Well well well.... maybe for the next mod, I should just sit a 5w emitter on an AA bed and use that as the heatsink. /ubbthreads/images/graemlins/grin.gif /ubbthreads/images/graemlins/grin.gif /ubbthreads/images/graemlins/grin.gif
I went against suggestion and reinstalled the heatsinks on the chip and diode and then powered up the BB outside of the McModule. After ~2 minutes of run time, remember the BB only has the heatsink on it, the heatsink was boiling. It would have been easily 80C. I could just hold the touch for about 0.5 secs before having to release my finger. The bottom line.... the 5w was still lit. No blinking. No shutdown mode. I noted however that the AA (not AS) that was holding the heatsink was very very soft. In fact, after touching the copper heatsink a few times, it came off /ubbthreads/images/graemlins/ooo.gif !!!
After that happened, I thought I would bite the bullet and just pot the BB in the McModule with AA and not worry about any extra heatsinking contraptions.
Wouldn't you know it, the X3T'ed BB750 McModule works a treat! Amazing! No switching to shutdown mode after 2-3 minutes. Will run it more tomorrow night, etc..., to see if it gets too hot to handle.
I still don't know why my original version of the BB750 with heatsinking does not work.
I love this light. The X3T makes a tremendously white beam. Not white/blue or white/green. No blue rings or greenish rings. No hint of blue nor green. Just snow white! Hotbeam is a happy man /ubbthreads/images/graemlins/grin.gif
Oh, here is a pic of it.