Jay R
Flashlight Enthusiast
It seemed to me that the action of the QTC pill in the Quantum was a bit naff. Every time you use it, you are scraping away against the soft crumbly 'rubber' qtc pill with the top of the battery. This wears down the pill, you get magnetic dust inside the light and the light flickers a lot when you adjust. I decided to place a washer I had laying around which was the correct size( 5.8mm) on top of the qtc pill. To stop it from slipping out of place I placed some heat shrink tubing around the whole qtc 'bump' in the light. This is cut so that the top is fractionally higher than the whole 'bump' keeping everything in place. Because metal on metal slides easier than metal on 'rubber' the battery slides against the washer while the qtc pill is just squashed down straight. Both my Quantums now have a wonderfully smooth variable action with no flickering at all. Hope the below pictures explain it.
One of my Quantuns slowly increaded in brightness but then jumped to full. This is because the QTC was too thin or the brass ring too high and the washer was touching the ring too soon. I packed a small square of aluminium foil about 4 layers thick between the magnet and qtc to raise it up a bit to sort that out. The diagram I just did and took with my naff phone so it's not so clear...
This mod is for the version with the qtc in the head end though someting similar should work with the tail end version I guess.
One of my Quantuns slowly increaded in brightness but then jumped to full. This is because the QTC was too thin or the brass ring too high and the washer was touching the ring too soon. I packed a small square of aluminium foil about 4 layers thick between the magnet and qtc to raise it up a bit to sort that out. The diagram I just did and took with my naff phone so it's not so clear...
This mod is for the version with the qtc in the head end though someting similar should work with the tail end version I guess.
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