BLF GT (preliminary) modding thread

DB Custom can work miracles in comparison with me, I already got the idea of sanding the centerpiece down, but it is beyond my skills to do it properly. My centerpiece would be thinner on one end and thicker on the other, apart from many other blemishes I would cause, and that would not help the focusing at all.

Hi. Is your palight boss have a ring around the hotspot?

All you have to do is put a piece of very fine grit sandpaper on a flat surface, place the black centering block on it, & rub until you remove a bit from the bottom of the block.

It should be/is very easy to do that in an even fashion. As far as causing any other blemishes, I cannot understand how that would be possible using this method.

I did it with one of mine & it was simple as well as straight forward. Seemed to tighten the hotspot a bit also.

@ johny723

Here are some links where people sanded their Centering Ring. JasonWW states he tightened his hotspot considerably.

Do some reading on either side of these linked posts & there is a bunch more info.

I cannot find the photoā€™s I mentioned by DB Custom, but I did find several by KawiBoy1428.

.

Thanks, I will read through the links.

Your welcome, my pleasure. :+1:

To make clear what I mean I took a photo of both the GT and my Boss. The first photo is the GT. It clearly is brighter, but there is a lot of light around the hotspot. IF it was possible to concentrate that light, it would improve the beam.

This is a beamshot of my Palight Boss with a dedomed XP-L V6 1A. There is very little light around the center. If only I could make my GT throw the same.

@ johny723 ā€¦ā€¦. OKā€¦ā€¦ I think I now understand what you are saying. I do not think this is possible with the GT reflector / LED setup. It was designed to spill this amount of light so as to be a more ā€œā€usefulā€ā€ light. :frowning:
This is what I remember anyway.

Thanksā€¦ i bet dedome xpl will give some green tintā€¦

I measured my friendā€™s GT too only swapping the head and his got even worse numbers than mine. The batteries were fully charged and his GT only pushed uot 894 Kcd. Mine does 980 Kcd again but interesting the different results at different distances.

Mine:
10m: 980 Kcd
15m: 969 Kcd
20m: 928 Kcd
25m: 929 Kcd

His:
10m: 894 Kcd
15m: 857 Kcd
20m: 856 Kcd
25m: 877 Kcd

I think it is mostly a focusing problem so I will try to open the head and try endermanā€™s focusing method

Let us know what the results are.

We both got our GT in early March and they travelled together according to changes in tracking had only few minutes differences between the two lights. So I think they are same manufacturing batch got not so throwy. I need to get a strap wrench or something and then try focusing.

I managed to open my GT head with a leather belt :slight_smile:
I printed out Endermanā€™s focus checking circles with the 3 square. I have still my friendā€™s GT too so I checked both. Mine was good for about 1m distance and then started to seem over focused. The 3 square moved to the center. At 7-8m the 3 squares almost completely overlapping each other. That is why I got the biggest numbers at 10m because it was focused around that distence. My friendā€™s GT was even worse. As we seen in the intensity numbers too. So I need to sand the centering plate thinner. I needed to go to work so tomorrow I will measure centering plate thickness and sand it down a little.

could you take a beamshot before and after sanding the centering plate?

you donā€™t see it on a beamshot. Maybe with the focusing templates you can see the squares but with naked eye I donā€™t think so. But I will try to make photos.

I meant a photo that compares hotspot of a stock vs sanded centerpiece

I can try but you will donā€™t see much I think. These are not huge differences just hunting for the perfection. If I can manage to focus better and make 1100 kcd from my 980 kcd it is not what you can notice in a few meter wall beamshot.

Just tell us if sanding down the centerpiece improves the hotspot at larger distances. Especially if it can remove the corona and make the center brighter.

Sure I will report results :wink:

Thanks!