Title says it all. I'm looking for smaller reflectors for the MT-G2. Preferably small enough to fit in a P60 host. Ideally ones that don't need drilling out to fit the emitter, but if it has to be done then one's that will give a reasonably clean result. I've done a fair bit of looking but can't seem to find any. Do they even exist?
Thanks,
- Matt
EDIT: I've just read that the P7 is similar in size to the MT-G2 so any reflectors that fit the P7 would likely fit the MT-G2. Is this the case? I might have to find and order some to see...
I haven’t seen any MT-G2 specific reflectors for P60 drop-ins and I suspect there wouldn’t be much of market for them because with such a small reflector you’ve got little chance of anything other than a massive flood beam. Also P60 drop-ins are not known for offering good head sinking so you’d have a problem dealing with the heat that an MT-G2 driven properly would produce.
If you really want to go this way, they used to make P7 based P60 drop-ins… an MT-G2 should fit most reflectors designed for P7 emitters.
The best one I found was an old leftover, didn't need reaming and it was OP. I'm pretty sure it was for the P7 like in that KD link but can't say for sure. MTG2 doesn't even work very well in the much bigger C8 reflectors - the center spot is lumpy, very ugly on a white wall but not noticeable outdoors. And I don't have any OP C8 reflectors, that might be the solution but I'm generally opposed to OP reflectors just on moral grounds. :)
kwarwick, P60s can handle heat fine, just not in stock form. Once the pill/reflector is in good contact with the head it works as well as any other light of similar size.
Ah thanks for the link. I was wondering if the Ledil Boom reflectors (for the likes of MCE, P7s etc) would be suitable? I might get a few and see how they perform. I'd imagine they will be very floody, which is actually OK by me. Also no OP hating over here ;)
Honestly - thought about it. To get it shiny enough it'd have to be made of aluminum and then highly polished. Not hard, but it introduces heat concerns. Silver plated copper would be shiny, but would eventually tarnish. Nickle plated copper is a possibility. It's all research at this point. Just trying to find a project that actually interests me!
I found a P7 reflector that worked surprisingly well in this MT-G2 bike light build. Reflector was a 35mm one that came from an old “Aurora” P7 1x18650 flashlight, so unfortunately probably impossible to buy now: 35mm Easy2Led build | Page 2 | Mountain Bike Reviews Forum
I forgot all about these - http://www.fasttech.com/products/1208505
They work GREAT with the MTG2. Much better than any of the C8 reflectors. I believe you could even shorten it at the front to get the OD down to P60 size. It'd be worth the work.
Depends on the diameter more than the depth. Any P60 sized reflector is going to be a flooder. The spot does not seem to get focused and start to tighten until you get past the 60mm diameter range. Be just about as good to just make it a mule and use the space where the reflector was, for a large heat sink.
+1, it just seems that with a reflector that small relative to the die size the beam pattern wouldn’t be that much different than the normal spacial distribution pattern with the light that is captured coming from the weakest part of that distribution. I don’t think it’s worthless but doubt that a hotspot is achievable. Shear output would be great so why not? It might also be worth considering going in the other direction and finding a nice beam scattering (think candelabra) shape for lanterns or even decorative lighting.
Not arguing that #8 isn’t good, just debating how good it would be after losing 1/4 of its diameter and maybe 1/3 of its depth from the most efficient part of the reflector. I’m not at all saying “don’t do it”, quite the contrary. Just be prepared for a substantial change in the pattern. Using a P7 p60 or widening the emitter opening of an XML p60 might end up just as good and far easier to do in the end than trimming 10mm off the OD of a 37mm reflector. I encourage doing both to find out for sure, though.
Reaming out a normal P60 definitely doesn't work. Or, it 'works' in that it fits and light comes out the right end, but it's not very nice.
I'm just saying that it can't be due to the reflector's overall size, if there's one under some arbitrary number that does work well. And I do have some of these that have been turned down and shortened at the front (though not quite all the way down to P60-size though), and all it does is increase the outer spill diameter, it doesn't affect the center spot.
The reading I’ve been doing from the “so called” experts say that the hot spot comes from the upper/outer reflector while the spill comes from the lower/inside area closest to the emitter. So, if they’re right, taking off the top should affect the hot spot more than the spill, instead of the other way around.
Seems to me that it has to be in the original recipe, or it just doesn’t work right. Like leaving an egg out of a chocolate cake as you mix it up, can’t add that egg after the cake’s baked, that would really suck.
The little game to play where you block the middle of the lens and the spot shows clearly from the upper/outer reflector vs blocking the outer part of the lens and all you get is flood. What’s that about?
