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<blockquote data-quote="JPardue" data-source="post: 135768" data-attributes="member: 6769"><p>The junction at the heart of an LED powerful enough to be a headlight, runs really HOT. A heat sink large enough to operate without a fan, is too large to fit in the headlamp bucket. With the headlight bucket lacking an air inlet and outlet, even a fan-cooled module overheats. </p><p></p><p>A liquid-cooled solution might work, it could carry heat out of the bucket and into the breeze. Seems complex and costly, though there are some computer components that might be slick. Even a pure mechanical solution needs to pump heat out of the bucket. Perhaps in the coming years we will see LED temperatures fall enough to make a good headlight for these tiny buckets. </p><p></p><p>For now I remain focused on building the 6VACR headlight Voltage regulators for standard bulbs, which have been available just over 3 years. Its a proven setup and it fits inside the headlight bucket. LED's are practical for the other bulbs on the bike.</p><p></p><p>Jon</p></blockquote><p></p>
[QUOTE="JPardue, post: 135768, member: 6769"] The junction at the heart of an LED powerful enough to be a headlight, runs really HOT. A heat sink large enough to operate without a fan, is too large to fit in the headlamp bucket. With the headlight bucket lacking an air inlet and outlet, even a fan-cooled module overheats. A liquid-cooled solution might work, it could carry heat out of the bucket and into the breeze. Seems complex and costly, though there are some computer components that might be slick. Even a pure mechanical solution needs to pump heat out of the bucket. Perhaps in the coming years we will see LED temperatures fall enough to make a good headlight for these tiny buckets. For now I remain focused on building the 6VACR headlight Voltage regulators for standard bulbs, which have been available just over 3 years. Its a proven setup and it fits inside the headlight bucket. LED's are practical for the other bulbs on the bike. Jon [/QUOTE]
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