I see. Do you think the current 6A driver would be fine with the emitter? Will it overdrive a single LH351D? I see that in Sofirn lights, the max current drawn by this Led is about 3-4A, which is about 1,300 lumens. Wonder if Simon has to make some new drivers just for this.
I had the same host, with bypassed springs, and LH351D with a Mtn FET. I went on walks and otherwise used it for a few months with high drain cells. No angry blue.
But, I did switch the LED out of the C8+ for a 6500K SST40. From what's being highlighted here, I'll be fine with running the LH351D at a safer amperage.
I noticed that Gearbest has some sand colored product but anything other than the two colors, I'd ask Simon about their authenticity.
For a XHP 50.2, It'll handle the heat for a little while at turbo but this having a throwy beam, you don't have to run it at turbo to light up the target really well. Go with a 3 volt emitter.
Simon please do a batch of all copper heatsinks for Z1. If performance is good users will buy so they can further tune the light. If in the future you put white flat or XHP50 in it you will want this as well.