FAQ: How can I get a BLF GT?
- Post in the main GT thread saying that you want one (or more). Then wait for a private message with further instructions. It may take a few weeks before you can make the purchase, because production is slow.
FAQ: Can I get more throw if I drive the emitter harder?
- No, not really. It’s already driven at 2.5A, which is just shy of the peak for the GT’s emitter. There’s very little to be gained from giving it more power; it’ll mostly just produce more heat.
FAQ: Why is my lux meter showing me less than 1.2 Mcd for the GT?
- Could be caused by several things…
- Lux meters usually read higher for cool white lights, so the GT’s warmer tint could be tricking the meter. This doesn’t mean it won’t throw as well as intended, just that the meter isn’t very good as measuring it.
- The beam doesn’t fully collimate until ~20+ meters, so it may be necessary to increase the distance between the light and the meter for a good measurement.
- The light might be running at 2.0A instead of 2.5A. Be sure to take measurements on turbo (which is above the normal output modes; double-click to access turbo).
FAQ: How can I mod it to increase throw?
- Try an Oslon Black Flat for maximum throw. The hotspot will be tiny though, and the driver may need to be replaced or modified (TBD).
FAQ: How can I mod it to increase lumens?
- Try a 12V XHP50, XHP50.2, XHP70, or XHP70.2. It will decrease throw though, and the driver’s sense resistor should be changed to increase power to ~5A. Bigger hotspot, more lumens, less lux. Texas_Ace tried it and says the result is nice. Using 8 cells is strongly recommended for this.
FAQ: My tailcap ring doesn’t want to spin. Help?
- There may be a pinched or insufficiently-lubed O-ring inside. If you remove the Lumintop sticker inside the tailcap, the parts should unscrew (reverse-threaded), and then you should be able to check and lube the O-rings.