Voltage drop for LEDs?

[TheChosenJuan]

Hello
I have been lurking these forums for a while and I finally decided to build my own lightsaber.
I'm going to be building a reverse grip stunt saber that I can add sound and a crystal chamber to later. I figured out my wiring but the only problem I'm having is figuring out the resistor values. I know ohms law like the back of my hand but I can't figure this out without knowing the voltage drop for my LEDs. I want to use a Luxeon tri rebel star in green green white but I have no idea where to find that information.
Any help would be greatly appreciated.
Thanks!

[ndknoy]

http://forums.thecustomsabershop.com...other-resistor

This should be of assistance.

[Silver Serpent]

Forward voltage values for the Rebel LEDs are listed on the store page: http://www.thecustomsabershop.com/Lu...Star-P523.aspx

[daisy]

Yes, Voltage drop must be considered. Here is an article talk about power supply for led and voltage drop. The solution from parallel connection and also connect the both ends of led lights to the power supply to avoid voltage drop.