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FJR Motorcycle Forums
FJR Parts & Accessories Discussions
brake/tail light leds
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<blockquote data-quote="Fred W" data-source="post: 640662" data-attributes="member: 3828"><p>In an attempt to get some semblance of a scientific approach to this whole replacement bulb thing, I searched around to find the light output specifications for a standard incandescent 1157 bulb. According to <a href="https://www.donsbulbs.com/cgi-bin/r/b.pl/1157.html" target="_blank">this site</a> the standard bulb which has two filaments (8.3 watt and a 26.9 watt) out 37.7 lumens and 402 lumens.</p><p></p><p>The specs for the superbrightled <a href="https://www.superbrightleds.com/specs/115x-xLX3.htm" target="_blank">3 Watt Luxeon</a> says it puts out 30 & 85 lumens. Their <a href="https://www.superbrightleds.com/specs/115x-x3X1W.htm" target="_blank">4 watt High Power</a> bulbs put out a more respectable 25 & 165 in white or 35 & 140 in red. In all cases the brake light output is way down compared to the standard bulb and are not quite as bright in running light mode.</p><p></p><p>Now it may be that the lumen is not an accurate representation of how bright they are to the eye. But is seems to me that being 1/4th the light output would be a serious handicap.</p></blockquote><p></p>
[QUOTE="Fred W, post: 640662, member: 3828"] In an attempt to get some semblance of a scientific approach to this whole replacement bulb thing, I searched around to find the light output specifications for a standard incandescent 1157 bulb. According to [URL="https://www.donsbulbs.com/cgi-bin/r/b.pl/1157.html"]this site[/URL] the standard bulb which has two filaments (8.3 watt and a 26.9 watt) out 37.7 lumens and 402 lumens. The specs for the superbrightled [URL="https://www.superbrightleds.com/specs/115x-xLX3.htm"]3 Watt Luxeon[/URL] says it puts out 30 & 85 lumens. Their [URL="https://www.superbrightleds.com/specs/115x-x3X1W.htm"]4 watt High Power[/URL] bulbs put out a more respectable 25 & 165 in white or 35 & 140 in red. In all cases the brake light output is way down compared to the standard bulb and are not quite as bright in running light mode. Now it may be that the lumen is not an accurate representation of how bright they are to the eye. But is seems to me that being 1/4th the light output would be a serious handicap. [/QUOTE]
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brake/tail light leds
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