait to see is the brightness. run should produce 67-90 lumens of red light compared to 15 of the 1157's and brake is a blistering 270-360 lumens compared to the 160 previously.
I will use the stock red lense that is on the tail light, and the way the led's will hit it it should look simmilar to the infinity tail lights (they use a dimmer led that produces 1-3 lumens a peice and they have 16 of them per light)
if anyone else is interested, let me know. FYI cost of parts will be about $50 for the whole thing and will out last the bike (these led will still produce 70% of the original light at 11yrs of 365 day 12 hr a day use, at 30mph that is 1.5 million miles
). I will post up the results on here....and if anyone in the dfw area has a light meter, i will be glad to meet up so we can get some actual results.
for those of you that wanna see more, here are some links
my led diagram http://pg.photos.yahoo.com/ph/krfiii...&.dnm=a028.jpg
a mock brightness view of the tail light and approx placement http://pg.photos.yahoo.com/ph/krfiii...&.dnm=5dfa.jpg
If this works out well, some Led/HID headlight or driving lights are next. I've found some promising Leds that will kick out some light. they would make some kick butt lights :P