Spacers will be for standard Convoy pill-less C8, pill version C8 is quite old.
Making only few pcs custom sized spacers and switch modules would be expensive.
I can offer custom sizes for 50+pcs interest or single customer.
SubZero FET switch in C8 tailcap:
So I finally finished C8 with 6x Samsung LH351D 90CRI and 18Amp LD-B4, and installed subZero switch.
Don't have integrating sphere, but wall bounce oh high(18A) shows ~375lux; C8 with XM-L2 shows 103lux; S2+ with Luxeon V @9A shows ~150.
So it looks like it generates ~5000-ish lumens,close to datasheet numbers. Not bad for single cell 90CRI light. Next is 6x Luxeon V @30Amp, that should be more fun, and better test for subZero switch.
So even in situations where the Omten switches are adequate (~12A for example) I assume this will be less resistance and be a measurable difference? For a VTC6 or VTC5A battery would this pull more amps than a equally bypassed Omten in that situation?
I have ignored DD-lights for years because I thought the concept was too simple with too little benefit. led4power is changing that with his high-tech approach.
@contactcr: a FET switch will definitely have a lower resistance compared to an Omten switch with bypassed springs.
It seems Omten 1288 switch has resistance of about 5-7mOhm, I will too check that with 4-wire method. Djozz also reported that resistance decreases a little bit with current, and it should be the opposite - at first look this looks like good thing, but it's not - it's a sign that metal contacts inside of switch get softer/stickier due to high temperature, so contact area increases; also high temperature helps with removal of surface impurities. But high temperature means short lifetime and questionable reliability.
Also,one important thing is that djozz tested switches with pure DC current, my intuition tells me that high current DC pulses from PWM DD drivers would be much worse due to constant current interruptions and possible arching.
Conclusion is that Omten 1288 switch, or practically any other mechanical switch of similar size is not good or reliable over 5A, yes many use it up to ~12A, but just calculated power dissipation in switch at that current (~1Watt of heat) is worrying, small plastic switch cannot dissipate that amount of power in the long term.
SubZero switch has 1~2mOhm resistance (testing in progress), and great cooling (MOSFET soldered directly to brass shell), so yes,every clicky light should benefit form that, DD driven LEDs would show higher lux/lumen readings due to larger current from battery, CC driven lights would stay in regulation for longer time, and overall light efficiency would improve.
Like most people,I would not dare to sell 12A+ light with OMTEN switch to customers, and that's the reason you don't see any 9A+ custom clicky lights for sale.
With FET switch like subZero, switch is no longer weakest point that limits power and reliability.
I installed OP refl. to C8+ without any problem. It seems fit will be fine. You only need smaller gasket, because a reflector openning hole is smaller.
Hopefully I can mod your parts for Manta Ray C8.2.
I am waiting for some parts in your shop, such as Luxeon V 90CRI, C8 Spacer, possibly fitting Momentary Tailcap-Switch and so on.
When did you think, you will get the Luxeon V 90CRI?