The beam pics below are of a Rat and PT one has a modified light assembly the other is stock. I purchased a UK SL4 eLED module and modified it with a Seoul P4 U bin LED and a GD 1000 Buck/Boost Converter board.
I first took a dermal and filed the slug and LED out of the back of the module. I then removed the LED and the battery post leaving just the copper slug. Next I attached wires to the GD 1000 and run them through the slug and attached to GD to the slug using Arctic Silver Thermal Adhesive. I then used the Arctic to attach the Seoul P4 and soldered it all up.
The new unit has about two and a half times the hot spot and appears to me about three to four times brighter, also it has a lot more spill. I am not sure of the runtime yet but with the Seoul I would think it should still be longer than stock, even being driven at one amp. This mod was a PITA but worth it as this thing is awesome! I just wish UK, PT or Salvo would do this them self, it would not cost much more to do it right.
I first took a dermal and filed the slug and LED out of the back of the module. I then removed the LED and the battery post leaving just the copper slug. Next I attached wires to the GD 1000 and run them through the slug and attached to GD to the slug using Arctic Silver Thermal Adhesive. I then used the Arctic to attach the Seoul P4 and soldered it all up.
The new unit has about two and a half times the hot spot and appears to me about three to four times brighter, also it has a lot more spill. I am not sure of the runtime yet but with the Seoul I would think it should still be longer than stock, even being driven at one amp. This mod was a PITA but worth it as this thing is awesome! I just wish UK, PT or Salvo would do this them self, it would not cost much more to do it right.
