P60: Difference between revisions
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[[File:P60dropin-and-strips.jpg|thumb|P60 drop-in with a UltraFire WF-502B host and aluminum strips for heatsinking]] | [[File:P60dropin-and-strips.jpg|thumb|P60 drop-in with a UltraFire WF-502B host and aluminum strips for heatsinking]] | ||
When picking out a drop-in, make sure you match up voltage requirements. For instance if you get a 3.7-4.2V drop-in, don't operate it using two CR123A batteries which would be 6V. LED drop-ins include the reflector, an LED mounted to a board and glued or epoxied to the pill, a brass (sometimes aluminum) pill, and a 17mm [[driver]]. There are is usually small spring soldered to the bottom of the driver as a contact for the positive end of the battery and a larger spring around the pill to press the drop-in against the lens of the host and keep it from rattling around. Drop-ins are available as single mode or multi-mode, though the drivers could be swapped out separately to change that (requires soldering). | When picking out a drop-in, make sure you match up voltage requirements. For instance if you get a 3.7-4.2V drop-in, don't operate it using two CR123A batteries which would be 6V. LED drop-ins include the reflector, an LED mounted to a board and glued or epoxied to the pill, a brass (sometimes aluminum) pill, and a 17mm [[driver]]. There are is usually small spring soldered to the bottom of the driver as a contact for the positive end of the battery and a larger spring around the pill to press the drop-in against the lens of the host and keep it from rattling around. Drop-ins are available as single mode or multi-mode, though the drivers could be swapped out separately to change that (requires soldering). [[Terminology#CPF|CPF]]'s [http://www.candlepowerforums.com/vb/forumdisplay.php?f=45 LED forum] has a sticky listing P60 drop-ins with a link to a list of P60 hosts. The advantage of the P60 system is that once you find a host you like, you can upgrade to a newer LED by just buying a new drop-in which will come with a reflector and driver designed for that particular LED. | ||
One problem with P60 drop-ins is they do not usually allow good heat transfer from the LED and driver to the host which can cause the LED to overheat. Some people will stuff aluminum foil around the drop-in to provide a better heat path between the drop-in and the head of the light. Aluminum strips, copper tape, or copper wire can also be used. You could use thermal compound, but this would make it much more difficult to swap drop-ins. Even with these measures in place, it may not be advisable to use higher power LED's (like the [[Cree]] MC-E or [[Luminus]] SST 50) in a P60 host. | One problem with P60 drop-ins is they do not usually allow good heat transfer from the LED and driver to the host which can cause the LED to overheat. Some people will stuff aluminum foil around the drop-in to provide a better heat path between the drop-in and the head of the light. Aluminum strips, copper tape, or copper wire can also be used. You could use thermal compound, but this would make it much more difficult to swap drop-ins. Even with these measures in place, it may not be advisable to use higher power LED's (like the [[Cree]] MC-E or [[Luminus]] SST 50) in a P60 host. | ||
Another drop-in size is D36 with a 36mm reflector. D-size [[Maglite]]s with a 52mm reflector are a common host, though some modifications may be necessary (not always as simple as dropping in a module). | |||